900,000+ datasheet pdf search and download

Datasheet4U offers most rated semiconductors data sheet pdf






Dallas Semiconductor

DS2282 Datasheet Preview

DS2282 Datasheet

T1 FDL Controller/Monitor Stik

No Preview Available !

www.DataSheet4U.com
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.
022798 1/22




Dallas Semiconductor

DS2282 Datasheet Preview

DS2282 Datasheet

T1 FDL Controller/Monitor Stik

No Preview Available !

www.DataSheet4U.com
DS2282
OVERVIEW
The DS2282 completely controls the Facility Data Link
(FDL) in T1 environments. It can handle the FDL re-
quirements outlined in American National Standards
Institute (ANSI) document T1.403–1989 or those out-
lined in the AT&T publication TR 54016 (1986/89). Re-
covered data from a T1 line is clocked into the DS2282
via the RPOS and RNEG pins with the RCLK signal.
See Figure 1. The DS2282 synchronizes to the incom-
ing data stream and extracts the FDL. Then, it will de-
code the incoming messages on the FDL and properly
create the FDL messages that must be transmitted.
An asynchronous serial port is used to control the
DS2282 and to retrieve data from it. The port is oper-
ated at 19.2 Kbps. Access to the onboard registers is
achieved through the serial port via the TXD and RXD
pins. An address can be assigned to this serial port.
This allows a single external controller to communicate
over a single bus to as many as 31 separate DS2282’s.
See Figure 2. Each DS2282 will listen for its address
and only respond when it is asked to do so.
Most of the clearable registers in the DS2282 that either
count error events or errored time intervals are recorded
in onboard, nonvolatile memory. Hence, in case of a lo-
cal loss of power, these registers will maintain their
counts.
Two typical applications of the DS2282 are shown in
Figures 3A and 3B. In these applications, the DS2282 is
completely controlling the FDL as well as monitoring the
T1 line. The DS2250 Micro Stik is used to configure the
DS2282 and to extract any performance data that may
be required. In these applications, the DS2250 is also
used to control either the DS2283 Enhanced T1 Line
Card Stik or the DS2180A T1 Transceiver. The DS2282
can also be operated without an external controller. See
Hardware Mode section and Table 7.
DS2282 BLOCK DIAGRAM Figure 1
RLOS(2)
B8ZS(20)
LLB(26)
PLB(14)
RCLK(3)
RPOS(4)
RNEG(5)
SYNCHRONIZER
ERROR
DETECTOR
FDL
EXTRACTOR
PERFORMANCE REPORT MESSAGE
UNSCHEDULED MESSAGE
MAINTENANCE MESSAGE DECODER
VDD(1)
GND(23)
TLCLK(12)
TLINK(28)
PRMXA(8)
RST(21)
SR
SERIAL PORT
CONTROLLER
RESET
PERFORMANCE REPORT MESSAGE
UNSCHEDULED MESSAGE
MAINTENANCE MESSAGE DECODER
NONVOLATILE
MEMORY
UBR
SLIP(13)
PSEN(27) PAS(15)
INT(7)
TXD(11)
RXD(10)
DRVEN(9)
UB1(16)
UB2(17)
UB3(18)
UB4(19)
UB5(24)
UB6(25)
022798 2/22


Part Number DS2282
Description T1 FDL Controller/Monitor Stik
Maker Dallas Semiconductor
PDF Download

DS2282 Datasheet PDF






Similar Datasheet

1 DS2282 T1 FDL Controller/Monitor Stik
Dallas Semiconductor





Part Number Start With

0    1    2    3    4    5    6    7    8    9    A    B    C    D    E    F    G    H    I    J    K    L    M    N    O    P    Q    R    S    T    U    V    W    X    Y    Z



Site map

Webmaste! click here

Contact us

Buy Components

Privacy Policy