DS26528 Datasheet, PDF (1/269 Pages) Maxim Integrated Products – Octal T1/E1/J1 Transceiver

www.maxim-ic.com
GENERAL DESCRIPTION
The DS26528 is a single-chip 8-port framer and line
interface unit (LIU) combination for T1, E1, and J1
applications. Each port is independently configurable,
supporting both long-haul and short-haul lines.
APPLICATIONS
Routers
Channel Service Units (CSUs)
Data Service Units (DSUs)
Muxes
Switches
Channel Banks
T1/E1 Test Equipment
FUNCTIONAL DIAGRAM
T1/E1/J1
NETWORK
DS26528
T1/J1/E1
Transceiver ^{x8 BACKPLANE}
TDM
DS26528
Octal T1/E1/J1 Transceiver
FEATURES
§ Eight Complete T1, E1, or J1 Long-Haul/Short-
Haul Transceivers (LIU plus Framer)
§ Independent T1, E1, or J1 Selections for Each
Transceiver
§ Internal Software-Selectable Transmit- and
Receive-Side Termination for 100W T1 Twisted
Pair, 110W J1 Twisted Pair, 120W E1 Twisted
Pair, and 75W E1 Coaxial Applications
§ Crystal-Less Jitter Attenuators can be Selected
for Transmit or Receive Path. The Jitter
Attenuator meets ETSI CTR 12/13, ITU G.736,
G.742, G.823, and AT&T PUB 62411.
§ External Master Clock can be Multiple of
2.048MHz or 1.544MHz for T1/J1 or E1
operation. This Clock is Internally Adapted for T1
or E1 Usage in the Host Mode.
§ Receive Signal Level Indication from -2.5dB to
-36dB in T1 Mode and -2.5dB to -44dB in E1
Mode in Approximate 2.5dB Increments
§ Transmit Open and Short Circuit Detection
§ LIU LOS in Accordance with G.775, ETSI
300233, and T1.231
§ Transmit Synchronizer
§ Flexible Signaling Extraction and Insertion Using
Either the System Interface or Microprocessor
Port
§ Alarm Detection and Insertion
§ T1 Framing Formats of D4, SLC-96, and ESF
§ J1 Support
§ E1 G.704 and CRC-4 Multiframe
§ T1 to E1 Conversion
Features continued in Section 2.
ORDERING INFORMATION
PART
TEMP RANGE PIN-PACKAGE
DS26528
-40°C to +85°C 256 TE-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.
1 of 269
REV: 012405