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DS2182A Datasheet

  • DS2182A

  • T1 Line Monitor

  • 25頁

  • DALLAS   DALLAS

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DS2182A
T1 Line Monitor
www.dalsemi.com
FEATURES
摟
摟
Performs framing and monitoring functions
Supports Superframe and Extended Super-
frame formats
Four onboard error counters
鈥?16-bit bipolar violation
鈥?8-bit CRC
鈥?8-bit OOF
鈥?8-bit frame bit error
Indication of the following
鈥?yellow and blue alarms
鈥?incoming B8ZS code words
鈥?8 and 16 zero strings
鈥?change of frame alignment
鈥?loss of sync
鈥?carrier loss
Simple serial interface used for config-
uration, control and status monitoring
Burst mode allows quick access to counters
for status updates
Automatic counter reset feature
Single 5V supply; low-power CMOS tech-
nology
Available in 28-pin DIP and 28-pin PLCC
The DS2182A is upward-compatible from
the original DS2182
The updated DS2182A includes the following
changes from the original DS2182:
摟
Ability to count excessive zeros
摟
Severely Errored Framing Event indication
摟
Updated AIS detection
摟
Updated RCL detection
摟
AIS and RCL alarm clear indications
摟
PIN ASSIGNMENT
INT
SDI
SDO
CS
SCLK
NC
RYEL
RLINK
RLCLK
RCLK
RCHCLK
RSER
NC
VSS
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
VDD
RLOS
RFER
RBV
RCL
RNEG
RPOS
RST
TEST
RSIGSEL
RSIGFR
RABCD
RMSYNC
RFSYNC
摟
摟
摟
摟
摟
摟
28-Pin DIP (600-mil)
DESCRIPTION
The DS2182A T1 Line Monitor Chip is a monolithic CMOS device designed to monitor real-time
performance on T1 lines. The DS2182A frames to the data on the line, counts errors, and supplies
detailed information about the status and condition of the line. Large on-board counters allow the
accumulation of errors for extended periods, which permits a single CPU to monitor a number of T1
lines. Output clocks that are synchronized to the incoming data stream are provided for easy extraction of
S-Bits, FDL bits, signaling bits, and channel data. The DS2182A meets the requirements of ANSI
T1.231.
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092299

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