1. Manuals
  2. Brands
  3. CML Microcircuits Manuals
  4. Motherboard
  5. EV8810
  6. User manual

CML Microcircuits EV8810 User Manual

Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this manual
CML Microcircuits
COMMUNICATION SEMICONDUCTORS
UM8810/2
October 2009
1.0

Features

• CMX881, CMX882 and CMX883 Signalling
Processor Evaluation
• Evaluate Selcall, CTCSS, XTCSS, DCS,
FFSK/MSK, and Voice Functions
• TSSOP Device Socket Provided on Board
1.1

Brief Description

The EV8810 Evaluation Kit has been designed for the purpose of evaluating the CMX88x family of
devices. This family includes the CMX881, CMX882 and CMX883 Signalling Processors. The board
interfaces to the parallel port of an IBM compatible PC, running the supplied application software under
Windows 95, 98, ME and NT 4.0 operating systems. The on-board PIC Microcontroller is a Flash device
and can be reprogrammed via the controlling PC with the included programming software. Both the
CMX88x target device and the Flash PIC are socketed, for easy replacement. This evaluation kit is
supplied without any CMX88x target device. Samples of these should be obtained separately from your
local CML distributor.
The on-board audio power amplifier and 3.5mm jack socket can be used to connect an external
loudspeaker, and voice input can be handled via the on-board electret microphone. A user prototyping
area is also included.
The board requires a regulated 5.0Vdc supply rail for the PIC Microcontroller and another regulated
supply rail for the device voltage, which can range from 2.7Vdc to 5.5Vdc, depending on which CMX88x
device the user fits. These can be provided by one dual rail power supply or two single rail power
supplies.
© 2009 CML Microsystems Plc
Evaluation Kit
User Manual
• PC Controlled via Parallel Port
Interface
• On-board Reprogrammable FLASH
PIC Microcontroller
• PC Software Supplied
EV8810
Provisional Issue

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the EV8810 and is the answer not in the manual?

Questions and answers

Related Manuals for CML Microcircuits EV8810

Summary of Contents for CML Microcircuits EV8810

  • Page 1: Features

    • PC Software Supplied Brief Description The EV8810 Evaluation Kit has been designed for the purpose of evaluating the CMX88x family of devices. This family includes the CMX881, CMX882 and CMX883 Signalling Processors. The board interfaces to the parallel port of an IBM compatible PC, running the supplied application software under Windows 95, 98, ME and NT 4.0 operating systems.

  • Page 2: Table Of Contents

    EV8810 Evaluation Kit EV8810 CONTENTS Section Page Features ....................1 Brief Description ..................1 Preliminary Information................4 1.2.1 Laboratory Equipment............... 4 1.2.2 Handling Precautions ..............4 Quick Start ....................5 1.3.1 Setting-Up ................... 5 Signal Lists ....................6 Board Layout ..................10 Detailed Description ................
  • Page 3 EV8810 Evaluation Kit EV8810 EV8810 Power Supply Parallel Port Cable Figure 1 Interconnection Diagram © 2009 CML Microsystems Plc UM8810/2...

  • Page 4: Preliminary Information

    EV8810 Evaluation Kit EV8810 Preliminary Information 1.2.1 Laboratory Equipment The following equipment is needed to use this evaluation kit: 1.2.1.1 A regulated, multiple output power supply to provide 5Vdc for the PIC Microcontroller and a device voltage in the range 2.7Vdc to 5.5Vdc. Alternatively two regulated, single output supplies with the same output voltage requirements as for the multiple output supply.

  • Page 5: Quick Start

    Ensure that all jumpers are fitted to the evaluation board in accordance with the settings shown in section 1.4. Attach a 25-way parallel port cable between connector J8 on the EV8810 board and the parallel port of the PC. The board is equipped with a TSSOP socket, which is designed to take an E1 packaged device.

  • Page 6: Signal Lists

    EV8810 Evaluation Kit EV8810 Signal Lists Connector Pinouts Connector Connector Signal Signal Description Pin no. Name Type Output 3.5mm jack socket - Output from the on-board audio power amplifier. Can be used to connect an external loudspeaker. DEMODIN Input IDC 16-way male header - Connects to the input of the CMX88x discriminator amplifier.
  • Page 7 EV8810 Evaluation Kit EV8810 Connector Pinouts (continued) Connector Connector Signal Signal Description Pin no. Name Type MICROPHONE Output IDC 14-way male header - Connects to the output of the on-board electret microphone. BUF1IN Input IDC 14-way male header - Connects to the non-inverting input of the first on-board op-amp.
  • Page 8 EV8810 Evaluation Kit EV8810 Jumper and Link Settings Jumper Default Positions Description position 1 - 2 Remove and connect multimeter to measure device current consumption (digital supply rail). 1 - 2 Remove and connect multimeter to measure device current consumption (analogue supply rail).

