GC5316 datasheet(56/75 Pages) TI

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GC5316

SLWS154A − JANUARY 2004 − REVISED MARCH 2004

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cic_m2_ena_a

0100

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.

cic_m2_ena_b

0100

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.

tadj_offset_coarse_a

0100

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.

tadj_offset_coarse_b

0100

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.

tadj_offset_fine_a

0100

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.

tadj_offset_fine_b

0100

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.

tadj_interp_decim

0100

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.

phase_add_a_lsb

0100

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.

phase_add_a_msb

0100

Upper 16 bits of the above 32-bit word.

phase_add_b_lsb

0100

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.

phase_add_b_msb

0100

Upper 16 bits of the above 32-bit word.

phase_offset_a

0100

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)

phase_offset_b

0100

This is the fixed phase offset added to the output

of the frequency accumulator for sinusoid

generation in the NCO for CDMA B channel.

dither_ena

0100

This bit controls whether or not dither is turned

on(1) or off(0).

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