GC1012B Datasheet, PDF (14/30 Pages) Texas Instruments – 3.3V DIGITAL TUNER CHIP

GC1012B 3.3V DIGITAL TUNER
SLWS138B
3.0 CONTROL REGISTERS
The chip is configured and controlled through the use of 16 eight bit control registers. These
registers are accessed for reading or writing using the control bus pins (CS, WE, RE, A[0:3], and C[0:7])
described in the previous section. The register names and their addresses are:
ADDRESS NAME
ADDRESS
NAME
0
FREQ byte 0
8
Output Mode
1
FREQ byte 1
9
Status
2
FREQ byte 2
10
One Shot
3
FREQ byte 3
11
Checksum
4
Sync mode
12
I-output byte 0
5
Filter mode
13
I-output byte 1
6
Gain Fraction
14
Q-output byte 0
7
Gain Exponent
15
Q-output byte 1
The following sections describe each of these registers. The type of each register bit is either R or
R/W indicating whether the bit is read only or read/write. All bits are active high.
Texas Instruments Incorporated
- 10 -
This document contains information which may be changed at any time without notice