Renesas Starter Kit for SH7124 User`s Manual
Contents
1. J 13 Pin Circuit Net Name Device Pin Circuit Net Name Device Pin Pin 1 Ground 2 5V Only 3 No Connection 4 LCD_RS 26 5 R W Wired to Write only 6 LCD E 24 7 No Connection 8 No connection 9 No Connection 10 11 LCD D4 1 12 LCD D5 9 13 LCD Dp 10 14 LCD_D7 7 Table 6 4 LCD Module Connections 6 6 Option Links Table 6 5 below describes the function of the option links contained on this CPU board The default configuration is indicated by BOLD text Option Link Settings Reference Function Fitted Alternative Removed Related To R1 Oscillator Feedback Resistor across X1 No feedback R2 Oscillator Connects X1 to Microcontroller Disconnects X1 from Microcontroller R3 4 5 R3 Oscillator Connects X1 to Microcontroller Disconnects X1 from Microcontroller R2 4 5 R4 Oscillator Connects external clock to Disconnects external clock from R2 3 5 Microcontroller Microcontroller R5 Oscillator Connects external clock to Disconnects external clock from R2 3 4 Microcontroller Microcontroller R10 Power Connect 5 to CON_5V Disconnect 5 Rll Power UC_VCC Connected Disconnect to enable Microcontroller Supply current to be measured R12 Power Connect Board_VCC to Disconnect Board VCC from CON_5V CON_5V R13 Power Connect AVCC to CON 5V Disconnect AVCC from CON BV R14 Power Connect AVSS to GND Disconnect AVSS from GND R15 Power Connect AVSS to GND2. es ADC Input IRQ pin SW2 SW3 BOOT RES O O O O e LU U KJ Potentiometer SWITCHES LEDs User 4 LEDS Power Green 1Green 1Orange 2Red Boot Orange Figure 5 1 Block Diagram Figure 5 2 shows the connections to the RSK USB Cable Host PC E10A Module l N eL o Figure 5 2 RSK Connctions Chapter 6 User Circuitry 6 1 Switches There are four switches located on the CPU board The function of each switch and its connection are shown in Table 6 1 Switch Function Microcontroller RES When pressed the CPU board microcontroller is reset RESn SW1 BOOT Connects to an IRQ input for user controls IRQ1 Pin 37 Port B pin 3 SW2 Connects to an IRQ line for user controls IRQ3 Pin 36 Port B pin 5 SW3 Connects to the ADC analogue input AN3 Pin 44 Port F pin 3 Table 6 1 Switch Functions R efer to schematic for detailed connectivity information 6 2 LEDs There are six LEDs on the CPU board The green POWER LED lights when the board is powered The orange BOOT LED indicates the device is in BOOT mode when lit The four user LEDs are connected to an IO portand will light when their corresponding port pin is set low Table 6 2 below shows the LED pin references and their corresponding microcontroller port pin connections LED Reference As Microcontroller Port Pin Microcontroller Pin P
3. hereby under any patents copyrights or other intellectual property rights of Renesas Electronics or others You should not alter modify copy or otherwise misappropriate any Renesas Electronics product whether in whole or in part Descriptions of circuits software and other related information in this document are provided only to illustrate the operation of semiconductor products and application examples You are fully responsible for the incorporation of these circuits software and information in the design of your equipment Renesas Electronics assumes no responsibility for any losses incurred by you or third parties arising from the use of these circuits software or information When exporting the products or technology described in this document you should comply with the applicable export control laws and regulations and follow the procedures required by such laws and regulations You should not use Renesas Electronics products or the technology described in this document for any purpose relating to military applications or use by the military including but not limited to the development of weapons of mass destruction Renesas Electronics products and technology may not be used for or incorporated into any products or systems whose manufacture use or sale is prohibited under any applicable domestic or foreign laws or regulations Renesas Electronics has used reasonable care in preparing the information included in this document but Re
