GC5018_06 Datasheet, PDF (111/134 Pages) Texas Instruments – 8-CHANNEL WIDEBAND RECEIVER

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4.4.5.21 AGC_GAINA Register
GC5018
8-CHANNEL WIDEBAND RECEIVER
SLWS169A – MAY 2005 – REVISED NOVEMBER 2005
Register name: AGC_GAINA
BIT 15
0
0
BIT 7
0
0
Page: 0x0%00
where:
% = 2×(DDC channel #)+1
Address: 0x14 DOUBLE BUFFERED, REQUIRES SYNC FOR
LOADING
BIT 8
agc_gaina(15:8)
0
0
0
0
0
0
BIT 0
agc_gaina(7:0)
0
0
0
0
0
0
agc_gaina(15:0) : This is the lower 16 bits of the total 24 bits of programmable gain. The gain value is
always positive with the upper 12 bits being the integer value and the lower 12 bits being the
fractional. This gain value is used for all UMTS operations and for A channel data when in
CDMA mode. A 24-bit value of 00000000001.000000000000 is unity gain.
4.4.5.22 AGC_GAINB Register
Register name: AGC_GAINB
BIT 15
0
0
BIT 7
0
0
Page: 0x0%00
where:
% = 2×(DDC channel #)+1
Address: 0x15 DOUBLE BUFFERED, REQUIRES SYNC FOR
LOADING
BIT 8
agc_gainb(15:8)
0
0
0
0
0
0
BIT 0
agc_gainb(7:0)
0
0
0
0
0
0
agc_gainb(15:0) : This is the lower 16 of the total of 24 bit of programmable gain. The gain value is
always positive with the upper 12 bits being the integer value and the lower 12 bits being the
fractional. This gain value is used for B channel data when in CDMA. A 24-bit value of
00000000001.000000000000 is unity gain.
GC5018 GENERAL CONTROL 111