DS21354LN+ Maxim Integrated Products, DS21354LN+ Datasheet - Page 32

• 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: Lead free / RoHS Compliant
• Power (watts): -

5.2.
Once synchronization is accomplished there are certain criteria that can cause a resynchronization. These
criteria are detailed in
Table 5-2. SYNC/RESYNC Criteria
MULTIFRAME
FRAME OR
LEVEL
CRC4
CAS
FAS
Synchronization And Resynchronization
FAS present in frame N
and N + 2, and FAS not
present in frame N + 1
Two valid MF alignment
words found within 8 ms
Valid MF alignment word
found and previous time
slot 16 contains code other
than all zeros
Table
SYNC CRITERIA
5-2. Also see
Figure 18-14
32 of 124
Three consecutive incorrect FAS
received
Alternate (RCR1.2=1) the above
criteria is met or three
consecutive incorrect bit 2 of
non–FAS received
915 or more CRC4 codewords
out of 1000 received in error
Two consecutive MF alignment
words received in error
DS21354/DS21554 3.3V/5V E1 Single-Chip Transceivers
RESYNC CRITERIA
for a flow chart of the synchronization process.
4.2 and 4.3.2
ITU SPEC.
G.732 5.2
G.706
G.706
4.1.1
4.1.2