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4.8 Analog Control Register (40h)
The analog control register (ACR) allows control of de-emphasis, selection of the analog input channel to the ADC,
and analog power down.
An I
2
C master is required to write the appropriate command into the ACR. The ACR subaddress is 40h.
Bit 7 6 5 4 3 2 1 0
Type R/W R/W R/W R/W R/W R/W R/W R/W
Default 0 0 0 0 0 0 0 0
Table 4−1. Analog Control Register Description
BIT FIELD NAME TYPE DESCRIPTION
7 Reserved R/W Reset to 0
6 Reserved R/W Reset to 0
5−4 Reserved R/W Reserved. Bits 5 and 4 return 0s when read.
3−2 DM(1−0) R/W De-emphasis control
00 = De-emphasis off (initial condition after reset)
01 = 48 kHz sample rate de-emphasis selected
10 = 44.1 kHz sample rate de-emphasis selected
11 = Reserved
1 INP R/W Analog input select
0 = LINA and RINA selected (initial condition after reset)
1 = LINB and RINB selected
0 APD R/W Analog power down
0 = Normal operation (initial condition after reset)
1 = Power down