Datasheet

138
SAM7X Series [DATASHEET]
6120K–ATARM–11-Feb-14
22.4.3 PDC Transmit Pointer Register
Register Name: PERIPH_TPR
Access Type: Read-write
• TXPTR: Transmit Pointer Address
Address of the transmit buffer.
22.4.4 PDC Transmit Counter Register
Register Name: PERIPH_TCR
Access Type: Read-write
• TXCTR: Transmit Counter Value
TXCTR is the size of the transmit transfer to be performed. At zero, the peripheral DMA transfer is stopped.
31 30 29 28 27 26 25 24
TXPTR
23 22 21 20 19 18 17 16
TXPTR
15 14 13 12 11 10 9 8
TXPTR
76543210
TXPTR
31 30 29 28 27 26 25 24
--
23 22 21 20 19 18 17 16
--
15 14 13 12 11 10 9 8
TXCTR
76543210
TXCTR