Released
Datasheet
PM73487 QRT
PMC-Sierra, Inc.
PMC-980618
Issue 3
622 Mbps ATM Traffic Management Device
7.2.14 TX_UT_STAT
TX_UT_STAT is a register that reflects the current polling status of the PHY device requests for
service. The register is used as an input to the transmit UTOPIA watchdog register (refer to
“TX_UT_WD_ALIVE” on page 121).
Address: 13h (4Ch byte)
Type: Read-only
Format: Refer to the following table.
Field (Bits)
Description
Not used
(31)
Will be set to 0. Mask for future software compatibility.
TX_UT_STAT
(30)
The PHY device at address 30 is ready to receive a cell.
The PHY device at address 29 is ready to receive a cell.
TX_UT_STAT
(29)
.
.
.
.
.
.
TX_UT_STAT
(0)
The PHY device at address 0 is ready to receive a cell.
7.2.15 TX_UT_WD_ALIVE
The TX_UT_WD_ALIVE bits in this register indicate a given PHY device has indicated it would
accept a cell within the WD_TIME (refer to “WD_TIME” on page 118) when polled. Cells bound
for PHY devices that fail this test are flushed in the background.
Address: 14h (50h byte)
Type: Read/Write
Format: Refer to the following table.
Field (Bits)
Description
Not used
(31)
Write with a 0 to maintain software compatibility with future versions.
TX_UT_WD_ALIVE
(30)
1
0
The PHY device at address 30 has responded to polling with an assertion of
TATM_CLAV(3:0) for a period less than WD_TIME.
The PHY device at address 30 has not responded to a poll with an assertion
of TATM_CLAV(3:0) for a period longer than WD_TIME. PHY device 30
has expired, therefore drain remaining cells intended for PHY device 30 at
lowest priority.
TX_UT_WD_ALIVE
(29)
1
0
The PHY device at address 29 has responded to polling with an assertion of
TATM_CLAV(3:0) for a period less than WD_TIME.
The PHY device at address 29 has not responded to a poll with an assertion
of TATM_CLAV(3:0) for a period longer than WD_TIME. PHY device 29
has expired, therefore drain remaining cells intended for PHY device 29 at
lowest priority.
TX_UT_WD_ALIVE
(28:1)
.
.
.
121
PMC [ PMC-SIERRA, INC ]
