344
Bits 11 to 8—Resource Select Bits 3 to 0 (RS3 to RS0): Specify which transfer requests will be
sent to the DMAC.
Bit 11:
RS3
Bit 10:
RS2
Bit 9:
RS1
Bit 8:
RS0
Description
0
0
0
0
External request
*
, dual address mode
(Initial value)
0
0
0
1
Setting prohibited
0
0
1
0
External request / Single address mode
External address space
→
external device with DACK
0
0
1
1
External request / Single address mode
External device with DACK
→
external address space
0
1
0
0
Auto request
0
1
0
1
Setting prohibited
0
1
1
0
Setting prohibited
0
1
1
1
Setting prohibited
1
0
0
0
Setting prohibited
1
0
0
1
Setting prohibited
1
0
1
0
IrDA transmission
1
0
1
1
IrDA reception
1
1
0
0
SCIF transmission
1
1
0
1
SCIF reception
1
1
1
0
A/D converter
1
1
1
1
CMT
Notes: When using 16-byte transfer, the following settings must not be made:
1010 IrDA transmission
1011 IrDA reception
1100 SCIF transmission
1101 SCIF reception
1110 A/D converter
1111 CMT
Operation is not guaranteed if these settings are made.
*
External request specification is valid only in channels 0 and 1. None of the request
sources can be selected in channels 2 and 3.
Содержание SH7709S
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Страница 292: ...273 T1 CKIO A25 to A0 CSn RD WR RD D31 to D0 WEn D31 to D0 BS T2 Read Write Figure 10 6 Basic Timing of Basic Interface ...
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