AK4118A Datasheet, PDF (50/56 Pages) Asahi Kasei Microsystems – High Feature 192kHz 24bit Digital Audio I/F Transceiver

[AK4118A]
STC & DAT Detect
Addr
Register Name
26H STC & DAT Detect
R/W
Default
D7
D6
D5
D4
D3
D2
D1
D0
0
0
0
0
0
0
STC DAT
RD
RD
RD
RD
RD
RD
RD
RD
0
0
0
0
0
0
0
0
DAT: DAT Start ID Detect
0: No detect
1: Detect
DAT bit is initialized when Addr= 26H is READ.
STC: Change Detection of Sampling Frequency and pre-emphasis information
0: No detect
1: Detect
When FS3-0 bits or PEM bit is changed, STC bit goes to “1”. STC bit is initialized when
Addr=26H is READ.
■ Burst Preambles in non-PCM Bitstreams
sub-frame of IEC60958
0
34
78
preamble
Aux.
11 12
LSB
0
16 bits of bitstream
27 28 29 30 31
MSB V U C P
15
Pa Pb Pc Pd
Burst_payload
stuffing
repetition time of the burst
Figure 44. Data structure in IEC60958
Preamble word
Pa
Pb
Pc
Pd
Length of field
Contents
16 bits
sync word 1
16 bits
sync word 2
16 bits
Burst info
16 bits
Length code
Table 22. Burst preamble words
Value
0xF872
0x4E1F
see Table 23
numbers of bits
MS1130-E-02
- 50 -
2009/12