PMC-Sierra, Inc.
PM5356
S/UNI-622-MAX
DATASHEET
S/UNI-622-MAX
PMC-1980589
ISSUE 5
SATURN USER NETWORK INTERFACE (622-MAX)
APSFEBE
The APSFEBE bit controls the overwriting of the transmit path FEBE values. When
APSFEBE is set high, the FEBE information on the APS[4:0] pins is transmitted by TPOP.
When APSFEBE is set low, the FEBE information from RPOP is transmitted by TPOP. The
APSOE bit must be set low when APSFEBE is set high.
APSI:
The APS FIFO interrupt indicates if the APS FIFO has underrun or overrun. The APSI
register is set high when a FIFO underrun or overrun has occurred since the register was last
read. The APSI register is set low when the register is read. This interrupt register should be
periodically polled to ensure the APS FIFO is operating normally when configured for 1+1
APS operation.
APSFRST:
The APS FIFO Reset bit controls the four-byte FIFO which handles minor phase variations
between the parallel input clock PTCLK and the transmit clock TCLK. When APSFRST is set
high, the FIFO is held in reset. When APSFRST is set low, the FIFO may be reset during
system reset. The APSFRST should be set high for at least 4 TCLK cycles when either
S/UNI-622-MAX devices in the 1+1 APS configuration are reset.
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
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PMC [ PMC-SIERRA, INC ]
