NEC UPD98413 User Manual page 182

(12) Transmit pointer mode register (MDPTRT)
The MDPTRT register sets the modes related to transmit pointer operation.
Register
Name
Port0:
MDPTRT 0048H
31 30 29 28
15 14 13 12
Bit Field
D31-D2 Reserved Set to 0.
D1-D0 SS[1:0] Sets the contents of the SS bits of the transmit pointer.
182
CHAPTER 5 REGISTERS
Address
Port1: Port2: Port3:
0448H 0848H 0C48H
27 26 25 24
Reserved
11 10 9 8
Reserved
PRELIMINARY
Access Default
R/W 00000000 H
23 22 21 20
7 6 5 4
Function
19 18 17 16
3 2 1 0
SS[1:0]
Default
0
0
NEC confidential and Proprietary