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CS61318-IL Datasheet(PDF) 1 Page - Cirrus Logic

Part No. CS61318-IL
Description  E1 LINE INTERFACE UNIT
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Maker  CIRRUS [Cirrus Logic]
Homepage  http://www.cirrus.com
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Preliminary Product Information
This document contains information for a new product.
Cirrus Logic reserves the right to modify this product without notice.
1
Copyright
© Cirrus Logic, Inc. 1999
(All Rights Reserved)
P.O. Box 17847, Austin, Texas 78760
(512) 445 7222 FAX: (512) 445 7581
http://www.cirrus.com
CS61318
E1 Line Interface Unit
Features
s E1 Line Interface Unit
s No Crystal Needed for Jitter Attenuation
s Meets CTR-12/TBR-12 Jitter Tolerance and Attenu-
ation Requirements
s Meets ITU-T G.775 Requirements for LOS and AIS
s Meets the BS6450 Transmitter Short-Circuit
Requirements for E1 Applications
s AWG for User Programmable Pulse Shapes
s Line Quality Monitoring Function
s TX Driver High Impedance / Low Power Control
s AIS and LOS Monitoring
s Generation and Detection of Loop Up / Loop Down
Signaling
s Selectable HDB3 Encoding/Decoding
s Selectable Unipolar or Bipolar I/O
s Compliant with:
— ITU-T Recommendations: G.703, G.732, G.775, I.431
— ETSI ETS 300 011, 300 233, CTR 12, TBR 13
— TR-NET-00499
Description
The CS61318 is an E1 primary rate line interface unit.
This device combines the complete analog transmit and
receive circuitry for a single, full-duplex interface E1
rates. The device provides jitter attenuation compliant to
CTR12/TBR13 without requiring an external crystal. Al-
so, the CS61318 is pin and function compatible with the
Level One LXT318.
In addition to a basic hardware control mode, a host
mode is available that gives the user an enhanced func-
tionality via a serial microprocessor interface. The
extended features include custom pulse shape genera-
tion, AIS and LOS monitoring functions, signal strength
monitoring, and generation and detection of loop up and
loop down codes.
ORDERING INFORMATION
CS61318-IL
28-pin PLCC
CS61318-IP
28-pin PDIP
TCLK
TDATA/TPOS
UBS/TNEG
JASEL
RCLK
RDATA/RPOS
BPV/RNEG
INT/NLOOP
LOS
2
3
4
E
N
C
O
D
E
R
11
REMOTE
LOOPBACK
8
7
6
D
E
C
O
D
E
R
23
12
INBAND
NLOOP
& LOS
PROCESSOR
RECEIVE
CLOCK
GENERATOR
9
10
XTALIN
XTALOUT
5
21
221415
MODE
RV+
RGND TGND
TV+
JITTER
ATTEN
TIMING
& DATA
RECOVERY
LOS/
NLOOP
Clear
REGISTERS & CONTROL LOGIC
TAOS Enable
JITTER
ATTEN
TRANSMIT
TIMING &
CONTROL
PULSE
SHAPING
CIRCUITRY
ROM / RAM
LINE DRIVERS
SERIAL
PORT
LLOOP
Enable
LOCAL
LOOPBACK
(ANALOG)
EQUALIZER
CONTROL
SLICERS
& PEAK
DETECT
NOISE &
CROSSTALK
FILTERS
MAGNITUDE
EQUALIZER
AGC
13
16
28
26
27
24
25
18
19
20
1
TTIP
TRING
CLKE/TAOS
CS/RLOOP
SCLK/LLOOP
SDI/LBO1
SDO/LBO2
LATN
RTIP
RRING
MCLK
LOCAL
LOOPBACK
(DIGITAL)
DS441PP2
AUG ‘99




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