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S/UNI-QUAD
PMC-Sierra, Inc.
PM5349 S/UNI-QUAD
DATASHEET
PMC-971239 ISSUE 6 SATURN USER NETWORK INTERFACE (155-QUAD)
Proprietary and Confidential to PMC-Sierra, Inc., and for its Customers’ Internal Use
129
Register 0x46: TPOP Arbitrary Pointer MSB
Bit Type Function Default
Bit 7 R/W NDF[3] 1
Bit 6 R/W NDF[2] 0
Bit 5 R/W NDF[1] 0
Bit 4 R/W NDF[0] 1
Bit 3 R/W S[1] 1
Bit 2 R/W S[0] 0
Bit 1 R/W APTR[9] 0
Bit 0 R/W APTR[8] 0
This register allows an arbitrary pointer to be inserted for diagnostic purposes.
APTR[9:8]:
The APTR[9:8] bits, along with the APTR[7:0] bits in the TPOP Arbitrary
Pointer LSB Register are used to set an arbitrary payload pointer value. The
arbitrary pointer value is inserted in the transmit stream by writing a logic one
to the PLD bit in the TPOP Pointer Control Register.
If the FTPTR bit in the TPOP Pointer Control register is a logic one, the
current APTR[9:0] value is inserted into the payload pointer bytes (H1 and
H2) in the transmit stream.
S[1], S[0]:
The S[1:0] bits contain the value inserted in the S[1:0] bit positions (also
referred to as the unused bits) in the payload pointer.
NDF[3:0]:
The NDF[3:0] bits contain the value inserted in the NDF bit positions when an
arbitrary new payload pointer value is inserted (using the PLD bit in the TPOP
Pointer Control Register) or when new data flag generation is enabled using
primary input NDF, or the NDF bit in the TPOP Pointer Control Register.