4. 9 Board Interface interface to PA 7 interface R61 Application Connect TMR1 of application Disconnect TM R of application board R62 Board Interface board interface to PE 0 interface R62 Application ConnectlO 4 of application board DisconnectlO 4 of application board R61 Board Interface interface to PE 0 interface R63 Application Connect TRIGb of application Disconnect TRIGb of application board R64 Board Interface board interface to PE 2 interface R64 Application ConnectlO 6 of application board Disconnect 10_6 of application board R63 Board Interface interface to PE 2 interface R65 Application Connect MO UD of application Disconnect MO_UD of application board R66 Board Interface board interface to PB 1 interface R66 Application Connect TRISTn of application Disconnect TRISTn of application R65 Board Interface board interface to PB 1 board interface R68 LCD module Connect LCD E of application Disconnect LCD E board interface to PA 1 R69 LCD module Connect LCD D5 of application Disconnect LCD D5 board interface to PE 9 Table 6 5 Option Links 6 7 Oscillator Sources A crystal oscillator is fitted on the CPU board and used to supply the main clock input to the Renesas microcontroller Table 6 details the oscillators that are fitted and alternative footprints provided on this CPU board Component Value Package Manufacturer Crystal X1 Fitted 10Mh
5. Disconnect AVSS from GND R47 RS232 Serial Shutdown RS232 Transceiver Do not shutdown RS 232 Transceiver R48 RS232 Serial Connect TTX to RS232 Serial port Only E8 connected R49 Option Link Settings Reference Function Fitted Alternative Removed Related To R49 RS232 Serial Connect TRX to RS232 Serial Only E8a connected R48 port R50 E 8a not E8a enabled E8a disabled Supplied R51 E8a E8a connected to FWE E8a not connected to FWE R54 Application Connect SClaTX of application DisconnectSClaTX of application board R55 Board Interface board interface to PA_9 interface R55 Application Connect TDO of application board Disconnect TDO of application board R54 Board Interface interface to PA 9 interface R56 Application Connect SClaRX of application DisconnectSClaRX of application board R57 Board Interface board interface to PA 8 interface R57 Application Connect TDI of application board Disconnect TDI of application board R56 Board Interface interface to PA 8 interface R58 Application Connect SClaCK of application DisconnectSClaCK of application board R59 60 Board Interface board interface to PA 7 interface R59 Application ConnectlO 3 of application board DisconnectlO 3 of application board R58 60 Board Interface interface to PA_7 interface R60 Application Connect TCK of application board Disconnect TCK of application board R58 5
6. To our customers Old Company Name in Catalogs and Other Documents On April 1 2010 NEC Electronics Corporation merged with Renesas Technology Corporation and Renesas Electronics Corporation took over all the business of both companies Therefore although the old company name remains in this document it is a valid Renesas Electronics document We appreciate your understanding Renesas Electronics website http www renesas com April 1 2010 Renesas Electronics Corporation Issued by Renesas Electronics Corporation http www renesas com Send any inquiries to http www renesas com inquiry ENESAS 8 10 11 12 Notice All information included in this document is current as of the date this document is issued Such information however is subject to change without any prior notice Before purchasing or using any Renesas Electronics products listed herein please confirm the latest product information with a Renesas Electronics sales office Also please pay regular and careful attention to additional and different information to be disclosed by Renesas Electronics such as that disclosed through our website Renesas Electronics does not assume any liability for infringement of patents copyrights or other intellectual property rights of third parties by or arising from the use of Renesas Electronics products or technical information described in this document No license express implied or otherwise is granted
