Rainbow Electronics DS2153Q User Manual
Rainbow Electronics Communication
E
Copyright 1995 by Dallas Semiconductor Corporation.
All Rights Reserved. For important information regarding
patents and other intellectual property rights, please refer to
Dallas Semiconductor data books.
DS2153Q
E1 Single–Chip Transceiver
DS2153Q
022697 1/48
FEATURES
•
Complete E1(CEPT) PCM–30/ISDN–PRI transceiver
functionality
•
Onboard line interface for clock/data recovery and
waveshaping
•
32–bit or 128–bit jitter attenuator
•
Generates line build–outs for both 120 ohm and 75
ohm lines
•
Frames to FAS, CAS, and CRC4 formats
•
Dual onboard two–frame elastic store slip buffers that
can connect to backplanes up to 8.192 MHz
•
8–bit parallel control port that can be used on either
multiplexed or non–multiplexed buses
•
Extracts and inserts CAS signaling
•
Detects and generates Remote and AIS alarms
•
Programmable output clocks for Fractional E1, H0,
and H12 applications
•
Fully independent transmit and receive functionality
•
Full access to both Si and Sa bits
•
Three separate loopbacks for testing
•
Large counters for bipolar and code violations, CRC4
code word errors, FAS errors, and E bits
•
Pin compatible with DS2151Q T1 Single–Chip Trans-
ceiver
•
5V supply; low power CMOS
•
Industrial grade version (–40
°
C to +85
°
C) available
(DS2153QN)
PIN ASSIGNMENT
LINE INTERF
ACE
PARALLEL CONTROL
PORT
FRAMER
ELASTIC ST
ORES
FUNCTIONAL BLOCKS
7
8
9
10
11
12
13
14
15
16
17
39
38
37
36
35
34
33
32
31
30
29
18
19
20
21
22
23
24
25
26
27
28
6
5
4
3
2
1
44
43
42
41
40
TSER
TCLK
DVDD
TSYNC
TLINK
TLCLK
TCHBLK
TRING
TVDD
TVSS
TTIP
ALE
WR
RLINK
RLCLK
DVSS
RCLK
RCHCLK
RSER
RSYNC
RLOS/LOTC
SYSCLK
RCHBLK
ACLKI
BTS
R
TIP
RRING
R
VDD
R
VSS
XT
AL1
XT
AL2
INT1
INT2
CS
RD
AD7
AD6
AD5
AD4
AD3
AD2
AD1
AD0
TCHCLK
DALLAS
DS2153Q
E1 SCT
ACTUAL SIZE OF
44–PIN PLCC
LONG & SHOR
T
HAUL
DESCRIPTION
The DS2153Q T1 Single–Chip Transceiver (SCT) con-
tains all of the necessary functions for connection to E1
lines. The onboard clock/data recovery circuitry coverts
the AMI/HDB3 E1 waveforms to a NRZ serial stream.
The DS2153 automatically adjusts to E1 22 AWG (0.6
mm) twisted–pair cables from 0 to 1.5 KM. The device
can generate the necessary G.703 waveshapes for
both 75 ohm and 120 ohm cables. The onboard jitter