DS21354LN+ Maxim Integrated Products, DS21354LN+ Datasheet - Page 40
DS21354LN+
Manufacturer Part Number
DS21354LN+
Description
IC TXRX E1 1-CHIP 3.3V 100-LQFP
Manufacturer
Maxim Integrated Products
Datasheet
1.DS2154LNA2.pdf
(124 pages)
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
Lead free / RoHS Compliant
Power (watts)
-
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CCR4: COMMON CONTROL REGISTER 4 (Address = A8 Hex)
5.5.
When CCR4.7 is set to a one, the SCT will be forced into remote loopback (RLB). In this loopback, data
input via the RPOSI and RNEGI pins will be transmitted back to the TPOSO and TNEGO pins. Data will
continue to pass through the receive-side framer of the SCT as it would normally and the data from the
transmit-side formatter will be ignored. Please see
5.6.
When CCR4.6 is set to one, the SCT will be forced into local loopback (LLB). In this loopback, data will
continue to be transmitted as normal through the transmit side of the SCT. Data being received at RTIP
and RRING will be replaced with the data being transmitted. Data in this loopback will pass through the
jitter attenuator. Please see
SYMBOL
(MSB)
RLB
TCM4
TCM3
TCM2
TCM1
TCM0
LIAIS
RLB
LLB
Remote Loopback
Local Loopback
POSITION
LLB
CCR4.7
CCR4.6
CCR4.5
CCR4.4
CCR4.3
CCR4.2
CCR4.1
CCR4.0
Figure 2-1
LIAIS
Remote Loopback.
0 = loopback disabled
1 = loopback enabled
Local Loopback.
0 = loopback disabled
1 = loopback enabled
Line Interface AIS Generation Enable.
0 = allow normal data from TPOSI/TNEGI to be transmitted at TTIP and
TRING
1 = force unframed all ones to be transmitted at TTIP and TRING at the
MCLK rate
Transmit Channel Monitor Bit 4. MSB of a channel decode that
determines which transmit channel data will appear in the TDS0M
register. See Section
Transmit Channel Monitor Bit 3.
Transmit Channel Monitor Bit 2.
Transmit Channel Monitor Bit 1.
Transmit Channel Monitor Bit 0. LSB of the channel decode.
for more details.
TCM4
40 of 124
Figure 2-1
NAME AND DESCRIPTION
8
for details.
TCM3
for more details.
TCM2
TCM1
TCM0
(LSB)
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