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Renesas SH7203 manual

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Table of contents for the manual

  • Page 1

    APPLICATION NOTE REJ06B0734-0100/Rev.1.00 April 2008 Page 1 of 17 SH7263/SH7203 Group Data Transfer to On-chip P eripheral Modules with DMAC Introduction This applicat ion note p rovides an exam ple of tra nsferring d ata to on-chi p periphe ral modul es with the di rect m emory access controller (DMAC) of the SH7263/SH7203. Target Device SH7263/SH[...]

  • Page 2

    SH7263/SH7203 Group Data Transfer to On-chip Peripheral Modules with DMAC REJ06B0734-0100/Rev.1.00 April 2008 Page 2 of 17 1. Introduction 1.1 Specification • DMAC channel 1 is used to transfer data from external me mory to the transmit FIFO data register (SCFTDR) in the serial communication interface with FI FO (SCIF c hannel 0) in order to tra [...]

  • Page 3

    SH7263/SH7203 Group Data Transfer to On-chip Peripheral Modules with DMAC REJ06B0734-0100/Rev.1.00 April 2008 Page 3 of 17 2. Description of Sample Application In this sampl e application, t he DMAC and on-chip pe ripheral m odule requ ests are used to transfer data from exte rnal memory to the SCIF. 2.1 Operational Overvi ew of Modules Used When a[...]

  • Page 4

    SH7263/SH7203 Group Data Transfer to On-chip Peripheral Modules with DMAC REJ06B0734-0100/Rev.1.00 April 2008 Page 4 of 17 DMATCR_n SAR_n CHCR_n DAR_n DMAOR DMARS0 to DMARS3 HEIn DACK0 to DACK3, TEND0, TEND1 DEIn RDMATCR_n RSAR_n RDAR_n On-chip memory On-chip peripheral module DMA transfer request signal DMA transfer acknowledge signal Interrupt co[...]

  • Page 5

    SH7263/SH7203 Group Data Transfer to On-chip Peripheral Modules with DMAC REJ06B0734-0100/Rev.1.00 April 2008 Page 5 of 17 2.2 Procedure for Setting Used Modules This section describes the procedure for making initial settings when the DMAC is to be used to transfer data from memory to o n-chip pe ripheral m odules. On-c hip peri pheral m odule req[...]

  • Page 6

    SH7263/SH7203 Group Data Transfer to On-chip Peripheral Modules with DMAC REJ06B0734-0100/Rev.1.00 April 2008 Page 6 of 17 2.3 Operation of Sample Program In this sample program, SCIF transmit FIFO data empty tran sfer requests are m ade to activate DMAC c hannel 1, and t o transfer data from external memory to the transmit FIFO da ta register (SCF[...]

  • Page 7

    SH7263/SH7203 Group Data Transfer to On-chip Peripheral Modules with DMAC REJ06B0734-0100/Rev.1.00 April 2008 Page 7 of 17 2.4 Processing Procedure of Sample Program In this sample program, character string data stored in external memory are transferre d by DMA to the transmit FIFO data register (SCFTDR) o n SCIF chan nel 0, and the n are transm it[...]

  • Page 8

    SH7263/SH7203 Group Data Transfer to On-chip Peripheral Modules with DMAC REJ06B0734-0100/Rev.1.00 April 2008 Page 8 of 17 Table 3 Macro Definitions Used in Sample Program Macro Definition Setting Value Description DMA_SIZE_BYTE H'0000 Byte transfer DMA_SIZE_WORD H'0001 Word transfer DMA_SIZE_LONG H'0002 Longword transfer DMA_SIZE_LO[...]

  • Page 9

    SH7263/SH7203 Group Data Transfer to On-chip Peripheral Modules with DMAC REJ06B0734-0100/Rev.1.00 April 2008 Page 9 of 17 3. Sample Program 1. Sample Progra m Listi ng "main.c" ( 1) 1 /*""FILE COMMENT""************************************************************** 2 * 3 * System Name : SH7203 Sample Program 4 * File N[...]

  • Page 10

    SH7263/SH7203 Group Data Transfer to On-chip Peripheral Modules with DMAC REJ06B0734-0100/Rev.1.00 April 2008 Page 10 of 17 2. Sample Pro gram Li sting "main.c" (2) 54 /* ---- Values for baud rate specification ---- */ 55 enum{ 56 CBR_1200, 57 CBR_2400, 58 CBR_4800, 59 CBR_9600, 60 CBR_19200, 61 CBR_31250, 62 CBR_38400, 63 CBR_57600, 64 C[...]

  • Page 11

    SH7263/SH7203 Group Data Transfer to On-chip Peripheral Modules with DMAC REJ06B0734-0100/Rev.1.00 April 2008 Page 11 of 17 3. Sample Progra m Listi ng "main.c" ( 3) 107 /* ==== Enabling SCIF0 initialization/transfer ==== */ 108 io_init_scif0(CBR_115200); 109 /* Communication mode :UART mode */ 110 /* Bit rate :115.2Kbps */ 111 /* TXI int[...]

  • Page 12

    SH7263/SH7203 Group Data Transfer to On-chip Peripheral Modules with DMAC REJ06B0734-0100/Rev.1.00 April 2008 Page 12 of 17 4. Sample Pro gram Li sting "main.c" (4) 161 /* ----Setting DMA source address register---- */ 162 DMAC.SAR1.LONG = (unsigned long)src; 163 164 /* ----Setting DMA reload source address register---- */ 165 DMAC.RSAR1.[...]

  • Page 13

    SH7263/SH7203 Group Data Transfer to On-chip Peripheral Modules with DMAC REJ06B0734-0100/Rev.1.00 April 2008 Page 13 of 17 5. Sample Progra m Listi ng "main.c" ( 5) 217 bit6 : DS : DREQ select :0 Low level Unused 218 bit5 : TB : cycle :0--------------- Cycle-stealing mode 219 bit4-3 : TS : transfer size:B'00--- Byte transfer 220 bit[...]

  • Page 14

    SH7263/SH7203 Group Data Transfer to On-chip Peripheral Modules with DMAC REJ06B0734-0100/Rev.1.00 April 2008 Page 14 of 17 6. Sample Pro gram Li sting "main.c" (7) 272 * Function : Initializes SCIF0 273 * : Asynchronous (UART)/ 8 bits/ No parity/ 1 stop bit/ RTS/CTS disabled 274 * : Baud rate is specified by argument bps 275 * : 276 *---[...]

  • Page 15

    SH7263/SH7203 Group Data Transfer to On-chip Peripheral Modules with DMAC REJ06B0734-0100/Rev.1.00 April 2008 Page 15 of 17 4. Documents for Reference • Software Manual SH-2A, SH2A -FPU Softwa re Manual The most up-t o-date versi on of this document i s available o n the Renesas Technology Website. • Hardware Manual SH7203 Group Hardw are Manua[...]

  • Page 16

    SH7263/SH7203 Group Data Transfer to On-chip Peripheral Modules with DMAC REJ06B0734-0100/Rev.1.00 April 2008 Page 16 of 17 Website and Support Renesas Technolo gy Website http://www.renesas.com/ Inquiries http://www.renesas.com/inquiry csc@renesas.com Revision Record Description Rev. Date Page Summary 1.00 Apr.17.08 — First edition issued All tr[...]

  • Page 17

    SH7263/SH7203 Group Data Transfer to On-chip Peripheral Modules with DMAC REJ06B0734-0100/Rev.1.00 April 2008 Page 17 of 17 1. This document is provided for reference purposes only so that Renesas customers may select the appropriate Renesas products for their use. Renesas neither makes warranties or representations with respect to the accuracy or [...]