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Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
Bit name Reserved Reserved Reserved Reserved P_STATE[1:0] RX_LOP RX_PAIS
R/W ———— RRR
Value 0000 0 0 11
after
reset
ADDR=0x128: Receive Pointer Status(1)
Bits 7-3: Reserved
Bits 3-2: P_STATE_[1:0]: These bits are used to monitor the first pair of H1/H2 bytes in the received
SONET/SDH frame, and to indicate the current state of the HDMP-3001 pointer interpreter. A 00
indicates a normal pointer, a 01 indicates Alarm Indication Signal, and 10 indicates Loss of
Pointer.
Bit 1: RX_LOP: Receive Loss of Pointer Indication
Bit 0: RX_PAIS: Receive Path Alarm Indication Signal
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
Bit name Reserved Reserved LOP3 AIS3 LOP2 AIS2 Reserved Reserved
R/W —— RR R R ——
Value 00010100
after
reset
ADDR=0x12A: Receive Pointer Status(2)
Bits 7-6: Reserved
Bit 5: LOP3: It is used to monitor the third pair of H1/H2 pointer bytes for the correct concatenation
indications, and indicates the current state of the HDMP-3001 pointer interpreter. When set, it is in
LOP.
Bit 4: AIS3: It is used to monitor the third pair of H1/H2 pointer bytes for the correct concatenation
indications, and indicates the current state of the HDMP-3001 pointer interpreter. When set, it is in
AIS.
Bit 3: LOP2: It is used to monitor the second pair of H1/H2 pointer bytes for the correct concatenation
indications, and indicates the current state of the HDMP-3001 pointer interpreter. When set, it is in
LOP.
Bit 2: AIS2: It is used to monitor the second pair of H1/H2 pointer bytes for the correct concatenation
indications, and indicates the current state of the HDMP-3001 pointer interpreter. When set, it is in
AIS.
Bits 1-0: Reserved