SBAS052 Datasheet, PDF (6/17 Pages) Texas Instruments – Stereo Audio DIGITAL-TO-ANALOG CONVERTER MPEG2/AC-3 COMPATIBLE

Not Recommended For New Designs
LRCIN (pin 4)
BCKIN (pin 6)
AUDIO DATA WORD = 16-BIT
DIN (pin 5) 14 15 16
L_ch
123
AUDIO DATA WORD = 20-BIT
DIN (pin 5) 18 19 20
123
MSB
AUDIO DATA WORD = 24-BIT
DIN (pin 5)
23 24
MSB
123
MSB
FIGURE 1. “Normal” Data Input Timing.
1/fs
14 15 16
LSB
18 19 20
LSB
22 23 24
LSB
R_ch
123
123
MSB
MSB
123
MSB
14 15 16
LSB
18 19 20
LSB
22 23 24
LSB
LRCIN (pin 4)
BCKIN (pin 6)
AUDIO DATA WORD = 16-BIT
DIN (pin 5)
123
AUDIO DATA WORD = 20-BIT
DIN (pin 5)
MSB
123
AUDIO DATA WORD = 24-BIT
DIN (pin 5)
MSB
123
MSB
FIGURE 2. “I²S” Data Input Timing.
L_ch
14 15 16
LSB
18 19 20
LSB
22 23 24
LSB
1/fs
123
MSB
123
MSB
123
MSB
R_ch
14 15 16
LSB
18 19 20
LSB
22 23 24
LSB
12
12
12
LRCKIN
t_BCH
t_BCL
t_LB
BCKIN
t_BCY
t_BL
DIN
t_DS
t_DH
BCKIN Pulse Cycle Time
BCKIN Pulse Width High
BCKIN Pulse Width Low
BCKIN Rising Edge to LRCIN Edge
LRCIN Edge to BCKIN Rising Edge
DIN Set-up Time
DIN Hold Time
: t_BCY
: t_BCH
: t_BCL
: t_BL
: t_LB
: t_DS
: t_DH
: 100ns (min)
: 50ns (min)
: 50ns (min)
: 30ns (min)
: 30ns (min)
: 30ns (min)
: 30ns (min)
FIGURE 3. Audio Data Input Timing.
®
PCM1720
6
1.4V
1.4V
1.4V