DS2282 Datasheet, PDF (1/22 Pages) Dallas Semiconductor – T1 FDL Controller/Monitor Stik

DS2282
DS2282
T1 FDL Controller/Monitor Stik
FEATURES
• Fully implements the FDL message format as de-
scribed in the ANSI document T1.403–1989
• Fully implements the maintenance message protocol
described in AT&T TR 54016 (1986/89)
• Provides high–level monitor counts, namely:
– Errored Seconds
– Severely Errored Seconds
– Unavailable Seconds
• Important counts are stored in nonvolatile memory
• Works in conjunction with the DS2283 Enhanced T1
Line Card Stik or DS2180A T1 Transceiver
• Simple serial port used to retrieve information and
control operation
• Can be used without an external controller
• Connects to a standard 30–pin Single In–Line con-
nector
• Single +5V supply
PIN ASSIGNMENT
VDD 1
RLOS 2
RCLK 3
RPOS 4
RNEG 5
NC 6
INT 7
PRMXA 8
DRVEN 9
RXD 10
TXD 11
TLCLK 12
SLIP 13
PLB 14
PAS 15
UB1 16
UB2 17
UB3 18
UB4 19
B8ZS 20
RST 21
NC 22
GND 23
UB5 24
UB6 25
LLB 26
PSEN 27
TLINK 28
NC 29
NC 30
(actual size)
DESCRIPTION
The DS2282 completely controls the Facility Data Link
(FDL) as described in the Bellcore document TR–
TSY–000194 (Extended Superframe Format Interface
Specification – December 1987) and the ANSI docu-
ment T1.403–1989 (Carrier to Carrier Installation – DS1
Metallic Interface). It also implements the protocol that
is described in the AT&T publication TR 54016 (Re-
quirements for Interfacing DTE to Services Employing
ESF – 1986/89). In addition it provides a number of im-
portant performance parameters involved in monitoring
T1 lines such as Errored Seconds, Severely Errored
Seconds, and Unavailable Seconds.
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