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PGMT7620_V.1.0_040503
Page 213 of 523
MT7620 PROGRAMMING GUIDE
Integrated 802.11n MAC/BBP and 2.4 GHz RF/FEM Router-on-a-Chip
Bits
Type
Name
Description
Initial Value
15
RW
TSO_ILLEGAL
Enables the TCP Segmentation Offload (TSO)
Illegal packet interrupt. This interrupt asserts
when the packet format is not supported by
TSO (e.g., not TSO or IPv4/v6) but when TSO is
enabled for that packet.
0x0
14
-
-
Reserved
0x0
13:8
-
-
Reserved
0x0
7
RW
PDMA_RXRING_FC
Enables the PDMA 2 Rx Ring Flow Control
Interrupt. This interrupt asserts when
any Rx ring is congested and pauses the receive
queue on the switch.
0x0
6
RW
PDMA_TXRING_FC
Enables the PDMA 4 Tx Ring Flow Control
Interrupt. This interrupt asserts when the
transmitted queue on the switch is congested
and pauses the PDMA Tx ring.
0x0
5
RW
GE1_OTHER_DROP
Enables the GE1 Packet Dropped for Other
Reason interrupt. This interrupt asserts when
GE1 drops a packet due to other reasons (e.g.
too short, too long, FIFO overflow, checksum
error, etc.)
0x0
4
RW
GE1_CRC_DROP
Enables the GE1 CRC Error Dropped Packet
interrupt. This interrupt asserts when the GE1
discards a packet due to CRC error.
0x0
3
RW
CPU_P1_FC
Enables the CPU Port1 (GDM) Flow Control
Interrupt. This interrupt asserts when flow
control is asserted on port 1 (GDM).
0x0
2
RW
CPU_P0_FC
Enables the CPU Port0 (CDM) Flow Control
Interrupt. This interrupt asserts when flow
control is asserted on port 0 (CDM).
0x0
1
RW
CPU_BUF_DROP
Enables the CPU PSE Buffer Sharing Packet Drop
Interrupt. This interrupt asserts when the CPU
PSE discards a packet due to buffer sharing
limitations (flow control).
0x0
0
RW
CPU_FQ_EMPTY
Enables the CPU PSE Free Queue Empty
Threshold Reached Interrupt. This interrupt
asserts when the remaining buffers on the free
queue are lower than the empty threshold and
a forced drop condition has occurred.
0x0
NOTE:
0: Disable the interrupt.
1: Enable the interrupt.
245. FOE_TS_T: Time Stamp (offset: 0x0010)
Bits
Type
Name
Description
Initial Value
31:24
-
-
Reserved
0x0

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