Datasheet
Preliminary Technical Data EVAL-AD1940AZ
Rev. PrA | Page 23 of 30
S/PDIF INTERFACE
S/PDIF Rx Serial Port:
CS8416 is Master by Default
AD1940 Input is Slave by Default
AD1940 Input Channels 6-7 in I2S Mode
S/PDIF Input Selection
SPDIF Transmitter
S/PDIF Tx Serial Port:
CS8406 is Slave by Default
Set AD1940 Serial Output 1 to Master
AD1940 Output Channels 8-9 in I2S Mode
Error
Audio
96kHz
ISOLATE GROUND
ISOLATE GROUND
C160
10nF
C161
10nF
C162
0.10uF
R152
10k0
J25
CTP-021A-S-YEL
R153
75R0
L6
600Ohm @ 100MHz
2
GND
3
DVDD
1
OUT
U35
TORX147L(FT)
SW6
DPDT Slide
C163
0.10uF
C164
0.10uF
L7
600Ohm @ 100MHz
L8
600Ohm @ 100MHz
4
RXP0
5
RXN
8
FILT
6
VA
23
VD
26
SDOUT
28
OLRCK
27
OSCLK
24
RMCK
10
RXSEL1
11
RXSEL0
12
TXSEL1
13
TXSEL0
19
C
18
U
17
RCBL
14
NV/RERR
15
AUDIO
3
RXP1
2
RXP2
1
RXP3
20
TX
16
96KHZ
21
VL
9
RST
25
OMCK
7
AGND
22
DGND
U36
CS8416
C165
22nF
C166
1.0nF
R154
3k01
C167
0.10uF
R155
47k5
R156
47k5
R157
47k5
R158
47k5
R159
47k5
+
C168
10uF
+
C169
10uF
TP70
1
4
5
8
2
6
U37
SC937-02_AES_TRANSFORMER
1
GND
2
DVDD
3
INPUT
U38
TOTX147L(FT)
R161
374R
R162
90R9
R163
10k0
L9
600Ohm @ 100MHz
C170
0.10uF
J26
CTP-021A-S-YEL
14
SDIN
12
ILRCLK
13
ISCLK
21
OMCK
3
EMPH
16
CEN
1
COPY/C
28
ORIG
4
SFMT0
9
RST
6
VD
23
VL
26
TXP
25
TXN
24
H/S
19
AUDIO
10
APMS
20
HWCK0
11
TCBLD
27
HWCK1
22
GND
5
SFMT1
2
NC1
7
NC2
8
NC3
17
V
15
TCBL
18
U
U39
CS8406_HARDWARE
C171
0.10uF
C172
0.10uF
R164
47k5
+
C173
10uF
+
C174
10uF
C175
10nF
1
2
D5
Red Diffused
R165
392R
1
2
D6
Green Diffused
R166
392R
5
3A
6
3Y
U40-C
74HC04D-T
9
4A
8
4Y
U40-D
74HC04D-T
11
5A
10
5Y
U40-E
74HC04D-T
13
6A
12
6Y
U40-F
74HC04D-T
1
2
D7
Yellow Diffused
R167
392R
C176
0.10uF
1
1A
2
1Y
U40-A
74HC04D-T
3
2A
4
2Y
U40-B
74HC04D-T
R168
0R00
R169
0R00
1
2
3
4
5
6
7
89
10
11
12
13
14
15
16
R160
56R0
SPDIF_RX_SDATA
SPDIF_RX_LRCLK
SPDIF_RX_BCLK
SPDIF_RX_MCLK
D3V3
D3V3
RESET
D3V3
D3V3
NV/RERR
AUDIO
96KHZ
LO
HI
D3V3
RESET
1940_BCLK_OUT1
1940_LRCLK_OUT1
1940_SDATA_OUT4
MCLK
D3V3 D3V3
NV/RERR
AUDIO
96KHZ
D3V3
D3V3
Figure 27. S/PDIF Interface Schematics