CY7C955-NC Cypress Semiconductor Corp, CY7C955-NC Datasheet - Page 29

• Manufacturer Part Number: CY7C955-NC
• Manufacturer: Cypress Semiconductor Corp

Specifications of CY7C955-NC

• Lead Free Status / RoHS Status: Not Compliant

REG
7
6
5
4
3
2
1
0
DS
This bit controls whether SONET scrambling is done to the transmit data stream.
0:
1:
LAIS
This bit controls whether line Alarm Indication Signal (AIS) is being inserted into the transmit data stream.
1:
0:
REG
7
6
5
4
3
2
1
0
DLOS
This bit generates a continuous loss of signal error in the transmit data stream.
0:
1:
DBIP8
This bit generates a continuous section BIP 8 (B1) error in the transmit data stream.
0:
1:
DFP
This bit generates a framing byte error in the transmit data stream.
0:
1:
BIT POSITION
BIT POSITION
Scrambling is performed.
Scrambling is not performed.
All bits in the SONET frame (excluding the section overhead) are converted to a 1 prior to SONET scrambling. This
operation begins immediately at the next frame boundary.
No line AIS is transmitted.
Normal operation.
TXD transmits all zeros.
Normal operation.
B1 byte is inverted.
Normal operation.
The most significant bit of the section overhead framing byte is converted from 1 to 0. In other words, F6H becomes H
in the first A1 byte of the section overhead.
14H
15H
Transmit Section Overhead Processor Control Register
Unused
DS
Unused
Unused
Unused
Unused
Unused
LAIS
Transmit Section Overhead Processor Error Insertion Register
Unused
Unused
Unused
Unused
Unused
DLOS
DBIP8
DFP
PRELIMINARY
NAME
NAME
29
R/W
R/W
R/W
R/W
R/W
READ/WRITE
READ/WRITE
0
0
0
0
0
CY7C955
DEFAULT
DEFAULT