DS21354LB+ Maxim Integrated Products, DS21354LB+ Datasheet - Page 14
![IC TXRX E1 3.3V 100-LQFP](/photos/6/82/68291/406-100-lqfp_sml.jpg)
DS21354LB+
Manufacturer Part Number
DS21354LB+
Description
IC TXRX E1 3.3V 100-LQFP
Manufacturer
Maxim Integrated Products
Datasheet
1.DS2154LNA2.pdf
(124 pages)
Specifications of DS21354LB+
Function
Single-Chip Transceiver
Interface
E1, HDLC
Number Of Circuits
1
Voltage - Supply
3.14 V ~ 3.47 V
Current - Supply
75mA
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
100-LQFP
Includes
Remote and AIS Alarm Detector / Generator
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Power (watts)
-
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3.1.
3.1.1.
Signal Name:
Signal Description:
Signal Type:
A 2.048MHz primary clock. Used to clock data through the transmit side formatter.
Signal Name:
Signal Description:
Signal Type:
Transmit NRZ serial data. Sampled on the falling edge of TCLK when the transmit side elastic store is
disabled. Sampled on the falling edge of TSYSCLK when the transmit side elastic store is enabled.
Signal Name:
Signal Description:
Signal Type:
A 256kHz clock that pulses high during the LSB of each channel. Synchronous with TCLK when the
transmit side elastic store is disabled. Synchronous with TSYSCLK when the transmit side elastic store is
enabled. Useful for parallel to serial conversion of channel data.
Signal Name:
Signal Description:
Signal Type:
A user-programmable output that can be forced high or low during any of the 32 E1 channels.
Synchronous with TCLK when the transmit side elastic store is disabled. Synchronous with TSYSCLK
when the transmit-side elastic store is enabled. Useful for blocking clocks to a serial UART or LAPD
controller in applications where not all E1 channels are used such as Fractional E1, 384kbps (H0),
768kbps, or ISDN–PRI. Also useful for locating individual channels in drop-and-insert applications, for
external per-channel loopback, and for per-channel conditioning. See Section
Signal Name:
Signal Description:
Signal Type:
1.544MHz, 2.048MHz, 4.096MHz, or 8.192MHz clock. Only used when the transmit-side elastic store
function is enabled. Should be tied low in applications that do not use the transmit-side elastic store. See
Section
Signal Name:
Signal Description:
Signal Type:
4kHz to 20kHz demand clock (Sa bits) for the TLINK input. See Section
Pin Function Description
17
for details on 4.096MHz and 8.192MHz operation using the Interleave Bus Option.
Transmit-Side Pins
TCLK
Transmit Clock
Input
TSER
Transmit Serial Data
Input
TCHCLK
Transmit Channel Clock
Output
TCHBLK
Transmit Channel Block
Output
TSYSCLK
Transmit System Clock
Input
TLCLK
Transmit Link Clock
Output
14 of 124
17
for details.
12
for details.
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