Product Info

RTL8822CE RTL8822CU RTL8822CS COB TSSI MP FLOW
©2019 Realtek Semiconductor Corp.
80
REPORT_MP_TXCAL_IN
FO
22
TxGainK
Flatness(LSB)
Flatness
(MSB)
TXPathLos
s
REPORT_FLASH_CONFI
G
23
REPORT_XTALBOUNDA
RY
24
DIV_int
DIV_frac(LSB)
DIV_frac
(MSB)
REPORT_XTALNORMA
L
25
NewXtalIndex
7.2. Bluetooth eFuse definition about calibrates of Tx power
First, view the eFuse (config file) content about setting of power index and channel adjust
value. Normal driver will load this value in initial step. So this value must be well-calibrated and
filled on correct eFuse location. Please check next page for detail introduction of Tx power setting
of efuse (config file).
Efuse Offset
Explanation
0x278[1]
Tx gain K valid bit*
0x278[2]
Flatness K valid bit**
0x279[7:0]
TX Gain K
0x27A[7:0]~0x27B[7:0]
Flatness K
0x280[7:0]
1M Max TX Power
#
0x281[7:0]
2M Max TX Power
#
0x282[7:0]
3M Max TX Power
#
0x283[7:0]
LE 1M Max TX Power
#
0x28C[7:0]
Tmeter module K
Table 28: BT Tx gain index offset in eFuse
*After TX gain K flow please remember to enable this bit which 0x278 will be 02
**After TX flatness K flow please remember to enable this bit which 0x278 will be 04
Note: If both TX gain K & TX flatness K are been done please enable both valid bits which 0x278 will be 06
#
Please note that RTK adapt max Tx setting for 8822C series combo chip in different certification (FCC, CE, etc.) in order
to confirm radio characteristic of our work could still pass compliance rule under extreme condition. For general purpose,
Tx value for MP is set to 5 dBm to obtain the best power consumption performance and user experience. Therefore,
customer who uses our module may need to provide permissive change files during certification of your own product for
different Tx power setting. Here listed the main power restraint due to CE compliance, EIRP should less than 10 dBm.