7. a a ie dl ti Chapter Modest AMON A o ureo ela eda 12 Td BOOM sok eraan oft hata A E agra komik lga o tet sah att he muka ka EAEE 12 Tet User Mode sa Er EN E VK AI rr Se Ae aedo Si ee 12 Chapter 8 Programming Methods cccccceesceceeeeceeeeeaaeeeeneeeceaeeeeaaesaneecaaeeseaaesseaeeseaeeesaaesseaaeessaeeesaeseeaaeenenees 13 A NN 13 Chapter 9 ae sra ocio eae dd 14 9 1 Microcontroller Headers asinan cerca 14 9 2 Application e TT 15 Chapter 10 Code Development sese sese ee ee eee 17 TOM e Ta 17 10 2 Compiler ESTICIONS iii dr ean in ee i aed OVA GA ae cea bad 17 10 3 Breakpoint Supports ssp HHT 17 L MEN Map TTT 18 Chapter 11 Component PIacement eee ee ee ee eee ee eee eee eee 19 Chapter 12 Additional lnformation sss sese eee ee eee 20 Chapter 1 Preface Cautions This document may be wholly or partially subject to change without notice All rights reserved No one is permitted to reproduce or duplicate in any form a part or this entire document without the written permission of Renesas Technology Europe Limited Trademarks All brand or product names used in this manual are trademarks or registered trademarks of their respective companies or organisations Copyright Renesas Technology Europe Ltd 2008 All rights reserved Renesas Technology Corporation 2008 All rights reserved Renesas Solutions Corporation 2008 All rights reserved Website http www renesas com Glossary ADC Analog to Dig
8. ain use conditions Further Renesas Electronics products are not subject to radiation resistance design Please be sure to implement safety measures to guard them against the possibility of physical injury and injury or damage caused by fire in the event of the failure of a Renesas Electronics product such as safety design for hardware and software including but not limited to redundancy fire control and malfunction prevention appropriate treatment for aging degradation or any other appropriate measures Because the evaluation of microcomputer software alone is very difficult please evaluate the safety of the final products or system manufactured by you Please contact a Renesas Electronics sales office for details as to environmental matters such as the environmental compatibility of each Renesas Electronics product Please use Renesas Electronics products in compliance with all applicable laws and regulations that regulate the inclusion or use of controlled substances including without limitation the EU RoHS Directive Renesas Electronics assumes no liability for damages or losses occurring as a result of your noncompliance with applicable laws and regulations This document may not be reproduced or duplicated in any form in whole or in part without prior written consent of Renesas Electronics Please contact a Renesas Electronics sales office if you have any questions regarding the information contained in this document or Renesas Electronic
9. d has the Release or stand alone code from the example tutorial code pre programmed into the Renesas microcontroller On powering up the board the user LEDs will start to flash Switch 2 will cause the LEDs to flash at a rate controlled by the potentiometer Chapter 4 Board Layout 4 1 Component Layout The following diagram shows top layer component layout of the board Application Board Interface Reset Switch RS232 Serial Power Power LED A User LED ser O e O E10A Header a soe LED User Boot Switch User Switches Microcontroller Pin Headers J1 to J4 Application Board Interface Potentiometer Figure 4 1 Board Layout 4 2 Board Dimensions The following diagram gives the board dimensions and connector positions All through hole connectors are on a common 0 1 grid for easy interfacing WWQ0 S WUW 8 E 45 00mm ww LL 206 w WQ0 001 LLUOO 98 JA2 Figure 4 2 Board Dimensions Chapter 5 Block Diagram Figure 5 1 shows the CPU board components and their connectivity Power Jack Option Application Board Headers Microcontroller Pin Boot mode pins Boot Circuitry Headers Microcontroller Debug Header Option RESET pin RESn D type latch BOOT 8 BOOTn signals Serial Connector Option Me oh
