Usb String Descriptor Index (0X1D6H~0X1Dfh); 5G Temperature Compensation Enable/Disable (0X36,0X43,0X55) - MEDIATEK MT7612 Manual

2.35 USB String Descriptor Index (0x1D6h~0x1DFh)

Offset
1D6h
1D7h~1DEh
2.36 2G/5G Temperature Compensation Enable/Disable
(0x36,0x43,0x55)
There are 3 EEPROM setting needs to be configured for temperature compensation. Main purpose is
for ePAiPA RFCR switch, BB CR switch, RF re-cal of IC performance variation over temperature.
1. 0x36 bit1 :
i. 1: enable TC for TX PA power setting
ii. 0 : disable TC for TX PA power setting
2. 0x43 bit3 :
i. 0 :enable TC for BB/RF CR switch
ii. 1 : disable TC for BB/RF CR switch setting
3. 0x55 bit7
i. 1: enable temperature sensor value
ii. 0 : disable temperature sensor value
4. 0x55 bit[6:0]
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Field
USB descriptor string index (high byte part) : It's the string start address high
7:0
byte part , for example, the string index start address is 0x0200, the 0x02 is the
string index head, the low byte will indicate on 0x1D7h~0x1DFh
The USB string index low byte part, it concates with 0x1D6h to indicate the
string address in EEPROM.
It provides 8 string index fields. Customer can update USB string on
EEPROM's empty field (0x140~0x1BF is prefered field) and modify the string
start address on these string descriptor index.
For example :
At EEPROM 0x120 has one String ("802.11n WLAN") , it should be:
1E 30 38 00 30 00 32 00 2E 00 31 00 31 00 20 00
7:0
6E 00 20 00 57 00 4C 00 41 00 4E 00
"1E" is the string length, "30" is the String type , then each two bytes indicate
the unitcode of each character.
And please update 0x1D6h = 0x01 , 0x1D7h = 0x40 to indicate the string
index.
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This document contains information that is proprietary to MediaTek Inc.
EEPROM Content
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Description
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