
6.8 Control Registers, Page 8: DAC Digital Filter Coefficients
TSC2117
Low-Power Audio Codec With Embedded miniDSP, Stereo Class-D
Speaker Amplifier, and Smart Four-Wire Touch-Screen Controller
SLAS550A – APRIL 2009 – REVISED JUNE 2009
www.ti.com
Table 6-3. Page-5 Registers (continued)
REGISTER
RESET
REGISTER NAME
NUMBER
VALUE
109
0000 0000
Coefficient C118(7:0) of ADC miniDSP
110
0000 0000
Coefficient C119(15:8) of ADC miniDSP
111
0000 0000
Coefficient C119(7:0) of ADC miniDSP
112
0000 0000
Coefficient C120(15:8) of ADC miniDSP
113
0000 0000
Coefficient C120(7:0) of ADC miniDSP
114
0000 0000
Coefficient C121(15:8) of ADC miniDSP
115
0000 0000
Coefficient C121(7:0) of ADC miniDSP
116
0000 0000
Coefficient C122(15:8) of ADC miniDSP
117
0000 0000
Coefficient C122(7:0) of ADC miniDSP
118
0000 0000
Coefficient C123(15:8) of ADC miniDSP
119
0000 0000
Coefficient C123(7:0) of ADC miniDSP
120
0000 0000
Coefficient C124(15:8) of ADC miniDSP
121
0000 0000
Coefficient C124(7:0) of ADC miniDSP
122
0000 0000
Coefficient C125(15:8) of ADC miniDSP
123
0000 0000
Coefficient C125(7:0) of ADC miniDSP
124
0000 0000
Coefficient C126(15:8) of ADC miniDSP
125
0000 0000
Coefficient C126(7:0) of ADC miniDSP
126
0000 0000
Coefficient C127(15:8) of ADC miniDSP
127
0000 0000
Coefficient C127(7:0) of ADC miniDSP
Default values shown for this page only become valid 100
s following a hardware or software reset.
Page 8/Register 0: Page Control Register
READ/
RESET
BIT
DESCRIPTION
WRITE
VALUE
D7–D0
R/W
0000 0000
0000 0000: Page 0 selected
0000 0001: Page 1 selected
...
1111 1110: Page 254 selected
1111 1111: Page 255 selected
The remaining page-8 registers are either reserved registers or are used for setting coefficients for the
various filters in the TSC2117. Reserved registers should not be written to.
The filter coefficient registers are arranged in pairs, with two adjacent 8-bit registers containing the 16-bit
coefficient for a single filter. The 16-bit integer contained in the MSB and LSB registers for a coefficient
are interpreted as a 2s-complement integer, with possible values ranging from –32,768 to 32,767. When
programming any coefficient value for a filter, the MSB register should always be written first, immediately
followed by the LSB register. Even if only the MSB or LSB portion of the coefficient changes, both
registers should be written in this sequence.
Table 6-4 is a list of the page-8 registers, excepting the
previously described register 0.
REGISTER MAP
154