SH7604 Datasheet, PDF (254/633 Pages) Hitachi Semiconductor – Hardware Manual

Bit 15: DM1
0
1
Bit 14: DM0
0
1
0
1
Description
Fixed destination address
(Initial value)
Destination address is incremented (+1 for byte transfer size,
+2 for word transfer size, +4 for longword transfer size, +16
for 16-byte transfer size)
Destination address is decremented (–1 for byte transfer size,
–2 for word transfer size, –4 for longword transfer size, –16
for 16-byte transfer size)
Reserved (setting prohibited)
• Bits 13 and 12—Source Address Mode Bits 1, 0 (SM1, SM0): Select whether the DMA source
address is incremented, decremented or left fixed. In single address mode, SM1 and SM0 are
ignored when transfers are made from an external device with DACK to a memory-mapped
external device, on-chip peripheral module, or external memory. For a 16-byte transfer, the
address is incremented by +16 regardless of the SM1 and SM0 values. SM1 and SM0 are
initialized to 00 by a reset and in standby mode. Values are retained during a module standby.
Bit 13: SM1
0
1
Bit 12: SM0
0
1
0
1
Description
Fixed source address (+16 for 16-byte transfer size)
(Initial value)
Source address is incremented (+1 for byte transfer size, +2
for word transfer size, +4 for longword transfer size, +16 for
16-byte transfer size)
Source address is decremented (–1 for byte transfer size, –2
for word transfer size, –4 for longword transfer size, +16 for
16-byte transfer size)
Reserved (setting prohibited)
• Bits 11 and 10—Transfer Size Bits (TS1, TS0): Select the DMA transfer size. When the
transfer source or destination is an on-chip peripheral module register for which an access size
has been specified, that size must be selected. During 16-byte transfers, set the transfer address
mode bit for dual address mode. TS1 and TS0 are initialized to 00 by a reset and in standby
mode. Values are retained during a module standby.
Bit 11: TS1
0
1
Bit 10: TS0
0
1
0
1
Description
Byte unit
Word (2-byte) unit
Longword (4-byte) unit
16-byte unit (4 longword transfers)
(initial value)
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