lm4935rlx National Semiconductor Corporation, lm4935rlx Datasheet - Page 59

• Manufacturer Part Number: lm4935rlx
• Description: Audio Sub-system With Dual-mode Stereo Headphone And Mono High Efficiency Loudspeaker Amplifiers And Multi-purpose Adc
• Manufacturer: National Semiconductor Corporation

12.0 Status & Control Registers
12.35 SAR CHANNELS 2 & 3 CONFIGURATION REGISTER
This register is used to control channel 2 and 3 of the SAR system. (Note 31)
Bits
2:0
3
4
5
SLOT_2_ENB
SLOT_3_ENB
SLOT_2_VBB
SLOT_2_FS
Field
TABLE 34. SAR_SLOT23 (0x1Ch)
Programs the sampling frequency of SAR channels 2 and 3:
If set then D_V
into SAR slot 2 which also activates the SAR ADC.
If set then A_V
SAR ADC.
If set then BB_V
D_V
DD
(Continued)
.
SLOT_2_FS
000
001
010
100
101
59
011
110
111
DD
DD
DD
2
2
2
2
2
2
2
2
/ 2 is sampled into SAR slot 3 which also activates the
/ 2 or BB_V
input is used as input to SAR slot 2 rather than the
DD
Description
(depending on SLOT2_V
Sample Rate
13.888 kHz
3.472 kHz
0.868 kHz
(point A)
217 Hz
54 Hz
14 Hz
4 Hz
1 Hz
BB
@
) is sampled
12.000 MHz
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