Section 14 Direct Memory Access Controller (DMAC)
Rev.1.00 Dec. 13, 2005 Page 559 of 1286
REJ09B0158-0100
14.2 Input/Output
Pins
The external pins for the DMAC are described below. Table 14.1 lists the configuration of the pins
that are connected to external device. The DMAC has pins for four channels (channel 0 to 3) for
external bus use.
Table 14.1 Pin Configuration
Channel Pin
Name
Function
I/O
Description
DREQ0
*
1
*
3
DMA transfer request
Input
DMA transfer request input from
external device to channel 0
DRAK0
*
2
*
4
DREQ0
acceptance
confirmation
Output Notifies acceptance of DMA transfer
request and start of execution from
channel 0 to external device
0
DACK0
*
2
*
5
DMA transfer end
notification
Output Strobe output from channel 0 to
external device which has output,
regarding DMA transfer request
DREQ1
*
1
*
6
DMA transfer request
Input
DMA transfer request input from
external device to channel 1
DRAK1
*
2
*
7
DREQ1
acceptance
confirmation
Output Notifies acceptance of DMA transfer
request and start of execution from
channel 1 to external device
1
DACK1
*
2
*
8
DMA transfer end
notification
Output Strobe output from channel 1 to
external device which has output,
regarding DMA transfer request
DREQ2
*
1
*
9
DMA transfer request
Input
DMA transfer request input from
external device to channel 2
DRAK2
*
2
*
10
DREQ2
acceptance
confirmation
Output Notifies acceptance of DMA transfer
request and start of execution from
channel 2 to external device
2
DACK2
*
2
*
11
DMA transfer end
notification
Output Strobe output from channel 2 to
external device which has output,
regarding DMA transfer request
Summary of Contents for SH7780 Series
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Page 82: ...Section 1 Overview Rev 1 00 Dec 13 2005 Page 32 of 1286 REJ09B0158 0100 ...
Page 122: ...Section 3 Instruction Set Rev 1 00 Dec 13 2005 Page 72 of 1286 REJ09B0158 0100 ...
Page 146: ...Section 4 Pipelining Rev 1 00 Dec 13 2005 Page 96 of 1286 REJ09B0158 0100 ...
Page 196: ...Section 6 Floating Point Unit FPU Rev 1 00 Dec 13 2005 Page 146 of 1286 REJ09B0158 0100 ...
Page 292: ...Section 9 L Memory Rev 1 00 Dec 13 2005 Page 242 of 1286 REJ09B0158 0100 ...
Page 492: ...Section 12 DDR SDRAM Interface DDRIF Rev 1 00 Dec 13 2005 Page 442 of 1286 REJ09B0158 0100 ...
Page 674: ...Section 15 Clock Pulse Generator CPG Rev 1 00 Dec 13 2005 Page 624 of 1286 REJ09B0158 0100 ...
Page 692: ...Section 16 Watchdog Timer and Reset Rev 1 00 Dec 13 2005 Page 642 of 1286 REJ09B0158 0100 ...
Page 726: ...Section 18 Timer Unit TMU Rev 1 00 Dec 13 2005 Page 676 of 1286 REJ09B0158 0100 ...
Page 1032: ...Section 25 Audio Codec Interface HAC Rev 1 00 Dec 13 2005 Page 982 of 1286 REJ09B0158 0100 ...
Page 1150: ...Section 28 General Purpose I O GPIO Rev 1 00 Dec 13 2005 Page 1100 of 1286 REJ09B0158 0100 ...
Page 1184: ...Section 29 User Break Controller UBC Rev 1 00 Dec 13 2005 Page 1134 of 1286 REJ09B0158 0100 ...
Page 1266: ...Section 31 Electrical Characteristics Rev 1 00 Dec 13 2005 Page 1216 of 1286 REJ09B0158 0100 ...
Page 1328: ...Appendix Rev 1 00 Dec 13 2005 Page 1278 of 1286 REJ09B0158 0100 ...
Page 1336: ...Rev 1 00 Dec 13 2005 Page 1286 of 1286 REJ09B0158 0100 ...
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