CS61584A Cirrus Logic, Inc., CS61584A Datasheet - Page 15

• Manufacturer Part Number: CS61584A
• Description: Dual T1/e1 Line Interface
• Manufacturer: Cirrus Logic, Inc.

2. OVERVIEW
The CS61584A is a dual line interface for T1/E1
applications, designed for high-volume cards
where low power and high density are required.
The device can be operated in either Hardware
mode using control pins or in Host mode using an
internal register set. One board design can support
all T1/E1 short-haul modes by only changing com-
ponent values in the receive and transmit paths (if
REFCLK and TCLK are connected externally).
Figure 13 illustrates applications of the CS61584A
in various environments.
DS261PP5
DS261F1
CS62180B
CS62180B
FRAMER
FRAMER
MUX
(gapped)
TDATA
TNEG
TPOS
TCLK
RNEG
RDATA
RPOS
TPOS
TNEG
RPOS
RNEG
RCLK
TCLK
RCLK
RCLK
TCLK
REFCLK
REFCLK
REFCLK
CODER
Figure 13. Examples of CS61584A Applications
HDB3,
B8ZS,
AMI
ATTENUATOR
ATTENUATOR
(Including 62411 systems with multiple T1 lines)
JITTER
JITTER
(i.e., VT1.5 card for SONET or SDH mux)
ASYNCHRONOUS MUX APPLICATION
ATTENUATOR
SYNCHRONOUS APPLICATION
DETECT
LOOP TIMED APPLICATION
JITTER
AIS
CS61584A
CS61584A
CS61584A
DS261PP5
LINE RECEIVER
LINE RECEIVER
LINE DRIVER
LINE DRIVER
LINE RECEIVER
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 impedance
of the load, providing excellent return loss to insure
superior T1/E1 pulse quality. An additional benefit
of the internal impedance matching is a 50 percent
reduction in power consumption compared to im-
plementing return loss using external resistors that
causes the transmitter to drive the equivalent of two
line loads.
LINE DRIVER
TRING
RRING
TRING
RRING
TRING
RRING
TTIP
RTIP
TTIP
RTIP
TTIP
RTIP
CIRCUITRY
CIRCUITRY
CIRCUITRY
CIRCUITRY
CIRCUITRY
CIRCUITRY
TRANSMIT
TRANSMIT
TRANSMIT
RECEIVE
RECEIVE
RECEIVE
CS61584A
CS61584A
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