DS21354LN Maxim Integrated Products, DS21354LN Datasheet - Page 17

• Manufacturer Part Number: DS21354LN
• Description: IC TXRX E1 1-CHIP 3.3V 100-LQFP
• Manufacturer: Maxim Integrated Products

Specifications of DS21354LN

• Function: Single-Chip Transceiver
• Interface: E1, HDLC
• Number Of Circuits: 1
• Voltage - Supply: 3.14 V ~ 3.47 V
• Current - Supply: 75mA
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 100-LQFP
• Includes: Remote and AIS Alarm Detector / Generator
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Power (watts): -

3.1.2.
Signal Name:
Signal Description:
Signal Type:
Updated with the fully recovered E1 data stream on the rising edge of RCLK.
Signal Name:
Signal Description:
Signal Type:
4kHz to 20kHz clock (Sa bits) for the RLINK output. See Section
Signal Name:
Signal Description:
Signal Type:
2.048MHz clock that is used to clock data through the receive-side framer.
Signal Name:
Signal Description:
Signal Type:
A 256kHz clock that pulses high during the LSB of each channel. Synchronous with RCLK when the
receive-side elastic store is disabled. Synchronous with RSYSCLK when the receive-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 RCLK when the receive-side elastic store is disabled. Synchronous with RSYSCLK
when the receive-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 service,
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:
Received NRZ serial data. Updated on rising edges of RCLK when the receive-side elastic store is
disabled. Updated on the rising edges of RSYSCLK when the receive-side elastic store is enabled.
Signal Name:
Signal Description:
Signal Type:
An extracted pulse, one RCLK wide, is output at this pin that identifies either frame or CAS/CRC
multiframe boundaries. If the receive-side elastic store is enabled, then this pin can be enabled to be an
input at which a frame or multiframe boundary pulse synchronous with RSYSCLK is applied.
Receive-Side Pins
RLINK
Receive Link Data
Output
RLCLK
Receive Link Clock
Output
RCLK
Receive Clock
Output
RCHCLK
Receive Channel Clock
Output
RCHBLK
Receive Channel Block
Output
RSER
Receive Serial Data
Output
RSYNC
Receive Sync
Input/Output
17 of 124
13
for details.
10
for details.