CM-i686M Computer-On-Module
In EOL phase, see expected life time. Users are advised to consider CM-iGLX as replacement.
Description
The CM-i686M Computer-on-Module is a tiny single board computer, designed to serve as a building block in embedded applications. The CM-i686M has all the components needed to run operating systems such as Windows, Linux or VxWorks. Ready packages for these operating systems are available from CompuLab.
The CM-i686M is both small and inexpensive. Its small size allows integration into hand-held and mobile applications, providing a powerful computing core. Its extremely low price makes it an ideal selection for cost-sensitive applications. Based on AMD’s GeodeTM processor, the CM-i686M provides excellent price/functions/performance in comparison with any other PC-compatible embedded system.
The feature set of the CM-i686M module combines a 64-bit memory architecture, Flash Disk and essential computing peripherals. For embedded applications, the CM-i686M provides a 32-bit PCI bus, 100Mbit Ethernet, serial ports, general purpose I/O lines and many other essential functions.
The standardized CAMI (CompuLab’s Aggregated Module Interface) connectors allow interchangeability with other CompuLab’s Computer-on-Module’s, enabling the flexibility required in a dynamic market where application requirements can change rapidly.
Software support for the CM-i686M includes ready-to-run packages for:
* Linux
* Windows CE and XP
* VxWorks
* DOS
Features
- Full-featured Embedded PC on module
- 58 x 68 mm – smaller than a credit card !
- NS Geode CPU : x86 architecture, 266/300 MHz, 16 KB cache, FPU, MMX
- PCI, LPC, AC97 and ISA expansion busses
- 32 – 128 Mbyte SDRAM
- 1 – 512 Mbyte Flash Disk
- Graphics Controller with interface for TFT panels, NTSC/PAL TV and RGB color monitors see LCD panel support
- Video Input port
- Host USB ports
- Sound codec with speaker and microphone support (optional)
- Standard peripherals: serial ports, LPT port, I/O ports, FDC, PS/2 keyboard and mouse, IrDA, HDD interface (optional)
- 10/100BaseT Ethernet port (optional)
- Power consumption below 5W
- Interchangeable with other CORE modules via CAMI connectors
Geode is registered trademark of AMD Corp.
Block diagrams
Specifications
CPU & Core Logic
| Feature | Specifications | Option |
|---|---|---|
| CPU Type | NS Geode SC1200 / SC2200 or SC3200 | + |
| CPU Features | 266 or 300 MHz, FPU, MMX, Pentium MMX instruction set | + |
| Internal Bus | 64-bit, 100 MHz | + |
| Cache | 16 KB unified L1 cache, WB | + |
| JTAG Port | Available | + |
| PC core logic | DMA controller, Interrupt controller, Timers | + |
| RTC | Real Time Clock, powered by external lithium battery | + |
| Power Management | ACPI 1.0 controller | + |
| Watchdog | Interfaces to INTR, SMI, Reset | + |
| Feature | Specifications | Option |
|---|---|---|
| DRAM | SDRAM 32 - 128 MB, 100 MHz, 64-bit, UMA | D |
| NOR Flash Disk | 1 - 4 Mbytes | F |
| NAND Flash Disk | 16 - 512 Mbytes, optional | N |
| I/O Tolerance | 3.3 Volt on all lines except SIO, 5 Volt on Super-I/O lines | + |
| External Buses | PCI, LPC, ISA subset, AC97 | + |
| PCI bus | 32-bit, Rev 2.1 compliant, arbiter for 2 masters | + |
| LPC bus | Host, 33 MHz, LPC v1.0 compatible | + |
| ISA bus | Minimal essential ISA signals subset. Shared with PCI | + |
| AC97 | AC97 / AMC97 Rev 2.0 compliant | + |
| Feature | Specifications | Option |
|---|---|---|
| Graphics Controller | Resolution up to 1280 x 1024, up to 16 bpp Frame buffer in system memory TFT, NTSC-M & PAL-M/B/D/G/H/I/N and RGB interface options Frame buffer driver for STN panels with built-in controller | G |
| Video Input | CCIR656 Direct Video, separate video buffer for optimal MPEG | G |
| USB | 3 Host USB ports, 1.5 / 12 Mbps, OHCI v-1.0 compliant | + |
| Serial Port (UART) | 16550 compatible, up to 1.5 Mbps COM-A - RS232 full, COM-B - TTL, Rx/Tx COM-E - TTL, Rx/Tx only, shared with IR COM-C, COM-D - TTL, full | + + S |
| General Purpose I/O | 26 lines, shared with other functions | S |
| Hard Disk Interface | IDE, UDMA-33, up to 2 devices | + |
| LPT - Parallel Port | Bi-directional with EPP mode. ESD protection and filters | S |
| Floppy Disk Interface | Options for direct interface or through parallel port (LPT) | S |
| Keyboard Interface | PS/2 or redirection from COM port | S |
| Mouse Interface | PS/2 | S |
| Infrared Port | One or two ports, IrDA 1.1 & Consumer IR, up to 4 Mbps | + |
| A/D Converters | 6 channels, 8-bit, 0-4V input range | S |
| Ethernet | Realtek 8139, MAC & PHY, 10/100BaseT, Activity LED's | E |
| Audio codec | AC97 interface, mono microphone input, stereo line input and 25 mW output for active speakers | A |
| ACCESS.bus | I2C | + |
