VS1005g Datasheet
10 VS1005 PERIPHERALS AND REGISTERS
S/PDIF Frequencies
Fs
bit rate (Fs x 64) Minimum system clock rate (4 x bit rate)
22.05 kHz
24 kHz
32 kHz
44.1 kHz
48 kHz
96 kHz
1.4112 MHz
1.536 MHz
2.048 MHz
2.8224 MHz
3.072 MHz
6.144 MHz
12.288 MHz
5.6448 MHz
6.144 MHz
8.192 MHz
11.2896 MHz
12.288 MHz
24.576 MHz
49.152 MHz
192 kHz
Divider = Master clock / bit rate,
Divider > 3, even number.
SP_RX_LDATA, SP_RX_LDATA_LSB, SP_RX_RDATA and SP_RX_RDATA_LSB registers are
received data registers. S/PDIF data is 24 bits and it is divided in two registers. 16 MSB bits
are in registers SP_RX_LDATA and SP_RX_RDATA. The remaining 8 LSB bits are in registers
SP_RX_LDATA_LSB and SP_RX_RDATA_LSB.
SP_RX_STAT Bits
Name Bits type Description
SP_RX_STAT_CHSCH 15 r/w
Channel Status Change
SP_RX_STAT_FRCV 14
N/A 13
r
Frame receive
always zero
SP_RX_STAT_MISS 12 r/w
SP_RX_STAT_BERR 11 r/w
SP_RX_STAT_FERR 10 r/w
Missed reading previous frame
Block error, Z preamble every 192 frames failure
Frame error, Y preamble after (X or Z) failure
Subframe error, subframe /= 28 bits
Biphase coding error
Parity error, right channel
Parity error, left channel
Validity bit, right channel
User data bit, right channel
Channel status bit, right channel
Validity bit, left channel
User data bit, left channel
Channel status bit, left channel
SP_RX_STAT_SFERR
SP_RX_STAT_BIPHERR
SP_RX_STAT_RPERR
SP_RX_STAT_LPERR
SP_RX_STAT_RV
9
8
7
6
5
4
3
2
1
0
r/w
r/w
r/w
r/w
r
r
r
r
r
r
SP_RX_STAT_RU
SP_RX_STAT_RC
SP_RX_STAT_LV
SP_RX_STAT_LU
SP_RX_STAT_LC
SP_RX_STAT_CHSCH is a poll bit for channel status change interrupt.
SP_RX_STAT_FRCV is set by the peripheral when a frame is received, and cleared when
SP_RX_LDATA is read.
SP_RX_STAT_MISS bit is set if SP_RX_STAT_FRCV is set and new samples are written to
SP_RX_LDATA and SP_RX_RDATA. The time to read the samples is a few clock cycles less
than the sampling period.
SP_RX_STAT_BERR is set if the period between Z-preambles is not equal to 192 frames.
SP_RX_STAT_FERR is set if Y-preamble does not follow X-preamble or Z-preamble.
SP_RX_STAT_SFERR is set if the previous subframe has not been equal to 32 time slots.
Version: 0.2, 2012-03-16
74
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