PMC-Sierra, Inc.
PM5356
S/UNI-622-MAX
DATASHEET
S/UNI-622-MAX
PMC-1980589
ISSUE 5
SATURN USER NETWORK INTERFACE (622-MAX)
Register 0x06: S/UNI-622-MAX APS Configuration and Control
Bit
Bit 7
Type
Function
Default
R/W
R
APSFRST
APSI
0
X
X
0
0
0
0
0
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Unused
APSFEBE
APSRDI
APSPD
APSOE
APSEN
R/W
R/W
R/W
R/W
R/W
This register controls the APS transmit path override and the transmit path RDI and FEBE
controls for 1+1 APS operation. See the Operation section for more discussion
APSEN:
The APSEN bit controls the 1+1 APS mode of the S/UNI-622-MAX. When APSEN is set
high, the S/UNI-622-MAX transmit path data stream may be supplied to another S/UNI-622-
MAX using the POUT[7:0] bus. When APSEN is set low, the S/UNI-622-MAX operates
normally and POUT[7:0] is held at a constant value.
APSOE:
The APSOE bit controls the direction of the APS[4:0] pins. When APSOE is set low, the
APS[4:0] pins are inputs and supply path RDI and FEBE information to TPOP. When APSEN
is set high, the APS[4:0] pins are outputs and supply the receive path RDI and FEBE
information from RPOP.
APSPD:
The APSPD bit controls overwriting of the transmit path data stream. When APSPD is set
high, the transmit path data stream from TPOP is overwritten from the data sampled on the
parallel input PIN[7:0] bus. A four-byte FIFO is used to handle minor phase variations
between the transmit clock TCLK and the parallel input clock PICLK. When APSPD is set
low, the TPOP path data stream is used.
APSRDI:
The APSRDI bit control the overwriting of the transmit path RDI values. When APSRDI is set
high, the RDI information on the APS[4:0] pins is transmitted by TPOP. When APSRDI is set
low, the RDI information from RPOP is transmitted by TPOP. The APSOE bit must be set low
when APSRDI is set high.
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
77
PMC [ PMC-SIERRA, INC ]
