CHAPTER 5 REGISTERS
PRELIMINARY
NEC confidential and Proprietary
183
(13) Transmit POH mode register (MDPOHT)
The MDPOHT register sets the modes related to transmit POH operation.
Address
Register
Name
Port0: Port1: Port2: Port3:
Access Default
MDPOHT 004CH 044CH
084CH
0C4CH
R/W
00000000
H
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
Reserved
15
14
13
12
11
10 9 8 7 6 5 4 3 2 1 0
Reserved
PRDIM PTIUO
PTIMO LCDO
APRDIM J1SZ
B3M FSBM
Bit Field
Function
Default
D31-D8
Reserved
Set to 0.
0
D7
PRDIM
Selects the Path RDI function.
1: Enhanced Path RDI
0: One-bit Path RDI
0
D6
PTIUO
Specifies whether Path TIU detection is included in the condition of automatic
loopback transmission of Enhanced Path RDI connectivity.
1: Includes Path TIU.
0: Does not include Path TIU.
0
D5
PTIMO
Specifies whether Path TIM detection is included in the condition of automatic
loopback transmission of Enhanced Path RDI connectivity.
1: Includes Path TIM.
0: Does not include Path TIM.
0
D4
LCDO
Specifies whether LCD detection is included in the condition of automatic loopback
transmission of Path RDI.
1: Includes LCD.
0: Does not include LCD.
0
D3
APRDIM
Controls the automatic loopback transmission function of Path RDI.
1: Not automatic loopback
0: Automatic loopback
0
D2
J1SZ
Selects the size of the transmit J1 path trace message.
1: 16 bytes
0: 64 bytes
0
D1
B3M
Selects even or odd parity for BIP-8 (B3) parity operation of transmit path.
1: Odd parity
0: Even parity
0
D0
FSBM
Selects a value to be inserted in the Fixed Stuff byte area of the transmit frame.
1: Inserts 00H.
0: Inserts FFH.
0
Summary of Contents for UPD98413
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