PM7311 pmc-sierra, PM7311 Datasheet - Page 42

• Manufacturer Part Number: PM7311
• Description: Freedm 84a1024l Assp Telecom Standard Datasheet
• Manufacturer: pmc-sierra

Proprietary and Confidential to PMC-Sierra, Inc., and for its customers’ internal use.
Document No.: PMC-2021832, Issue 2
Pin Name
REOP
RMOD
RERR
Type
Output
Tristate
Output
Output
Tristate
Tristate
Pin
No.
W5
W4
W1
FREEDM 84A1024L ASSP Telecom Standard Product Data Sheet
Function
non-zero value), RSOP is asserted at the beginning of every
partial packet created by the RFRAG block, whether or not
that partial packet corresponds to the start of a real packet.
The receive end of packet signal (REOP) denotes the end of a
packet. REOP is only valid during data transfer.
REOP is updated on the rising edge of RXCLK.
Any-PHY Level 2 Mode:
When REOP is set high, RXDATA[15:0] contains the last data
byte of a packet. When REOP is set low, RXDATA[15:0] does
not contain the last data byte of a packet.
REOP is tristated when the FREEDM 84A1024L device is not
selected via the RENB signal.
Any-PHY Level 3 Mode:
When REOP is set high, RXDATA[7:0] contains the last data
byte of a packet. When REOP is set low, RXDATA[7:0] does
not contain the last data byte of a packet.
Any-PHY Level 2 Mode:
The receive word modulo signal (RMOD) indicates the size of
the current word on RXDATA[15:0]. When RXDATA[15:0]
does not contain the last byte of a packet (REOP set low),
RMOD is set low. When RMOD is set high and REOP is set
high, RXDATA[15:8] contains the last data byte of a packet.
When RMOD is set low and REOP is set high, RXDATA[7:0]
contains the last byte of the packet, or optionally, the error
status byte. The behavior of RMOD relates only to packet
data and is unaffected when the FREEDM 84A1024L device is
programmed to overwrite RXDATA[7:0] with status information
when erred packets are received.
RMOD is tristated when the FREEDM 84A1024L device is not
selected via the RENB signal.
RMOD is updated on the rising edge of RXCLK.
Any-PHY Level 3 Mode:
RMOD is not used. The last valid byte of data on
RXDATA[7:0] is sampled when REOP is sampled high.
RMOD is tristated when the FREEDM 84A1024L is operating
in Any-PHY level 3 mode.
The receive error signal (RERR) indicates that the current
packet is erred and should be discarded.
RERR is updated on the rising edge of RXCLK.
The receive error signal (RERR) indicates that the current
packet is erred and should be discarded. When RXDATA[15:0]
(Any-PHY Level 2 mode) or RXDATA[7:0] (Any-PHY Level 3
mode) does not contain the last byte of a packet (REOP set
low), RERR is set low. When RERR is set high and REOP is
set high, the current packet is erred. When RERR is set low
and REOP is set high, the current packet is not erred.
The FREEDM 84A1024L may be programmed to overwrite
RXDATA[7:0] of the final word of each packet transfer (REOP
set high) with the status of packet reception when that packet
is erred (RERR is high).
Any-PHY Level 2 Mode:
Released
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