Datasheet

 2017 Microchip Technology Inc. DS60001516A-page 261
SAM9G20
23.4.8 Transmit Next Counter Register
Name:PERIPH_TNCR
Access:Read/Write
TXNCTR: Transmit Counter Next
TXNCTR contains next transmit buffer size.
When a half duplex peripheral is connected to the PDC, RXNCTR = TXNCTR.
31 30 29 28 27 26 25 24
––––––––
23 22 21 20 19 18 17 16
––––––––
15 14 13 12 11 10 9 8
TXNCTR
76543210
TXNCTR