AD1839A Analog Devices, AD1839A Datasheet - Page 17

• Manufacturer Part Number: AD1839A
• Description: 2 ADC, 6 DAC 96 Khz, 24-Bit Sigma Delta Codec
• Manufacturer: Analog Devices

Pin Name
ASDATA (O)
DSDATA1 (I)
DSDATA2 (I)/AAUXDATA1 (I)
DSDATA3 (I)/AAUXDATA2 (I)
AAUXDATA3 (I)
ALRCLK (O)
ABCLK (O)
DLRCLK (I)/AUXLRCLK (I/O)
DBCLK (I)/AUXBCLK (I/O)
DAUXDATA (O)
REV. A
(FROM AUX ADC NO. 1)
(FROM AUX ADC NO. 1)
(FROM AUX ADC NO. 1)
(FROM AUX ADC NO. 2)
(FROM AUX ADC NO. 3)
AAUXDATA2 (IN)
AAUXDATA1 (IN)
AAUXDATA3 (IN)
TDM (OUT)
LRCLK I
ASDATA1
DSDATA1
BCLK I
DSDATA1
TDM (IN)
ASDATA
FSTDM
BCLK
TDM
AUX
AUX
2
2
S
S
AUXBCLK FREQUENCY IS 64
MSB TDM
MSB TDM
1ST
1ST
CH
CH
INTERNAL
INTERNAL
DAC L1
ADC L1
32
32
I
I
I
I
I
Not Connected
LRCLK for ADC
BCLK for ADC
LRCLK In/Out Internal DACs
BCLK In/Out Internal DACs
Not Connected
Table IV. Pin Function Changes in Auxiliary Mode
2
2
2
2
2
S Mode
S Data Out, Internal ADC
S Data In, Internal DAC1
S Data In, Internal DAC2
S Data In, Internal DAC3
AUX_ADC L2
INTERNAL
DAC L2
I
I
I
2
2
2
S – MSB LEFT
S – MSB LEFT
S – MSB LEFT
Figure 11. Auxiliary Mode Timing
FRAME RATE; TDM BCLK FREQUENCY IS 256
LEFT
AUX_ADC L3
INTERNAL
DAC L3
–17–
AUX_ADC L4
INTERNAL
DAC L4
Auxiliary Mode
TDM Data Out to SHARC.
TDM Data In from SHARC.
AUX-I
AUX-I
AUX-I
TDM Frame Sync Out to SHARC (FSTDM).
TDM BCLK Out to SHARC.
AUX LRCLK In/Out. Driven by external LRCLK
from ADC in slave mode. In master mode,
driven by MCLK/512.
AUX BCLK In/Out. Driven by external BCLK from
ADC in slave mode. In master mode, driven by
MCLK/8.
AUX-I
INTERNAL
INTERNAL
DAC R1
ADC R1
2
2
2
2
S Data In 1 (from External ADC).
S Data In 2 (from External ADC).
S Data In 3 (from External ADC).
S Data Out (to External DAC).
FRAME RATE.
AUX_ADC R2
INTERNAL
DAC R2
AUX_ADC R3
INTERNAL
DAC R3
RIGHT
I
I
I
2
2
2
S – MSB RIGHT
S – MSB RIGHT
S – MSB RIGHT
AUX_ADC R4
MSB TDM
MSB TDM
INTERNAL
DAC R4
8TH
8TH
CH
CH
AD1839A