DS3142 Datasheet, PDF (1/88 Pages) Dallas Semiconductor – Single/Dual/Triple/Quad DS3/E3 Framers

DESIGN KIT AVAILABLE
DS3141/DS3142/DS3143/DS3144
Single/Dual/Triple/Quad
DS3/E3 Framers
www.maxim-ic.com
GENERAL DESCRIPTION
The DS3141, DS3142, DS3143, and DS3144
(DS314x) devices include all necessary circuitry to
frame and format up to four separate DS3 or E3
channels. Each framer in these devices is
independently configurable to support M23 DS3,
C-Bit Parity DS3, or G.751 E3. The framers interface
to a variety of line interface units (LIUs),
microprocessor buses, and other system
components without glue logic. Each DS3/E3 framer
has its own HDLC controller, FEAC controller, and
BERT, as well as full support for error detection and
generation, performance monitoring, and loopbacks.
APPLICATIONS
SONET/SDH Muxes
PDH Muxes
Digital Cross-Connect Systems
Access Concentrators
ATM and Frame Relay Equipment
Routers
FUNCTIONAL DIAGRAM
LIU
INTERFACE
POS/NRZ
NEG
CLK
POS/NRZ
NEG/LCV
CLK
EACH FRAMER
TRANSMIT
FORMATTER
SYSTEM
INTERFACE
CLK
DATA
SYNC
OVERHEAD
RECEIVE
FRAMER
CLK
DATA
SYNC
Dallas
Semiconductor
DS314x
FEATURES
§ One/Two/Three/Four Independent DS3/E3
Framers on a Single Die
§ Framing and Formatting to M23 DS3, C-Bit Parity
DS3, and G.751 E3
§ LIU Interface can be Binary (NRZ) or Dual-Rail
(POS/NEG)
§ B3ZS/HDB3 Encoder and Decoder
§ Generate and Detect DS3/E3 Alarms
§ Integrated HDLC Controller for Each Channel
§ Integrated FEAC Controller for Each Channel
§ Integrated Bit Error-Rate Tester (BERT) for Each
Channel
§ Large Performance-Monitoring Counters
§ Line, Diagnostic, and Payload Loopbacks
§ Externally Controlled Transmit Overhead
Insertion Port
§ Support External Timing or Loop-Timing
§ Framers can be Powered Down When Not Used
§ 8-Bit Processor Port Supports Muxed or
Nonmuxed Bus Operation (Intel or Motorola)
§ 3.3V Supply with 5V Tolerant I/O
§ 144-Pin, 13mm x 13mm CSBGA Package
§ IEEE 1149.1 JTAG Support
ORDERING INFORMATION
PART
DS3141
DS3141N
DS3142
DS3142
DS3143
DS3143N
DS3144
DS3144N
NO. OF
FRAMERS
1
1
2
2
3
3
4
4
TEMP RANGE
0°C to +70°C
-40°C to +85°C
0°C to +70°C
-40°C to +85°C
0°C to +70°C
-40°C to +85°C
0°C to +70°C
-40°C to +85°C
Pin Configurations appear at end of data sheet.
PIN-PACKAGE
144 CSBGA
144 CSBGA
144 CSBGA
144 CSBGA
144 CSBGA
144 CSBGA
144 CSBGA
144 CSBGA
Note: Some revisions of this device may incorporate deviations from published specifications known as errata. Multiple revisions of any device
may be simultaneously available through various sales channels. For information about device errata, click here: www.maxim-ic.com/errata.
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