CS61535A-IL1 View Datasheet(PDF) - Cirrus Logic
Part Name
Description
Manufacturer
CS61535A-IL1 Datasheet PDF : 48 Pages
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CS61535A
APPLICATIONS
+ 68 µF
+5V
0.1 µF
+
1.0 µF +5V
Control
&
Monitor
Frame
Format
Encoder/
Decoder
XTL
RGND
21
15
TGND
28 CLKE
RV+ TV+ SCLK 27
1 ACLKI
CS 26
12 LOS
INT 23
11 DPM
SDI 24
RV+
5
7
6
8
MODE
RPOS
RNEG
RCLK
CS61535A
IN
HOST
MODE
SDO 25
RTIP 19
3 TPOS
RRING 20
4 TNEG
2 TCLK
MTIP 17
MRING 18
9 XTALIN
TRING 16
10 XTALOUT RGND TGND TTIP 13
22
14
100 kΩ
µP
Serial
Port
CT 2:1
R1
R2
0.47 µF
RECEIVE
LINE
TRANSMIT
LINE
DEVICE
CS61535A
FREQUENCY
MHz
1.544
2.048
2.048
CABLE
Ω
100
120
75
R1&2
Ω
200
240
150
Figure A1. Host Mode Configuration
Transmit
Transformer
1:1.15
1:1.26
1:1
Line Interface
Figures A1-A3 show the typical configurations
for interfacing the I.C. to a line through transmit
and receive transformers.
The receiver transformer is center tapped and
center grounded with resistors between the center
tap and each leg on the I.C. side. These resistors
provide the termination for the line.
Figures A1-A3 show a 0.47 µF capacitor in series
with the transmit transformer primary. This ca-
pacitor is needed to prevent any buildup in the
core of the transformer due to any DC imbalance
that may be present at the differential outputs,
TTIP and TRING. If DC saturates the trans-
former, a DC offset will result during the
transmission of a space (zero) as the transformer
tries to dump the charge and return to equilib-
rium. The blocking capacitor will keep DC
current from flowing in the transformer.
Selecting an Oscillator Crystal
Specific crystal parameters are required for
proper operation of the CS61535A. It is recom-
mended that the CXT6176 from Crystal
DS40F2
29
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