PCM3793A
PCM3794A
www.ti.com
SLAS529A–JANUARY 2007–REVISED FEBRUARY 2007
(a) Right-Justified Data Format; L-Channel = HIGH, R-Channel = LOW
1/f
S
LRCK
BCK
L-Channel
R-Channel
(= 32 f , 48 f or 64 f
)
S
S
S,
16-Bit Right-Justified
DIN/DOUT 14 15 16
1
2
3
14 15 16
1
2
3
14 15 16
LSB
MSB
LSB
1/f
MSB
2
(b) I S Data Format; L-Channel = LOW, R-Channel = HIGH
S
LRCK
BCK
L-Channel
R-Channel
(= 32 f , 48 f or 64 f )
S
S
S
1
2
3
14 15 16
LSB
1
2
3
14 15 16
LSB
1
2
DIN/DOUT
MSB
MSB
(c) Left-Justified Data Format; L-Channel = HIGH, R-Channel = LOW
1/f
S
LRCK
L-Channel
R-Channel
BCK
(= 32 f , 48 f or 64 f
)
S
S
S,
DIN/DOUT
1
2
3
14 15 16
LSB
1
2
3
14 15 16
LSB
1
1
1
2
2
2
MSB
MSB
(d) Burst BCK Interface Format at Master Mode; L-Channel = HIGH, R-Channel = LOW
1/f
S
LRCK
L-Channel
R-Channel
BCK
(= 32 f , 48 f or 64 f
)
S
S
S,
DIN/DOUT
1
2
3
14 15 16
1
2
3
14 15 16
LSB
MSB
LSB
MSB
(e) DSP Format
1/f
S
LRCK
BCK
(= 32 f , 48 f 64 f , 128 f or 256 f )
S, S
S
S
S
DIN/DOUT
1
2
3
14 15 16
LSB
1
2
3
14 15 16
LSB
MSB
MSB
T0009-07
NOTE: All audio interface formats support BCK = 64 fS in master mode (register 69, MSTR = 1). When setting the
multisampling rate, the fS of BCK is set to half the rate of the DSP operation frequency.
Figure 29. Audio Data Input and Output Formats
26
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