CS61305A-IL1 Cirrus Logic, Inc., CS61305A-IL1 Datasheet - Page 28

• Manufacturer Part Number: CS61305A-IL1
• Description: T1/E1 line interface
• Manufacturer: Cirrus Logic, Inc.

Interfacing The CS61305A With the
CS62180B T1 Transceiver
To interface with the CS62180B, connect the de-
vices as shown in Figure A5. In this case, the line
interface and CS62180B are in Host mode con-
trolled by a microprocessor serial interface. If the
line interface is used in Hardware mode, then the
line interface RCLK output must be inverted be-
fore being input to the CS62180B. If the
CS61305A is used in Extended Hardware Mode,
the RCLK output does not have to be inverted
before being input to the CS62180B.
28
Secondary Leakage Inductance
Primary Leakage Inductance
Interwinding Capacitance
Primary Inductance
Turns Ratio
ET-constant
Parameter
Table A2. Transformer Specifications
600 H min. @ 772 kHz
1.3 H max. @ 772 kHz
0.4 H max. @ 772 kHz
16 V- s min. for T1
12 V- s min. for E1
1:2 CT 5%
23 pF max.
Receiver
Figure A5. Interfacing the CS61305A with a
SCLK
SDO
SDI
CS
CS62180B
RNEG
RPOS
TPOS
TNEG
RCLK
TCLK
CS62180B (Host Mode)
TO HOST CONTROLLER
1:1.26 1.5 % for 120
1.544 MHz
SIGNAL
1:1.15 5 % for 100
CLOCK
1.5 mH min. @ 772 kHz
0.3 H max. @ 772 kHz
0.4 H max. @ 772 kHz
1:1 1.5 % for 75
16 V- s min. for T1
12 V- s min. for E1
Transmitter
18 pF max.
ACLK
TCLK
TPOS
TNEG
RNEG
RPOS
RCLK
CS61305A
CS61305A
MODE
SCLK
CLKE
SDO
SDI
INT
CS
DS157PP3
E1
T1
22k
E1
V+
V+
100k