MEDIATEK Ralink MT7620 - Page 210

PGMT7620_V.1.0_040503
Page 210 of 523
MT7620 PROGRAMMING GUIDE
Integrated 802.11n MAC/BBP and 2.4 GHz RF/FEM Router-on-a-Chip
2.19.8.2 Register Descriptions
241. FE_GLO_CFG: Frame Engine Global Configuration (offset: 0x0000)
Bits
Type
Name
Description
Initial Value
31:16
RW
EXT_VLAN
Extended VLAN protocol ID
0x8100
15:8
-
-
Reserved
0x7D
7:4
RW
L2_SPACE
L2 Space
(unit: 8 bytes)
0xB
3:1
-
-
Reserved
0x0
0
RW
RATE_MINUS
Minus byte counts for incoming frame
1’b0: A specific byte count is added to the
frame length according to
FOE_TS_T.ADD_RATE_BYTE.
1’b1: A specific byte count is subtracted from
the incoming frame length.
0x0
242. FE_RST_GLO: Frame Engine Global Reset (offset: 0x0004)
Bits
Type
Name
Description
Initial Value
31:24
RC
PPE_DROP_CNT
PPE Flow Control Drop Packet Count
Counts the number of packets dropped by the
PSE when packets go through the PPE port.
0x0
23:16
RC
CPU_DROP_CNT
CPU Flow Control Drop Packet Count
Counts the number of packets dropped by the
PSE when packets go through the CPU port.
0x0
15:1
-
-
Reserved
0x0
0
RW
PSE_RESET
Resets the Packet Switch Engine (PSE)
0: Disassert reset
1: Reset
0x0
243. FE_INT_STATUS: Frame Engine Interrupt Status (offset: 0x0008)
Bits
Type
Name
Description
Initial Value
31
W1C
CNT_PPE_AF
PPE Counter Table Almost Full Interrupt
Asserts when the PPE counter table is almost
full.
0x0
30
-
-
Reserved
0x0
29
W1C
CNT_GDM1_AF
GDMA1 Counter Table Almost Full Interrupt
Asserts when the GDMA1 counter table is
almost full.
0x0
28:22
-
-
Reserved
0x0
21
W1C
PPE_OTHER_DROP
PPE GE1 Packet Dropped for Other Reason
Interrupt
Asserts when GE1 drops a packet due to other
reasons (e.g. too short, too long, FIFO overflow,
checksum error, etc.)
0x0