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
128
Register 0x45: TPOP Arbitrary Pointer LSB
Bit Type Function Default
Bit 7 R/W APTR[7] 0
Bit 6 R/W APTR[6] 0
Bit 5 R/W APTR[5] 0
Bit 4 R/W APTR[4] 0
Bit 3 R/W APTR[3] 0
Bit 2 R/W APTR[2] 0
Bit 1 R/W APTR[1] 0
Bit 0 R/W APTR[0] 0
This register allows an arbitrary pointer to be inserted for diagnostic purposes.
APTR[7:0]:
The APTR[7:0] bits, along with the APTR[9:8] bits in the TPOP Arbitrary
Pointer MSB 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.