PIA-647
Embedded 5x86 CPU Card with ST PC
Client
with CRT SVGA Controller and Flash/ROM or 2 DiskOnChip Disk |

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Description
ST PC Client : EmBedded Pentium Performance
SGS-THOMSON Microelectronics developped the ST PC Client to be the first
"Single Chip Multimedia Computer".
Next to a Pentium performance x86 core it offers an
64-bit DRAM-Controller, Standard Chipset functions (Interrupt-Controller, DMA-Controller,
Counter / Timer), a PCI controller (Master / Slave) and ISA bus controller. The internal
IDE controller allows direct connection of two harddisks. Besides the functions above the
"ST PC Client" also includes a high speed 64-bit VGA controller with a 135 MHz
RAMDAC that allows connection of a CRT monitor.
High Speed I/O
In addition, the PIA-647DV has one PS/2 mouse port, two serial ports
(RS-232 x 1, RS-232/485 x 1), one bi-directional printer port that supports SPP, ECP and
EPP modes.
Flash/EPROM Disk or DISKONCHIP
Two onboard sockets can accept up to 2 MB EPROM or 1 MB Flash memory. Both sockets
can by jumper setting be assigned to hold a DiskOnChip of up to 72 MB.
Watchdog Timer
The watchdog timer optionally monitors system operation. The watchdog timer is
programmable by software. It can either generate an NMI or Reset or can be assigned to a
user specified IRQ.
OEM/ODM : The ST PC Client is a
typical product for custom design. Several functions of the chipset, such as external PCI
bus and PAL/NTSC Video subsystem are not supported by the example board on this page.
Contact us to learn how to develop your on typical board.
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Specifications
- CPU + Chipset +VGA Controller : SGS
ST PC Client
Fully static, 32-bit, 5 stage pipeline, x86 processor with FPU unit up to 66 MHz, 64-bit
internal architecture
- 64-bit graphical controller
- 64-bit DRAM controller
- 64-bit local bus interface at 66/75/120/133 MHz
- 64-bit Windows Accelerator
- PCI 2.1 compliant controller (internal)
- ISA controller with slectable clock
- Enhanced IDE, Scatter/gather and Multi-word DMA
- BIOS : AMI system BIOS
- DRAM Memory:
2 MB up to 64 MB of FP DRAM and EDO DRAM
2 sockets for 72-pin single or double sided SIMM modules
- Bus Interface : ISA and PC/104
- Data Bus : 16-bit
- Bus Speeds : ISA - 8,3 MHz, PC/104 -
8,3 MHz
- DMA Controllers : 8237 x 2
- DMA Channels : 7
- Interrupt Controllers : 8259 x 2
- Interrupt Levels : 15
- Enhanced IDE : supports one port and
up to two hard drives or Enhanced IDE devices of PIO mode 4.
Multi-word DMA mode for fast IDE
- Watchdog Timer :
generates a system RESET or NMI when your application loses control over the system.
Optionally the watchdog can trigger a user specified IRQ. The watchdog is configurable
from 30.5 ms to 512 seconds
(in 30.5 ms segments)
- Keyboard and Mouse Connectors:
Mini DIN connector for AT-keyboard and PS2 Mouse
Internal 5-pin header for AT-keyboard
Internal 5-pin header for PS/2-mouse
High Speed Multi I/O
- Chipset : Winbond W83977F-A
- Serial ports:
one external high speed RS-232 port, one external high speed RS-232/485 port (jumper
selectable).
Both with 16C550 UART and 16 byte FIFO.
BIOS enabled/disabled
- Floppy Disk Drive Interface:
supports up to two floppy drives, 5¼ " (360 KB or 1.2 MB) and 3½ " (720 KB,
1.44 MB). BIOS enabled/disabled
- Bi-directional Parallel Port:
supports SPP, EPP and ECP mode.
Internal PCI Graphics Controller
- Chipset : included in ST PC Client,
64-bit
- Memory : 256 KB ~ 4 MB shared with
system memory
- Display : CRT
- Compatibility : VGA hardware
- OS Support : DOS, Windows, Windows
95, Windows NT,
Windows CE, QNX, OS/2
Onboard Flash/ROM Disk
- Sockets : 2 (DIP type)
- Capacity : 2 MB (EPROM), 1 MB (Flash)
- Memory support :
Flash : SST28SF040 or AT29C040A
EPROM : 27010, 27020, 27040 or 27080
Flash Disk DiskOnChip®
- Package : Single Chip FlashDisk in
32-pin DIP JEDEC
- Capacity : 1-72 MByte capacity
(future capacities: 144 MByte and up)
- Data Reliability : ECC/EDC error
correction
- Memory Window : 8 KByte
Environmental and Power
- Power Requirements: single voltage 5V
@ 2A
- Board Dimensions : 185 (L) x 122 (W)
mm.
- Board Weight : 220 g
- Operating Temperature: -10~+70 °C
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Ordering Information
PIA-647DV: Embedded CPU Card
with ST PC Client including CRT SVGA Controller and 2 sockets for Flash/ROM or
DiskOnChip Flash Disk |