10. ed to program the Renesas microcontroller with program code via the SCI1 interface Further details of programming the flash are available in the SH7124 device hardware manual The CPU board provides the capability of changing between User and Boot User Boot modes using a simple latch circuit This is only to provide a simple mode control on this board when the E10A debugger is notin use To manually enter boot mode press and hold the SW1 BOOT The mode pins are held in their boot states while reset is pressed and released Release the boot button The BOOT LED will be illuminated to indicate that the microcontroller is in boot mode More information on the operating modes can be found in the device hardware manual 7 1 1 Boot mode The boot mode settings for this CPU board are shown in Table 7 1 below FWE MD1 LSI State after Reset End 1 0 Boot Mode Table 7 1 Mode pin settings 7 1 2 User Mode This is the default mode of SH7124 Following table details the mode pin settings for the user mode FWE MD1 LSI State after Reset End 0 1 User Mode Table 7 2 Mode pin settings Chapter 8 Programming Methods The board is intended for use with HEW and the supplied E10A debugger only Please refer to SH7124 Group Hardware Manual for details of the programming methods using on chip serial port SCI1 and without using E10A debugger 8 1 E10A Header The E10A provides additional debu
11. ernal Clock Input CON_EXTAL 30 3 Open drain NMI 32 4 Regulated Supply 1 Vssl 6 5 Open drain output WDTOVF 28 6 Serial Port SClaTX 16 1 Open drain WUP NC 8 Serial Port SClaRX 18 9 Open drain IRQ1 37 10 Serial Port SClaCK 20 11 Up down MO UD 38 12 Serial Port Handshake NC 13 Motor control MO Up 9 14 Motor control MO Un 1 15 Motor control MO Vp 5 16 Motor control MO Vn 2 17 Motor control MO Wp 3 18 Motor control MO Wn 1 19 Output TMRO 11 20 Output TMR1 15 21 Input TRIGa 10 22 Input TRIGb 13 23 Open drain NC 24 Tristate Control TRISTn 38 25 PF6 41 26 PF7 40 Table 9 6 J A2 Standard Generic Header Chapter 10 Code Development 10 1 Overview Note For all code debugging using Renesas software tools the CPU board must either be connected to a PC serial port via a serial cable ora PC USB port via an E10A An E10A is supplied with the RSK product Due to the continuous process of improvements undertaken by Renesas the user is recommended to review the information provided on the Renesas website at www renesas com to check for the latest updates to the Compiler and Debugger manuals 10 2 Compiler Restrictions The compiler supplied with this RSK is fully functional for a period of 60 days from first use After the first 60 days of use have expired the compiler will default to a maximum of 256k code and data To use the compiler with programs greater than this size you will need
12. gging features including hardware breakpoints and hardware trace capability Modifications to support E10A Debugger on old RSKSH7124 boards J9 Fit J11 Fit connect jumper between pins 2 8 3 R51 Remove R54 Remove R55 Fit OR Resistor R56 Remove R57 Fit OR Resistor R58 Remove R59 Do not fit R60 Fit OR Resistor Table 8 1 E10A connections Chapter 9 Headers 9 1 Microcontroller Headers Table 9 1 to Table 9 4 show the microcontroller pin headers and their corresponding microcontroller connections The header pins connect directly to the microcontroller pin unless otherwise stated J1 Pin Circuit Net Name Device Pin Circuit Net Name Device Pin Pin 1 MO Wn 1 2 MO Vp 2 3 MO Wp 3 4 UC VCC 4 17 5 MO_Vp 5 6 Ground 6 19 7 MO Un 7 8 INC 9 MO_Up 9 10 TRIGa 10 11 TMRO 11 12 107 12 Table 9 1 J 1 J2 Pin Circuit Net Name Device Pin Circuit Net Name Device Pin Pin 1 TRIGD IO 6 13 2 10 5 14 3 TMR1 10_4 15 4 SClaTx TDO 16 5 UC_VCC 4 17 6 SClaRx TDI 18 7 Ground 6 19 8 SClaCK IO_3 TCK 20 9 10 2 21 10 E8 TTX TMS 22 11 E8 TRX TRST 23 12 101 24 Table 9 2 J 2 33 Pin Circuit Net Name Device Pin Circuit Net Name Device Pin Pin 1 NC 2 10_0 26 3 RESn 27 4 WDTOVF 28 5 CON_XTAL via R5 when fitted 29 6 CON_EXTAL
