DS2151QB Maxim Integrated Products, DS2151QB Datasheet - Page 39

• Manufacturer Part Number: DS2151QB
• Description: IC TXRX T1 1-CHIP 5V LP 44-PLCC
• Manufacturer: Maxim Integrated Products

Specifications of DS2151QB

• Function: Single-Chip Transceiver
• Interface: T1
• Number Of Circuits: 1
• Voltage - Supply: 4.75 V ~ 5.25 V
• Current - Supply: 65mA
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 44-LCC, 44-PLCC
• Includes: Alarm Detector and Generator, CSU Loop Codes Generator and Detector, DSX-1 and CSU Line Build-Outs Generator
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Power (watts): -

13 LINE INTERFACE FUNCTIONS
The line interface function in the DS2151Q contains three sections: the receiver, which handles clock and
data recovery; the transmitter, which waveshapes and drives the T1 line; and the jitter attenuator. Each of
these three sections is controlled by the Line Interface Control Register (LICR), which is described
below.
LICR: LINE INTERFACE CONTROL REGISTER (Address = 7C Hex)
(MSB)
LB2
SYMBOL
JABDS
EGL
TPD
DJA
LB2
LB1
LB0
JAS
LB1
LB0
POSITION
LICR.7
LICR.6
LICR.5
LICR.4
LICR.3
LICR.2
LICR.1
LICR.0
EGL
NAME AND DESCRIPTION
Line Build-Out Select Bit 2. Sets the transmitter build
out; see the
Line Build-Out Select Bit 1. Sets the transmitter build
out; see the
Line Build-Out Select Bit 0. Sets the transmitter build
out; see the
Receive Equalizer Gain Limit.
0 = -36dB
1 = -30dB
Jitter Attenuator Select.
0 = place the jitter attenuator on the receive side
1 = place the jitter attenuator on the transmit side
Jitter Attenuator Buffer Depth Select.
0 = 128 bits
1 = 32 bits (use for delay sensitive applications)
Disable Jitter Attenuator.
0 = jitter attenuator enabled
1 = jitter attenuator disabled
Transmit Power Down.
0 = normal transmitter operation
1 = powers down the transmitter and tri-states the TTIP
and TRING pins
39 of 60
JAS
Table
Table
Table
JABDS
13-2.
13-2.
13-2.
DJA
(LSB)
TPD
LICR