LE58083A
Codec/Filter SLAC Device
Product is discontinued and not allowed for new designs.
Overview
| The Le58083A Octal Low Voltage Subscriber Line Audio-Processing Circuit (Octal SLAC) devices integrate the key functions of analog line cards into high-performance, very-programmable, eight-channel codec-filtered devices. |
Detailed Block Diagram
Features & Benefits
- Low-power, 3.3 V CMOS technology with 5 V tolerant digital inputs
- Pin programmable PCM/MPI or GCI interface
- Software and coefficient compatible to the VE580 series QLSLAC devices
- Standard PCM/microprocessor interface (PCM/MPI mode)
- Single or Dual PCM ports available
- Time slot assigner (up to 128 channels per port)
- Clock slot and transmit clock edge options
- Optional supervision on the PCM highway
- 1.536, 1.544, 2.048, 3.072, 3.088, 4.096, 6.144, 6.176 or 8.192 MHz master clock derived from MCLK or PCL
- µP access to PCM data
- Real Time Data with interrupt (open drain or TTL)
- Broadcast mode
- General Circuit Interface (GCI mode)
- Control and PCM data on a single port
- 2.048 Mbits/s data rate
- 2.048 MHz or 4.096 MHz clock option
- Performs the functions of eight codec/filters
- Software programmable:
- SLIC device input impedance and Transhybrid balance
- Transmit and receive gains and Equalization
- Programmable Digital I/O pins with debouncing
- A-law, µ-law, or linear coding
- Built-in test modes with loopback, tone generation, and µP access to PCM data
- Mixed state (analog and digital) impedance scaling
- Performance guaranteed over a 12 dB gain range
- Supports multiplexed SLIC device outputs
- 256 kHz or 293 kHz chopper clock for SLIC devices with switching regulator
- Maximum channel bandwidth for V.90 modems