13. ital Converter USB Universal Serial Bus CPU Central Processing Unit DAC Digital to Analog Converter DMA Direct Memory Access E10A E10A for Starter Kit debugger FDT Flash Development Tool RSK Renesas Starter Kit LED Light Emitting Diode LCD Liquid Crystal Display Chapter 2 Purpose This RSK is an evaluation tool for Renesas microcontrollers Features include e Renesas Microcontroller Programming e User Code Debugging e User Circuitry such as switches LEDs and potentiometer s e Sample Application e Sample peripheral device initialisation code The CPU board contains all the circuitry required for microcontroller operation This manual describes the technical details of the RSK hardware The Quick Start Guide and Tutorial Manual provide details of the software installation and debugging environment Chapter 3 Power Supply 3 1 Requirements This CPU board operates from a 5V power supply and are supplied with a suitable PSU A diode provides reverse polarity protection only if a current limiting power supply is used All CPU boards are supplied with an E10A debugger When the CPU board is connected to another system that system should supply power to the CPU board All CPU boards have an centre positive supply connector using a 2 0mm barrel power jack Warning The CPU board is neither under not over voltage protected Use a centre positive supply for this board 3 2 Power Up Behaviour When the RSK is purchased the CPU boar
14. nesas Electronics does not warrant that such information is error free Renesas Electronics assumes no liability whatsoever for any damages incurred by you resulting from errors in or omissions from the information included herein Renesas Electronics products are classified according to the following three quality grades Standard High Quality and Specific The recommended applications for each Renesas Electronics product depends on the product s quality grade as indicated below You must check the quality grade of each Renesas Electronics product before using it in a particular application You may not use any Renesas Electronics product for any application categorized as Specific without the prior written consent of Renesas Electronics Further you may not use any Renesas Electronics product for any application for which it is not intended without the prior written consent of Renesas Electronics Renesas Electronics shall not be in any way liable for any damages or losses incurred by you or third parties arising from the use of any Renesas Electronics product for an application categorized as Specific or for which the product is not intended where you have failed to obtain the prior written consent of Renesas Electronics The quality grade of each Renesas Electronics product is Standard unless otherwise expressly specified in a Renesas Electronics data sheets or data books etc Standard Computers office eq
15. olarity shown on silkscreen function Number LEDO PortE12 5 Active Low LED1 PortE13 3 Active Low LED2 PortE14 2 Active Low LED3 PortE15 1 Active Low Table 6 2 LED Port 6 3 Potentiometer A single turn potentiometer is connected to AN2 of the microcontroller This may be used to vary the input analog voltage value to this pin between AVCC and Ground 6 4 Serial port The microcontroller programming serial port SCI is connected to the E8 connector This serial port can optionally be connected to the RS 232 transceiver by fitting option resistors and the D connector in position J 7 The connections to be fitted are listed in the following table Description Function Fit for RS232 TxD1 Programming Serial Port R48 RxD1 Programming Serial Port R49 Table 6 3 Serial Options Links N B Do not connect an E8a debugger module not supplied if the RS232 portis used The board is designed to accept a straight through RS 232 cable 6 5 LCD Module A LCD module can be connected to the connector J 8 Any module that conforms to the pin connections and has a KS0066u compatible controller can be used with the tutorial code The LCD module uses a 4bit interface to reduce the pin allocation No contrast control is provided this must be set on the display module Table 6 4 shows the pin allocation and signal names used on this connector The module supplied with the CPU board only supports 5V operation
