Datasheet

SAM9G20
DS60001516A-page 256  2017 Microchip Technology Inc.
23.4.3 Transmit Pointer Register
Name:PERIPH_TPR
Access:Read/Write
TXPTR: Transmit Counter Register
TXPTR must be set to transmit buffer address.
When a half duplex peripheral is connected to the PDC, RXPTR = TXPTR.
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