DS2153Q Datasheet, PDF (1/52 Pages) Dallas Semiconductor – E1 Single-Chip Transceiver

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DS2153Q
E1 Single-Chip Transceiver
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 Transceiver
5V supply; low power CMOS
Industrial grade version (-40°C to +85°C)
available (DS2153QN)
PIN ASSIGNMENT
FUNCTIONAL BLOCKS
PARALLEL CONTROL
PORT
DALLAS
DS2153Q
E1 SCT
ACTUAL SIZE OF 44-PIN PLCC
ALE 7
WR 8
RLINK 9
RLCLK 10
DVSS 11
RCLK 12
RCHCLK 13
RSER 14
RSYNC 15
RLOS/LOTC 16
SYSCLK 17
39 TSER
38 TCLK
37 DVDD
36 TSYNC
35 TLINK
34 TLCLK
33 TCHBLK
32 TRING
31 TVDD
30 TVSS
29 TTIP
DESCRIPTION
The DS2153Q T1 Single-Chip Transceiver (SCT) contains 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 attenuator (selectable to either 32 bits or 128 bits) can be placed in either the transmit
or receive data paths. The framer locates the frame and multiframe boundaries and monitors the data
stream for alarms. It is also used for extracting and inserting signaling data, Si, and Sa-bit information.
The device contains a set of 71 8-bit internal registers which the user can access to control the operation
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