Datasheet

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SLES100A − 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 to1.