  • Page 9: Test Points

    EV8810 Evaluation Kit EV8810 Test Points Test Signal name Description point DISC_FB Feedback taken from the CMX88x discriminator input amplifier. ALERTPC Interrupt line from the PIC to the parallel port. When the CMX88x pulls its IRQN low the PIC produces an interrupt, which comprises a positive (rising) edge transition.

  • Page 10: Board Layout

    EV8810 Evaluation Kit EV8810 Board Layout For clarity, the circuit schematics are available as separate, high-resolution files. Figure 2 Top Silk Screen © 2009 CML Microsystems Plc UM8810/2...
  • Page 11 EV8810 Evaluation Kit EV8810 Figure 3 Bottom Silk Screen © 2009 CML Microsystems Plc UM8810/2...

  • Page 12: Detailed Description

    Detailed Description 1.6.1 Hardware Description 1.6.1.1 Operating Voltage The EV8810 board requires two operating voltages. DVIN is set at 5Vdc and AVIN is set within the range 2.7Vdc to 5.5Vdc. 1.6.1.2 I Measurement Device currents can be measured for both the analogue and digital supplies. To measure the digital supply current remove jumper JP1, connect a multimeter set to meaure dc current across the jumper pins and apply the supply voltages.

  • Page 13: Low Voltage Programming Of The Pic

    1.6.2 Low Voltage Programming of the PIC The PIC16LF877-20/SP Flash Microcontroller that is fitted to the EV8810 kit has been pre- programmed by CML before shipment with the latest version of firmware (EF8810xx.hex, where xx represents the version number). Please read the separate information sheet (EK8810) and check the CML web site (www.cmlmicro.com/products/evkits/) for firmware status.
  • Page 14 EV8810 Evaluation Kit EV8810 Each edit box contained within the Write Only group box corresponds to a write only register within the device. The entered value will be either a 2 or 4 digit hexadecimal value, which is dependent on the length of the register (8 or 16 bit). The check boxes positioned adjacent to each edit box control which registers are written.
  • Page 15 EV8810 Evaluation Kit EV8810 Start Tx/Rx Writes the currently displayed value in the Mode Control register edit box to the Mode Control register. This puts the device into the programmed transmit or detect mode. All other radio buttons with the exception of the Stop Tx/Rx and Read device are disabled.
  • Page 16 EV8810 Evaluation Kit EV8810 1.6.3.1 Text File Format Using text files to populate the main dialog box is a quick and easy way to set up the CMX881, CMX882 or CMX883. The format of the text file is described in this section.
  • Page 17 EV8810 Evaluation Kit EV8810 An example of a text file for use with the CMX882 is shown below. This particular file will set up a CMX882 to transmit a 1981Hz Selcall tone. Lines of text starting with '#' are not normally included in the text file.

  • Page 18: Generic Device Configurations

    EV8810 Evaluation Kit EV8810 1.6.4 Generic Device Configurations This section contains a series of generic register settings for various transmit and receive modes. Selcall transmit B0 - 0x770F B1 - 0x3000 C0 - 0x0F60 C1 - 0x2002 C3 - < position of code in tone table >...
  • Page 19 EV8810 Evaluation Kit EV8810 XTCSS transmit Maintenance tone disabled Maintenance tone enabled B0 - 0x770F B0 - 0x770F B1 - 0x3000 B1 - 0x3000 C0 - 0x0F60 C0 - 0x0F60 C1 - 0x6002 C1 - 0x6002 C2 - < device address >...
  • Page 20 EV8810 Evaluation Kit EV8810 DCS receive 23 bit code (non-inverted) 24 bit code (inverted) B0 - 0x0000 B0 - 0x0000 B1 - 0x0030 B1 - 0x0030 C0 - 0x3060 C0 - 0x3060 C1 - 0x0401 C1 - 0x0201 CE - 0x8400...

  • Page 21: Performance Specification

    EV8810 Evaluation Kit EV8810 Performance Specification 1.7.1 Electrical Performance 1.7.1.1 Absolute Maximum Ratings Exceeding these maximum ratings can result in damage to the Evaluation Kit. Min. Max. Units Supply DVIN - DVSS -0.3 Supply AVIN - AVSS -0.3 Voltage on any pin to DVSS -0.3...
  • Page 22 EV8810 Evaluation Kit EV8810 CML does not assume any responsibility for the use of any circuitry described. No IPR or circuit patent licences are implied. CML reserves the right at any time without notice to change the said circuitry and any part of this product specification.

Table of Contents