GC5316_14 Datasheet, PDF (56/76 Pages) Texas Instruments – HIGH-DENSITY DIGITAL DOWNCONVERTER AND UPCONVERTER

GC5316
SLWS154A − JANUARY 2004 − REVISED MARCH 2004
cic_m2_ena_a
D 0100
0F
cic_m2_ena_b
D 0100
0F
tadj_offset_coarse_a D 0100
11
tadj_offset_coarse_b D 0100
11
tadj_offset_fine_a
D 0100
12
tadj_offset_fine_b
D 0100
12
tadj_interp_decim
U 0100
12
phase_add_a_lsb
C 0100
13
phase_add_a_msb C 0100
14
phase_add_b_lsb
C 0100
15
phase_add_b_msb C 0100
16
phase_offset_a
D 0100
17
phase_offset_b
D 0100
18
dither_ena
D 0100
19
56
10
6
4
6
10
6
4
6
13
3
10
3
7
3
0
16
0
16
0
16
0
16
0
16
0
16
15
1
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0
Programs the CDMA A channel (or UMTS
channel) CIC fir sections M value to 2 when set,
1 when cleared. cic_m2_ena_a(0) controls the M
value for the first comb section and
cic_m2_ena_a(5) controls the M value for the
last comb section.
0
Programs the CDMA B channel CIC fir sections
M value to 2 when set, 1 when cleared.
cic_m2_ena_b(0) controls the M value for the
first comb section and cic_m2_ena_b(5) controls
the M value for the last comb section.
0
This is part of the time delay adjust. This is the
coarse offset and is really an offset from the write
address in the delay ram. This value affects the
A channel if CDMA mode is being used, or the
UMTS channel. Each LSB is one more offset
between input to the course delay block and the
output of the course block.
0
This is part of the time delay adjust. This is the
coarse offset and is really an offset from the write
address in the delay ram. This value affects the
B channel if CDMA mode is being used. Each
LSB is one more offset between input to the
course delay block and the output of the course
block.
0
This is part of the time delay adjust. This is the
fine adjust value. It adjusts the time delay at the
clock rate. This value affects the A channel if
CDMA mode is being used, or the UMTS
channel.
0
This is part of the time delay adjust. This is the
fine adjust value. It adjusts the time delay at the
clock rate. This value affects the B channel if
CDMA mode is being used.
1
This is the decimation or interpolation value for
the fine time adjust block. Decimation or
interpolation can be from 1 to 8. This value
affects both the A and B channels if CDMA mode
is being used, or the UMTS channel.
0
This 32 bit word is used to control the frequency
of the NCO. Derived from the keyword freqa by
cmd5316.
(for CDMA channel A or UMTS channel). Lower
16 bits.
0
Upper 16 bits of the above 32-bit word.
0
This 32-bit word is used to control the frequency
of the NCO. Derived from the keyword freqb by
cmd5316.
(for CDMA channel B). Lower 16 bits.
0
Upper 16 bits of the above 32-bit word.
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)
0
This is the fixed phase offset added to the output
of the frequency accumulator for sinusoid
generation in the NCO for CDMA B channel.
0
This bit controls whether or not dither is turned
on(1) or off(0).