Product Info

RTL8822CE RTL8822CU RTL8822CS COB TSSI MP FLOW
©2019 Realtek Semiconductor Corp.
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7.3. Tx flatness K mapping table
All flatness value can map to below table:
Txpower_flat_diff_value
Efuse Flatness value
6
0x6
5
0x5
4
0x4
3
0x3
2
0x2
1
0x1
0
0x0
-1
0xF
-2
0xE
-3
0xD
-4
0xC
-5
0xB
-6
0xA
The Txpower_flatness value is defined as :
Bits
Define
0~3
Low Channel Flatness
CH 0~21
4~7
MidLow Channel Flatness
CH 22~43
8~11
MidHigh Channel, Flatness
CH 44~61
12~15
High Channl Flatness
CH 62~78
For example :
Channel
Measure Tx
power(dBm)
Txpower_flat_diff
calculate
Txpower_flat_diff
Value
Flatness value
10
-0.6
floor((0-(-0.6))*2)
1
0x1
0xDE01
32
-0.3
floor((0-(-0.3))*2)
0
0x0
52
0.7
floor((0-(0.7))*2)
-2
0xE
70
1.2
floor((0-(1.2))*2)
-3
0xD
Note: Efuse offset 0x27A[7:0] = 0x01 , Efuse offset 0x27B[7:0] = 0xDE