16. oup Hardware Manual For information about the SH7124 assembly language refer to the SH Series Programming Manual For information about the E10A Emulator please refer to the SH Family E10A USB Emulator User s Manual Online technical support and information is available at http www renesas com rsk Technical Contact Details America techsupportrtaQ renesas com Europe tools support eu renesas com Japan csc renesas com General information on Renesas Microcontrollers can be found on the Renesas website at http www renesas com 20 Renesas Starter Kit for SH7124 User s Manual Publication Date Rev 1 00 17 Jan 2008 Published by Renesas Technology Europe Ltd Duke s Meadow Millboard Road Bourne End Buckinghamshire SL8 5FH United Kingdom 02008 Renesas Technology Europe and Renesas Solutions Corp All Rights Reserved Renesas Starter Kit for SH7124 User s Manual ENESAS Renesas Electronics Corporation 1753 Shimonumabe Nakahara ku Kawasaki shi Kanagawa 211 8668 Japan REG10J0128 0100
17. s products or if you have any other inquiries Note 1 Renesas Electronics as used in this document means Renesas Electronics Corporation and also includes its majority owned subsidiaries Note 2 Renesas Electronics product s means any product developed or manufactured by or for Renesas Electronics C 7 D me 7 lt D D ENESAS Renesas Starter Kit for SH7124 User s Manual RENESAS SINGLE CHIP MICROCOMPUTER SuperH RISC engine Renesas Electronics Rev 1 00 2008 01 www renesas com Table of Contents Ghapter I Preface ss E ND a cine eh Acie NN a au vas 1 Ghaptet 2 PU OSC tz sfer ra a dee komora ada at bad ads 2 Chapter 3 Power Tail UT 3 3 ROQUIIS MES seated a a oft teehee rn a often Clan oL ie LT ETEL ahaa tae 3 3 2 Power Up BehavlOUF as pers EN ESTE GA IIN GN NISA aO 3 Chapter 4 Board UST TTT 4 441 Component layout su GE LISA GAS AAA 4 4 2 Board DIMENSIONS caian ome tial Kalk roo onda ponon Tabo ES eA ait ck naa epee danas teas 5 Chapter 5b Block Diagram svi sss I MEGA AFA 6 Ghapter 6 User OPI A TT iia lat 7 O c SWIICNES Der omo cao eat amo eoo doe Kane A ree T 7 A a E 7 6 3 OOO MO ss dt i a ee IA ed a OM AM AJ 7 6 4 Sellal pObtan aa eraj 8 6 5 LOD MoOQUIE 0 ir o AVA KA A A AGE a NDA dad 8 Ko eleien Ella Pre re erte e re ro ro nn no on o rn nm pu ppr mr o monto 9 6 7 OscillatorSOUNCes SA MANU INS A A vala ti 6 O MOSGUGIKCUII stel densi mora sba rean
18. to purchase the full tools from your distributor Warning The protection software for the compiler will detect changes to the system clock Changes to the system clock back in time may cause the trial period to expire prematurely 10 3 Breakpoint Support This RSK is supplied with E10A emulator which supports breakpoints in ROM For more details on breakpoints amp E10A functions please refer to SuperH Family E10A USB Emulator User s Manual 10 4 Memory Map The memory map shown in this section visually describes the locations of the each memory areas when operating the RSK in the default mode Mode 3 Mode 3 Single chip mode H 00000000 On chip ROM 128 kbytes H 0001 FFFF H 00020000 Reserved area H FFF9FFFF H FFFA0000 On chip RAM 8 kbytes H FFFFBFFF H FFFFCO00 On chip peripheral UO registers H FFFFFFFF Figure 10 1 Memory Map 18 Chapter 11 Component Placement 334 E Hr E apa JE E a e J amp gt MG JBU a E LL RSKGH7124 0 Ci JRi ROKS 1242000088 E slelo PRODUCT LABEL a 5 E ESTE u E E I mocz aj HE CXI EZI O dj wana 25 al xu EIA Figure 11 1 Component Placement Chapter 12 Additional Information For details on how to use High performance Embedded Workshop HEW refer to the HEW manual available on the CD or installed in the Manual Navigator For information about the SH7124 series microcontrollers refer to the SH7125 Group SH7124 Gr
