CS8130-CSZR

Specialized Overview

The CS8130 is a multi-standard infrared transceiver integrated circuit manufactured by Cirrus Logic. It operates from power supplies ranging from +2.7V to +5.5V and supports data rates from 1200bps to 115kbps. The device integrates a high-gain PIN diode amplifier, decoder for IrDA, HPSIR, ASK, and TV remote formats, and an encoder with LED drivers. It features programmable transmit LED power and receive threshold levels. The component is housed in a 20-pin SSOP package measuring 5x7mm.

Specialized Feature Summary

• Supports multiple infrared transmission standards including IrDA, HPSIR, 500kHz ASK, and 38kHz TV remote modes.
• Integrates on-chip high gain PIN diode amplifier and data pulse stretcher for the receive channel.
• Includes programmable transmitter driver and receiver threshold settings for system optimization.
• Provides direct access mode allowing external encoding and decoding bypass.

Specialized Applications

• Infrared port implementation for standard UART interfaces
• TV remote control signal reception and transmission
• Industrial equipment using HPSIR communication protocols

Specialized Procurement Notes

Verify the manufacturer origin as this component was originally produced by Crystal Semiconductor Corporation before acquisition by Cirrus Logic. Confirm the specific ordering suffix matches the required package variant. Check current availability status as legacy components may have limited supply chains or require alternative sourcing strategies.

Specialized Selection Notes

Select the CS8130 when a single IC solution is required for mixed infrared protocol environments. Ensure the design accommodates external PIN diodes and transmit LEDs as these are not integrated on-chip. Verify that the host system provides a standard UART interface compatible with the specified baud rate range of 1200 to 115200 bps.

Specialized Part Context

This component belongs to the family of infrared transceiver ICs designed for serial communication links. It serves as a bridge between digital UART logic and analog infrared optical signals. The device consolidates modulation, demodulation, and amplification functions typically handled by discrete components into a single package.

Specialized Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Due to the legacy nature of the product and potential obsolescence, verify compatibility with existing firmware and hardware constraints before considering any functional equivalents.

Specialized FAQ

What clock frequencies are supported by the CS8130?

The CS8130 supports primary clock frequencies of 3.6864 MHz and 1.8432 MHz. A 3.6864 MHz crystal can be used directly, or a 1.8432 MHz clock can be input and doubled internally.

How is the receive sensitivity adjusted?

Receive sensitivity is adjusted via programmable threshold levels controlled through the internal registers. This allows a trade-off between noise immunity and reliable transmission distance.

Can the CS8130 operate without its internal oscillator?

Yes, an external clock signal can be applied to the EXTCLK pin. In this configuration, the XTALIN pin must be grounded and XTALOUT left floating.