User Manual

OVERVIEW
The CS61583 is a dual line interface for T1/E1
applications, designed for high-volume cards
where low power and high density are required.
One board design can support all T1/E1 short-
haul modes by only changing component values
in the receive and transmit paths (if REFCLK
and TCLK are externally tied together). Figure 5
illustrates applications of the CS61583 in various
environments.
All control of the device is achieved via external
pins, eliminating the need for microprocessor
support. The following pin control options are
available on a per channel basis: line length se-
lection, coder mode, jitter attenuator location,
transmit all ones, local loopback, and remote
loopback.
The line driver generates waveforms compatible
with E1 (CCITT G.703), T1 short haul (DSX-1),
and T1 FCC Part 68 Option A (DS1). A single
transformer turns ratio is used for all waveform
types. The driver internally matches the imped-
ance of the load, providing excellent return loss
to insure superior T1/E1 pulse quality. An addi-
ASYNCHRONOUS MUX APPLICATION
(i.e., VT1.5 card for SONET or SDH mux)
SYNCHRONOUS APPLICATION
(Including 62411 systems with multiple T1 lines)
TTIP
TPOS
TNEG
RNEG
TRING
RPOS
RRING
RTIP
CS62180B
FRAMER
JITTER
ATTENUATOR
CS61583
LINE DRIVER
LINE RECEIVER
RECEIVE
CIRCUITRY
TRANSMIT
CIRCUITRY
RCLK
TCLK
REFCLK
TTIP
TDATA
RDATA
TRING
LINE DRIVER
AMI
B8ZS,
HDB3,
CODER
RRING
RTIP
MUX
CS61583
JITTER
ATTENUATOR
REFCLK
RCLK
TCLK
(gapped)
TTIP
TPOS
TNEG
RNEG
TRING
RPOS
RRING
RTIP
CS62180B
FRAMER
JITTER
ATTENUATOR
CS61583
LINE DRIVER
LINE RECEIVER
RCLK
TCLK
REFCLK
AIS
DETECT
LINE RECEIVER
RECEIVE
CIRCUITRY
TRANSMIT
CIRCUITRY
RECEIVE
CIRCUITRY
TRANSMIT
CIRCUITRY
LOOP TIMED APPLICATION
Figure 5. Examples of CS61583 Applications
CS61583
DS172PP5 9