GC5018 Datasheet, PDF (94/115 Pages) Texas Instruments – 8-CHANNEL WIDEBAND RECEIVER

GC5018
8-CHANNEL WIDEBAND RECEIVER
SLWS169 – MAY 2005
www.ti.com
phase_add_b(31:16) : This 32 bit word is used to control the frequency of the NCO. This value is added
to the frequency accumulator every clock cycle (B channel in CDMA mode).
4.4.5.13 PHASE_OFFSETA Register
Register name: PHASE_OFFSETA
BIT 15
0
0
BIT 7
0
0
Address: 0xC
0
DOUBLE BUFFERED, REQUIRES SYNC FOR LOADING
BIT 8
phase_offset_a(15:8)
0
0
0
0
0
phase_offset_a(7:0)
0
0
0
0
BIT 0
0
0
phase_offset_a(15:0) : This is the fixed phase offset added to the output of the frequency accumulator
for sinusoid generation in the NCO. (UMTS mode and A channel in CDMA mode).
4.4.5.14 PHASE_OFFSETB Register
Register name: PHASE_OFFSETB
BIT 15
0
0
BIT 7
0
0
Address: 0xD
0
DOUBLE BUFFERED, REQUIRES SYNC FOR LOADING
BIT 8
phase_offset_b(15:8)
0
0
0
0
0
phase_offset_b(7:0)
0
0
0
0
BIT 0
0
0
phase_offset_b(15:0) : This is the fixed phase offset added to the output of the frequency accumulator
for sinusoid generation in the NCO. (B channel in CDMA mode)
4.4.5.15 CONFIG1 Register
Register name: CONFIG1
BIT 15
dither_ena
dither_mask(1:0)
0
BIT 7
unused
0
0
unused
0
0
unused
0
Address: 0xE
pmeter_ sync_
disable
0
unused
0
ddc_ena
0
unused
0
muxed _data
mixer_gain
BIT 8
mpu_ram_read
0
0
zero_ qsample
0
mux_pos
0
0
BIT 0
mux_factor
0
dither_ena : This bit controls whether dither is turned on(1) or off(0).
dither_mask(1) : This bit controls the MASKing of the dither word’s MSB. (1= MASKed, 0=used in dither
word)
dither_mask(0) : This bit controls the MASKing of the dither word’s MSB-1. (1= MASKed, 0=used in
dither word)
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GC5018 GENERAL CONTROL