A high-quality DTMF decoder with excellent immunity to falsing on voice and a standard DTMF encoder are included. Alternatively, these blocks can be used to transmit and detect user-specific, programmed single and dual-tone signals, simple melodies, call progress signals or modem calling and answering tones.
Host control and data transfer is via a high-speed serial bus that operates in normal and Powersave modes and which is compatible with most simple types of µC serial interface. An embedded USART allows multi-format asynchronous data and unformatted synchronous data to be received or transmitted as 8-bit bytes.
The CMX865A operates from a single 3.0V to 3.6V supply over a temperature range of -40°C to +85°C and is available in 16-pin SOIC (D4) and 16-pin TSSOP (E4) packages.
Features
- V.23 1200/75, 1200/1200, 75, 1200 bps FSK
- Bell 202 1200/150, 1200/1200, 150, 1200 bps FSK
- V.21 or Bell 103 300/300 bps FSK
- V.21 or Bell 103 300/300 bps FSK
- Low Voice Falsing DTMF Decoder
- DTMF/Tones Transmit and Receive
- Low Power - High Performance
Voltage: | 3.0 to 3.6 VDC |
---|---|
Form factor: | 16-pin SOIC |
Temperature: | -40 to +85 °C |
Dimensions: | 10.26 x 10.27 x 2.45 mm |
Current: | 4.0 mA |
Packaging: | Tape&Reel |
Reference Frequency Input: | 6.144MHz |
Signal IO format: | V.21/Bell 103, Bell 202, V.23, FSK |
Input Bandwidth: | 300 to 3300 Hz |
Baud Rate: | 1200 |
C-BUS (SPI) Control Interface: | yes |