NEC UPD98413 User Manual page 192

(22) Receive SOH mode register (MDSOHR)
The MDSOHR register sets the modes related to receive SOH operation.
Register
Name
Port0:
MDSOHR 0070 H
31 30 29 28
15 14 13 12
FSCM J0MSG STIUT STIUD
Bit Field
D31- Reserved Set to 0.
D16
FSCM
D15 Controls descramble of a frame.
1: Not descramble
J0MSG
D14 Changes "n" of the received trace message drop condition.
D13 STIUT Changes "n" of the Section TIU termination condition.
STIUD
D12 Changes "n" of the Section TIU detection condition.
STIMDT
D11 Changes "n" of the Section TIM detection/termination condition.
LOFDT
D10 Changes the LOF detection/termination condition.
1: LOF status is detected if OOF status lasts for 3 ms.
0: LOF status is detected at the same time as OOF detection.
D9-D8 OOFT[1:0] Changes the number of backward protection stages
status is cleared if the frame synchronization pattern has been detected in the
receive cell stream
D7-D6 OOFD[1:0] Changes the number of forward protection stages
µ
pattern in the receive data stream
D5 J0SYNC Specifies whether the first pattern of a message or end pattern is selected as a
synchronization pattern when the J0 section trace message is received.
D4 J0SZ Selects the size of the receive J0 section trace message.
B1M
D3 Selects even or odd parity for BIP-8 (B1) parity operation of receive section.
192
CHAPTER 5 REGISTERS
Address
Port1: Port2: Port3:
0470 H 0870 H 0C70 H
27 26 25 24
Reserved
11 10 9 8
STIMDT LOFDT OOFT[1:0]
0: Descramble
1: n = 5
1: n = 5
1: n = 8
1: n = 5
LOF status is terminated if the
LOF status is terminated at the same time as OOF termination.
δ
times in a row.
11: 4 10: 3
PD98413 is placed in the OOF status if it cannot detect a frame synchronization
11: 6 10: 5
1: Selects the first word of the message as a synchronization pattern.
0: Selects the last word of the message as a synchronization pattern.
1: 16 bytes 0: 64 bytes
1: Odd parity
PRELIMINARY
Access Default
R/W 00007D40 H
23 22 21 20
7 6 5 4
OOFD[1:0] J0SYNC J0SZ
Function
0: n = 3
0: n = 3
0: n = 5
0: n = 3
µ
PD98413 is not in the OOF status for 3ms.
δ
for OOF detection. The OOF
01: 2 00: Reserved
α
for OOF detection. The
α
times in a row.
01: 4 00: 3
0: Even parity
19 18 17 16
3 2 1 0
B1M LOST Res CDO
Default
0
0
1
1
1
1
1
01
01
0
0
0
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