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SH7243 Datasheet(PDF) 421 Page - Renesas Technology Corp

Part # SH7243
Description  Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine family
PDF  1726 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

SH7243 Datasheet(HTML) 421 Page - Renesas Technology Corp

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Section 10 Direct Memory Access Controller (DMAC)
Rev. 1.00 Jun. 26, 2008 Page 391 of 1692
REJ09B0393-0100
10.3.3
DMA Transfer Count Registers (DMATCR)
The DMA transfer count registers (DMATCR) are 32-bit readable/writable registers that specify
the number of DMA transfers. The transfer count is 1 when the setting is H'00000001, 16,777,215
when H'00FFFFFF is set, and 16,777,216 (the maximum) when H'00000000 is set. During a DMA
transfer, these registers indicate the remaining transfer count.
The upper eight bits of DMATCR are always read as 0, and the write value should always be 0. To
transfer data in 16 bytes, one 16-byte transfer (128 bits) counts one.
DMATCR is initialized to H'00000000 by a reset and retains the value in software standby mode
and module standby mode.
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0000000000000000
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Bit:
Initial value:
R/W:
Bit:
Initial value:
R/W:
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