MEDIATEK Ralink MT7620 - Page 129

PGMT7620_V.1.0_040503
Page 129 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
4:0
RW
CHEN_DLYVAL
Delay Count Value
The delay error =
CLK_PERIOD * (SYNC_DELAY + SYNC_DELTA +
(DLYCNT_CFG) + 1)
For example,
DLYCNT_CFG = 4,
(SYNC_DELAY is always fixed to 4)
Final Delay
= CLK_PERIOD * (2 + (-1/0/+1) + (4) + 1)
= CLK_PERIOD * (6/7/8)= CLK_PERIOD * (6 to 8)
= 25 ns to 33.3 ns
NOTE:
Period is 1/240 MHz = 4.1667 ns in MT7620.
0x2
156. CH0_FIFO: (offset: 0x0080)
Bits
Type
Name
Description
Initial Value
31:0
RW
CH0_FIFO
Channel 0 FIFO access point
0x0
157. CH1_FIFO: (offset: 0x0084)
Bits
Type
Name
Description
Initial Value
31:0
RW
CH1_FIFO
Channel 1 FIFO access point
0x0
158. CH2_FIFO: (offset: 0x0088)
Bits
Type
Name
Description
Initial Value
31:0
RW
CH2_FIFO
Channel 2 FIFO access point
0x0
159. CH3_FIFO: (offset: 0x008C)
Bits
Type
Name
Description
Initial Value
31:0
RW
CH3_FIFO
Channel 3 FIFO access point
0x0