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Features
- Fully Isolated 2-Wire Line Interface with FCC68 or CTR21 DAA
- Modem Calling/Answering and CLI Firmware
- Full Access to Unused (850) 80C51 Ports
- 'AT' Command Compatible Firmware
- Control via PC Terminal Emulator
- Opto-Isolated Ring Detect Circuitry and OptoMOS Hook Relay
- Keyboard Encoder
- 8k byte Internal RAM
- 4M bit External FLASH
- 64k byte External RAM
- On-Board FLASH Reprogramming
- Separate Dual Analogue-to-Digital Inputs
- Dual Low-Power PWM Outputs
- User's Prototyping Area
- Provision for Optional Telco-Specific Components
- V.22bis, V.22, V.23, V.21 (and Bell Equivalents) Integral Modem
Applications
- For Evaluation and Investigation of CMX850 Product
Package Styles:
NA
Supply Requirement:
NA
Description
The EV8500 EvKit comprises a single board containing a CMX850 Communications Controller (80C51 core and V.22 bis Modem IC), line interface components and a serial communications port for interfacing to a PC. Firmware is provided to implement a standard AT commands interface which is used to control the evaluation board via a standard terminal emulator. PC software is provided to support serial downloading of firmware updates to the evaluation kit.
The board is powered from a single 3 3.6V dc power supply. Removal of jumpers allows the user to measure device current. Important signals can be monitored via test points and header pins.
The evaluation board has a 2-wire line interface to provide line matching and dc isolation. This 2-wire interface is connected to the line using an OptoMOS relay. Where components are telco-specific (line impedance, line protection, etc.) space is provided for the user to add appropriate components.
The EV8500 EvKit comprises a single board containing a CMX850 Communications Controller (80C51 core and V.22 bis Modem IC), line interface components and a serial communications port for interfacing to a PC. Firmware is provided to implement a standard AT commands interface which is used to control the evaluation board via a standard terminal emulator. PC software is provided to support serial downloading of firmware updates to the evaluation kit.
The board is powered from a single 3 3.6V dc power supply. Removal of jumpers allows the user to measure device current. Important signals can be monitored via test points and header pins.
The evaluation board has a 2-wire line interface to provide line matching and dc isolation. This 2-wire interface is connected to the line using an OptoMOS relay. Where components are telco-specific (line impedance, line protection, etc.) space is provided for the user to add appropriate components.
| EV8500 | Software Status | Remarks | Download |
Software and User Manual [Zip] |
Refer
to file EK8500_7.doc for further information [in Zip] |