PMC-Sierra, Inc.
PRELIMINARY
PM5381 S/UNI-2488
DATASHEET
PMC-2000489
ISSUE 1
SATURN USER NETWORK INTERFACE FOR 2488 MBIT/S
These bits are only valid for THPP STS-1/STM0 #1.
SRCRDI:
The valid high SRCRDI register bit enables the THPP to overwrite the G1 byte with the RDI
field in the THPP Transmit H4 Mask and G1 register. When SRCREI is set to logic zero, the
RDI source is other than the THPP Transmit H4 Mask and G1 register.
These bits are only valid for THPP STS-1/STM0 #1.
PTBJ1:
The PTBJ1 or Path Trace Buffer J1 byte register bit is used to determine the origin of the path
trace byte to be inserted. When PTBJ1 is high, the J1 byte is sourced from the TTTP PATH
block; otherwise, the J1 byte is either sourced from the TPOH input or not inserted at all as
controlled using the SRCJ1 bit.
These bits are only valid for THPP STS-1/STM0 #1.
ENH4MASK:
When ENH4MASK is logic high, the H4[7:0] byte in THPP Transmit H4 Mask and G1 register
is used as an error mask on the H4 byte. When ENH4MASK is logic low, the H4[7:0] byte in
THPP Transmit H4 Mask and G1 register is inserted as the H4 byte.
These bits are only valid for THPP STS-1/STM0 #1.
ENG1REC:
The valid high ENG1REC register bit enables the insertion of the PRDI[2:0] and PREI[3:0] of
the G1 byte from the SARC block. When ENG1REC is set to logic low, the G1 byte source is
other than the SARC block.
B3MASK:
When B3MASK is logic high, the byte received via the TPOH (valid only if TPOHEN is logic
high) bit serial stream is to be used as a mask for an internally generated B3. When
B3MASK is logic low, the byte received on TPOH (valid only if TPOHEN is logic high) will be
inserted in the B3 byte if the path overhead source priority is TPOH.
H4MASK:
When H4MASK is logic high, the byte received via the TPOH (valid only if TPOHEN is logic
high) bit serial stream is to be used as a mask for the H4 byte. When H4MASK is logic low,
the byte received on TPOH (valid only if TPOHEN is logic high) will be inserted in the H4 byte
only if the path overhead source priority is TPOH.
Proprietary and Confidentail to PMC-Sierra Inc., and for its Customer’s Internal Use
234
PMC [ PMC-SIERRA, INC ]