19. uipment communications equipment test and measurement equipment audio and visual equipment home electronic appliances machine tools personal electronic equipment and industrial robots High Quality Transportation equipment automobiles trains ships etc traffic control systems anti disaster systems anti crime systems safety equipment and medical equipment not specifically designed for life support Specific Aircraft aerospace equipment submersible repeaters nuclear reactor control systems medical equipment or systems for life support e g artificial life support devices or systems surgical implantations or healthcare intervention e g excision etc and any other applications or purposes that pose a direct threat to human life You should use the Renesas Electronics products described in this document within the range specified by Renesas Electronics especially with respect to the maximum rating operating supply voltage range movement power voltage range heat radiation characteristics installation and other product characteristics Renesas Electronics shall have no liability for malfunctions or damages arising out of the use of Renesas Electronics products beyond such specified ranges Although Renesas Electronics endeavors to improve the quality and reliability of its products semiconductor products have specific characteristics such as the occurrence of failure at a certain rate and malfunctions under cert
20. via R4 when fitted 30 7 ASEMDO 31 8 NMI 32 9 FWE_E8B ASEBRK 33 10 MD1_E8A 34 11 Ground 6 19 12 IRQ3 36 Table 9 3 J 3 J4 Pin Circuit Net Name Device Pin Circuit Net Name Device Pin Pin 1 IRQ1 37 2 MO_UD TRISTn 38 3 AVss 39 4 PF7 40 5 PF6 41 6 AD3 42 7 AD1 43 8 User SW3 44 9 AD POT 45 10 AD2 46 1 ADO 47 12 AVcc 48 Table 9 4 J 4 9 2 Application Headers Table 9 5 and Table 9 6 below show the standard application header connections JA1 Pin Generic Header Name CPU board Device Pin Header Name CPU board Device Signal Name Pin Signal Name Pin 1 Regulated Supply 1 5V 2 Regulated Supply 1 GROUND 3 Regulated Supply2 NC 4 Regulated Supply 2 GROUND 5 Analogue Supply AVcc 48 6 Analogue Supply AVss 39 7 Analogue Reference NC 8 ADTRG NC 9 ADCO 10 ADO 47 10 ADC1 11 AD1 43 11 ADC2 2 AD2 46 12 ADC3 13 AD3 42 13 DACO NC 14 DAC1 NC 15 IOPort IO 0 26 16 IOPort O 1 24 17 IOPort IO 2 21 18 IOPort lO 3 20 19 IOPort lo 4 15 20 lOPort IO 5 14 21 IOPort IO 6 13 22 IOPort O 7 12 23 Opendrain IRQAEC IRQ3 36 24 PC Bus 3rd pin NC 25 C Bus NC 26 PC Bus NC Table 9 5 J A1 Standard Generic Header JA2 Pin Generic Header Name CPU board Device Pin Header Name CPU board Device Signal Name Pin Signal Name Pin 1 Open drain RESn 27 2 Ext
21. z Approved See www renesas com for details CPU board Table 6 6 Oscillators Resonators Warning When replacing the default oscillator with that of another frequency the debugging monitor will not function unless the following are corrected e FDT programming kernels supplied are rebuilt for the new frequency 6 8 Reset Circuit The CPU Board includes a simple latch circuit that links the mode selection and reset circuit This provides an easy method for swapping the device between Boot Mode and User mode This circuit is not required on customers boards as it is intended for providing easy evaluation of the operating modes of the device on the RSK Please refer to the hardware manual for more information on the requirements of the reset circuit The reset circuit operates by latching the state of the boot switch on pressing the reset button This control is subsequently used to modify the mode pin states as required The mode pins should change state only while the reset signal is active to avoid possible device damage The resetis held in the active state for a fixed period by a pair of resistors and a capacitor Please check the reset requirements carefully to ensure the reset circuit on the user s board meets all the reset timing requirements 11 Chapter 7 Modes The CPU board can be configured in User mode and Boot mode User mode may be used to run and debug user code while Boot mode may only be us
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