Datasheet

PCM9211
www.ti.com
SBAS495 JUNE 2010
Register 23h, DIR Initial Settings 3/3
(Address: 23h, Write and Read)
DATA B7 B6 B5 B4 B3 B2 B1 B0
Reg Name RSV RSV XTIWT1 XTIWT0 PRTPRO1 PRTPRO0 ERRWT1 ERRWT0
Default Value 0 0 0 0 0 1 0 0
Memo
XTIWT[1:0]: Crystal OSC, Oscillation Start-up Wait Time Setting
00: 25 ms
01: 50 ms
10: 100 ms
11: 200 ms
XTIWT is counted by the PLL generated clock.
These are the resulting values when the PLL is running with a free-run clock because of no S/PDIF input.
After these delay times, the Main Port source changes from DIR to ADC when DIR is unlocked.
PRTPRO[1:0]: Process for Parity Error Detection
00: No process
01: For PCM data only, an 8x continuous parity error is replaced by previous data and muted after ninth
parity error at EPARITY = 1 (default)
10: For PCM and non-PCM data, an 8x continuous parity error is replaced by previous data and muted
after ninth parity error at EPARITY = 1
11: Reserved (The definition of Non-PCM depends on the Non-PCM Definition Setting Register)
Validity flag, user bit, channel status, Non-PCM and DTS-CD detection should be refreshed by waiting
more than 192/f
S
without any parity error.
ERRWT[1:0]: ERROR Release Wait Time Setting
00: ERROR Release after 48 counts of preamble B (Default), 192 ms at f
S
= 48 kHz
01: ERROR Release after 12 counts of preamble B
10: ERROR Release after six counts of preamble B
11: ERROR Release after three counts of preamble B
These counts are only available when DIR is unlocked or DIR sampling frequency is changed or exceeds
limits defined by DIR Acceptable f
S
Range Setting and Mask registers.
CLKST also uses ERRWT to release.
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