CS4216 Datasheet, PDF (46/58 Pages) Cirrus Logic – 16-Bit Stereo Audio Codec

CDB4216
LOUT and ROUT. As with the line inputs, BNC-
to-phono adapters are provided for flexibility.
The line outputs can drive an impedance of
10 kΩ or more, which is the typical input imped-
ance of most audio gear.
AUDIO PORT HEADER
The CDB4216/8 is primarily designed to evalu-
ate the CS4216/8 in single chip mode, i.e. only
one codec on the serial bus. This is the factory
default state of the CDB4216/8.
The audio port header J15 provides all buffered
signals necessary to connect to the serial port of
a DSP or other controller (see Figure 4). SDOU-
TUB can provide an unbuffered version of
SDOUT which can be used when connecting
multiple codecs on the same bus. The default
configuration does not connect SDOUTUB
which may be connected to the SDOUT of the
CS4216/8 through J17 jumper.
The eval board supports both master and slave
sub-modes. In master sub-modes, SSYNC and
SCLK are output (and buffered) from the
CS4216/8. In slave sub-modes, SSYNC and
SCLK must be provided externally and must be
synchronous to the master clock CLKIN.
SSYNC
SCLK
CS4216
SDOUT
SDIN
DI1
MF1
MF2
MF5
PDN
DO1
SSYNC
R44
1
10
8
44
9
R10 ¹⁰
10 11
SCLK
R39
20
43
7
42
J16
11
33
18
MF1a
40
5
MF2
39
3
38
6
13
12
U7
37
4
U6
74HC243
1
OEA
13
OEB
6
B3
A3
5
B2
A2
4
B1
A1
3
B0
A0
CFSIN
R31
R32
20
20
J15
J17
13
R40
20
9
SDOUTUB
SDOUT
SDIN
SCLK
SSYNC
2
MF1b
15
R41
20k
DI4
DI1 ^DI3
R49
DI2
13
4
J13
DI4
DI3
DI2
DI1
17
DO4
J18 B
MF5
14
U
VD
R46
8 ^R42 47.5k
9
8
100
VD
R38
DO3
DO2
DO1
28k
16
74HC541
PDN
R9
237k
806
D2
DO1
Q1
U7
1
OE1
19
OE2
74HC541
Figure 4. Serial Port Headers
46
DS83DB4