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Rev. 5.00, 09/03, page 340 of 760
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
0100Auto 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
1010IrDA transmission
1011IrDA reception
1100SCIF transmission
1101SCIF reception
1110A/D converter
1111CMT
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.