DS3146 Datasheet, PDF (1/89 Pages) Maxim Integrated Products – 6-/8-/12-Channel DS3/E3 Framers

DESIGN KIT AVAILABLE
DS3146/DS3148/DS31412
6-/8-/12-Channel DS3/E3 Framers
www.maxim-ic.com
GENERAL DESCRIPTION
The DS3146/DS3148/DS31412 (DS314x) devices
include all necessary circuitry to frame and format up
to 12 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
DS3146/DS3148/DS31412
FEATURES
§ 6/8/12 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
§ 349-Pin, 27mm x 27mm BGA Package
§ IEEE 1149.1 JTAG Support
ORDERING INFORMATION
PART
DS3146
DS3146N
DS3148
DS3148N
DS31412
DS31412N
NO. OF
FRAMERS
6
6
8
8
12
12
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
Pin Configurations appear at end of data sheet.
PIN-PACKAGE
349 BGA
349 BGA
349 BGA
349 BGA
349 BGA
349 BGA
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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REV: 071103