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4. Use 0x54[3:0] for 5G temperature compensation lower limit for low temperature gain variation
5. Fill up 2/5G high/low limit with positive value, because lower limit is negative value in actual,
software will transfer lower limit to negative value in driver
For example:
If user would like to set upper limit to 4dB and lower limit -7dB in 5G band, fill up
0x54[7:4]=0x04 and 0x54[3:0]=0x07.
Please apply the same method in 2G according to 2G design.
6. If limit value is equal to 0x00 or 0xFF, temperature compensation will be disable
7. Unit of Temperature compensation limit: (dB)
If you use MTK HDK, you could use value as follows.
Offset
Field
3:0
0x53
7:4
3:0
0x54
7:4
Offset
Value
0x57
0x53
0x47
0x54
2.39 2G/5G ePAeLNA GPIO function (0x25, 0x35, 0x36)
1. 0x25[7:5]:
i.
010: Enable external RF component GPIO, like PAPE, LNA_EN, TRSW_P,
TRSW_N
ii.
000 : Disable external RF component GPIO, like PAPE, LNA_EN, TRSW_P,
TRSW_N
2. 0x35[1:0] : For 2.4 and 5GHz ePA setting
i.
00: 2.4G+5G external PA mode
ii.
01: 5G external PA mode
iii.
10: 2.4G external PA mode
iv.
11: disable mode
3. 0x36[2]: For 2.4GHz LNA setting
i.
0: Board without external LNA for 2.4GHz band must set this bit to 0.
MediaTek Confidential
Unauthorized reproduction or disclosure of this information in whole or in part is strictly prohibited.
2G TC gain low limit for NT to LT
2G TC gain high limit for NT to HT
5G TC gain low limit for NT to LT
5G TC gain high limit for NT to HT
Description
2G ePA Temperature Compensation limit
5G ePA Temperature Compensation limit
© 2013 MediaTek Inc.
This document contains information that is proprietary to MediaTek Inc.
Description
MT7612
EEPROM Content
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