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ST90158 - MULTIPROTOCOL SERIAL COMMUNICATIONS INTERFACE (SCI-M)
MULTIPROTOCOL SERIAL COMMUNICATIONS INTERFACE (Cont’d)
RECEIVER DMA COUNTER POINTER (RDCPR)
R240 - Read/Write
Reset value: undefined
Bit 7:1 = RC[7:1]:
Receiver DMA Counter Pointer.
These bits contain the address of the receiver
DMA transaction counter in the Register File.
Bit 0 = RR/M:
Receiver Register File/Memory Se-
lector.
0: Select Memory space as destination.
1: Select the Register File as destination.
RECEIVER DMA ADDRESS POINTER (RDAPR)
R241 - Read/Write
Reset value: undefined
Bit 7:1 = RA[7:1]:
Receiver DMA Address Pointer.
These bits contain the address of the pointer (in
the Register File) of the receiver DMA data source.
Bit 0 = RPS:
Receiver DMA Memory Pointer Se-
lector.
This bit is only significant if memory has been se-
lected for DMA transfers (RR/M = 0 in the RDCPR
register).
0: Select ISR register for receiver DMA transfers
address extension.
1: Select DMASR register for receiver DMA trans-
fers address extension.
TRANSMITTER DMA COUNTER POINTER
(TDCPR)
R242 - Read/Write
Reset value: undefined
Bit 7:1 = TC[7:1]:
Transmitter DMA Counter Point-
er.
These bits contain the address of the transmitter
DMA transaction counter in the Register File.
Bit 0 = TR/M:
Transmitter Register File/Memory
Selector.
0: Select Memory space as source.
1: Select the Register File as source.
TRANSMITTER DMA ADDRESS POINTER
(TDAPR)
R243 - Read/Write
Reset value: undefined
Bit 7:1 = TA[7:1]:
Transmitter DMA Address Point-
er.
These bits contain the address of the pointer (in
the Register File) of the transmitter DMA data
source.
Bit 0 = TPS:
Transmitter DMA Memory Pointer Se-
lector.
This bit is only significant if memory has been se-
lected for DMA transfers (TR/M = 0 in the TDCPR
register).
0: Select ISR register for transmitter DMA transfers
address extension.
1: Select DMASR register for transmitter DMA
transfers address extension.
70
RC7
RC6
RC5
RC4
RC3
RC2
RC1
RR/M
70
RA7
RA6
RA5
RA4
RA3
RA2
RA1
RPS
70
TC7
TC6
TC5
TC4
TC3
TC2
TC1
TR/M
70
TA7
TA6
TA5
TA4
TA3
TA2
TA1
TPS
9