XC161 Datasheet, PDF (370/419 Pages) Infineon Technologies AG – 16-Bit Single-Chip Microcontroller with C166SV2 Core Volume 2 (of 2): Peripheral Units

XC161 Derivatives
Peripheral Units (Vol. 2 of 2)
Serial Data Link Module SDLM
22.4.1 Transmission Related Registers
Register TXCNT contains the number of bytes of the transmit buffer, which have already
been sent out on the bus.
TXCNT
Bus Transmit Byte Counter Register
Reset Value: 0000_H
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
0
TxCNT
r
rh
Field
TxCNT
0
Bits Type Description
[3:0] rh
Bus Transmit Byte Counter
Bitfield TxCNT contains the number of bytes
transmitted by the SDLM module. TxCNT is reset by
resetting bit TxRQ.
A transmit interrupt can be generated when TxRQ is
reset by hardware. TxCPU equal to TxCNT and
successful transmission (arbitration not lost) resets
bit TxRQ by hardware in Normal Mode.
= pointer for SDLM access to transmit buffer
[15:4] –
Reserved; returns ‘0’ if read.
User’s Manual
SDLM_X, V2.0
22-39
V2.2, 2004-01