Datasheet

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SLES101A – DECEMBER 2003 – REVISED NOVEMBER 2006
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DSD MODE CONFIGURATION AND FUNCTION CONTROLS
Configuration for the DSD Interface Mode
The DSD interface mode is selected by setting DSD = 1 (register 20, B5).
B15 B14 B13 B12 B11 B10 B9 B8 B7 B6 B5 B4 B3 B2 B1 B0
Register 16 R/W 0 0 1 0 0 0 0 – – – – – – – –
Register 17 R/W 0 0 1 0 0 0 1 – – – – – – – –
Register 18 R/W 0 0 1 0 0 1 0 – – – – DMF1 DMF0 – –
Register 19 R/W 0 0 1 0 0 1 1 REV – – OPE – – – –
Register 20 R/W 0 0 1 0 1 0 0 – SRST 1 – MONO CHSL OS1 OS0
Register 21 R 0 0 1 0 1 0 1 – – – – – DZ1 DZ0 –
Register 22 R 0 0 1 0 1 1 0 – – – – – – ZFGR ZFGL
NOTE
:
–: Function is disabled. No operation even if data bit is set
DMF[1:0]: Analog FIR Performance Selection
Default value: 00
DMF[1:0] Analog-FIR Performance Select
00 FIR-1 (default)
01 FIR-2
10 FIR-3
11 FIR-4
Plots for the four analog FIR filter responses are shown in the ANALOG FIR FILTER PERFORMANCE IN DSD MODE
section of this data sheet.
OS[1:0]: Analog-FIR Operation-Speed Selection
Default value: 00
OS[1:0] Operation Speed Select
00 f
DBCK
(default)
01 f
DBCK
/2
10 Reserved
11 f
DBCK
/4
The OS bit in the DSD mode is used to select the operating rate of the analog FIR. The OS bits must be set before setting
the DSD bit to 1.