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ManualsBrandsTEXAS INSTRUMENTS ManualsData collecting ICsData acquisition IC - AD converter (ADC) Internal TQFP 48
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LRCK
BCK
DATA
LRCK
BCK
DATA
LRCK
BCK
LRCK
BCK
LRCK
BCK
LRCK
BCK
LRCK
BCK
LRCK
BCK
LRCK
BCK
LRCK
BCK
DATA DATA DATA DATA
DATA DATA DATA DATA
SUB0
SUB1
SUB0
SUB1
SUB0
SUB1
SUB0
SUB1
SUB0
SUB1
SUB0
SUB1
SUB0
SUB1
SUB0
SUB1
PCM4222
(sub-frame 0)
Slave
PCM4222
(sub-frame 1)
Slave
PCM4222
(sub-frame 2)
Slave
PCM4222
(sub-frame 3)
Slave
PCM4222
(sub-frame 0)
Master
PCM4222
(sub-frame 1)
Slave
PCM4222
(sub-frame 2)
Slave
PCM4222
(sub-frame 3)
Slave
LO
LO
HI
LO
LO
HI
HI
HI
LO
LO
HI
LO
LO
HI
LRCK
BCK
DATA
LRCK
BCK
DATA
LRCK
BCK
LRCK
BCK
LRCK
BCK
LRCK
BCK
LRCK
BCK
LRCK
BCK
LRCK
BCK
LRCK
BCK
DATA DATA DATA DATA
DATA DATA DATA DATA
SUB0
SUB1
SUB0
SUB1
SUB0
SUB1
SUB0
SUB1
SUB0
SUB1
SUB0
SUB1
SUB0
SUB1
SUB0
SUB1
PCM4222
(sub-frame 0)
Slave
PCM4222
(sub-frame 1)
Slave
PCM4222
(sub-frame 2)
Slave
PCM4222
(sub-frame 3)
Slave
PCM4222
(sub-frame 0)
Master
PCM4222
(sub-frame 1)
Slave
PCM4222
(sub-frame 2)
Slave
PCM4222
(sub-frame 3)
Slave
LO
LO
HI
LO
LO
HI
HI
HI
HI
HI
HI
HI
LO
LO
HI
LO
LO
HI
(a)AlldevicesareSlaves.
(b)OnedeviceistheMasterwhileallotherdevicesareSlaves.
NormalMode
LRCK
L
Sub-frame0 Sub-frame1
OneFrame,1/f
S
Sub-frame2 Sub-frame3
R L R L R L R
L
Sub-frame0 Sub-frame1
OneFrame,1/f
S
OneFrame,1/f
S
Sub-frame0 Sub-frame1
R L R L R L R
L
OneFrame OneFrame
1/f
S
1/f
S
1/f
S
1/f
S
OneFrame OneFrame
R L R L R L R
DATA
LRCK
DATA
LRCK
DATA
DoubleSpeedMode
QuadSpeedMode
PCM4222
SBAS399A – OCTOBER 2006 – REVISED MARCH 2007
Figure 43. TDM Mode Interface Connections (PCM Normal Mode Shown)
Each L or R channel time slot is 32-bits long, with 24-bit data Left-Justified in the time slot. Audio data is MSB first.
Sub-frame assignments for each PCM4222 device are selected by the corresponding SUB0 and SUB1 pin settings.
Figure 44. TDM Data Formats: Slave Mode
23
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