MT90823
2048 x 2048 Channels Selectable Rate (2, 4, 8 Mbps) 3.3 V Non-blocking Large Digital Switch (LDX)
Overview
The MT90823 Large Digital Switch has a non-blocking switch capacity of: 2,048 x 2,048 channels at a serial bit rate of 8.192 Mbps; 1,024 x 1,024 channels at 4.096 Mbps; and 512 x 512 channels at 2.048 Mbps. The device has many features that are programmable on a per stream or per channel basis, including message mode, input offset delay and high impedance output control. Per stream input delay control is particularly useful for managing large multi-chip switches that transport both voice channel and concatenated data channels. In addition, the input stream can be individually calibrated for input frame offset using a dedicated pin. |
Detailed Block Diagram

Typical Applications
- Medium and large switching platforms
- CTI application
- Voice/data multiplexer
- Digital cross connects
- ST-BUS/GCI interface functions
- Support IEEE 802.9a standard
Features & Benefits
- 2,048 x 2,048 channel non-blocking switching at 8.192 Mbps
- Per-channel variable or constant throughput delay
- Automatic identification of ST-BUS/GCI interfaces
- Accept ST-BUS streams of 2.048, 4.096 or 8.192 Mbps
- Automatic frame offset delay measurement
- Per-stream frame delay offset programming
- Per-channel high impedance output control and message mode
- Control interface compatible to Motorola non-multiplexed CPUs
- Connection memory block programming
- 3.3 V local I/O with 5 V tolerant inputs and TTL-compatible outputs
- IEEE-1149.1 (JTAG) Test Port
Resources
Documentation
Application Notes
Product Previews
Downloads, Firmware and Drivers
- BSDL Files:
- mt90823-plcc.bsd
- mt90823-bga.bsd
- IBIS Models:
- mt90823ap.ibs
- mt90823al.ibs
- mt90823ag.ibs
Product Packaging & Availability
Part Number | Package Type | Pin Count | Lead-Free Option | Shipping Option(s) | Status |
---|---|---|---|---|---|
MT90823AB1 | LQFP | 100 | Pb-free-Matte Tin | Trays | Production |
MT90823AG | PBGA | 120 | Trays. Bake & Drypack | Package discontinue. Moved to Pb-free | |
MT90823AG2 | PBGA | 120 | Pb-free-Tin/Silver/Copper | Trays | Package EOL. See PDN160525 |
MT90823AL1 | MQFP | 100 | Pb-free-Matte Tin | Trays | Production |
Packaging Information
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