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DS33Z41 Quad IMUX Ethernet Mapper
122 of 167
Register Name:
SU.QRIE
Register Description:
Receive Queue Cross Threshold Enable
Register Address:
15Ch
Bit
# 7 6 5 4 3 2 1 0
Name — — — —
RFOVFIE
RQVFIE
RQLTIE
RQHTIE
Default
0 0 0 0 0 0 0 0
Bit 3: Receive FIFO Overflow Interrupt Enable (RFOVFIE).
If this bit is set, the interrupt is enabled for
RFOVFLS.
Bit 2: Receive Queue Overflow Interrupt Enable (RQVFIE).
If this bit is set, the interrupt is enabled for
RQOVFLS.
Bit 1: Receive Queue Crosses Low Threshold Interrupt Enable (RQLTIE).
If this bit is set, the watermark
interrupt is enabled for RQLTS.
Bit 0: Receive Queue Crosses High Threshold Interrupt Enable (RQHTIE).
If this bit is set, the watermark
interrupt is enabled for RQHTS.
Register Name:
SU.QCRLS
Register Description:
Queue Cross Threshold Latched Status
Register Address:
15Dh
Bit
#
7
6
5
4 3 2 1 0
Name — — — —
RFOVFLS
RQOVFLS
RQHTLS
RQLTLS
Default
—
—
—
— — — — —
Bit 3: Receive FIFO Overflow latched Status (RFOVFLS).
This bit is set if the receive FIFO overflows for the
data to be transmitted from the MAC to the SDRAM.
Bit 2: Receive Queue Overflow Latched Status (RQOVFLS).
This bit is set if the receive queue has
overflowed. This register is cleared after a read.
Bit 1: Receive Queue for Connection Crossed High Threshold Latched Status (RQHTLS).
This bit is set if
the receive queue crosses the high watermark. This register is cleared after a read.
Bit 0: Receive Queue for Connection Crossed Low Threshold Latched Status (RQLTLS).
This bit is set if the
receive queue crosses the low watermark. This register is cleared after a read.
Note the bit order differences in the high/low threshold indications in SU.QCRLS and the interrupt enables in
SU.QRIE.