Epson SCE8720C Series User manual

MF1286-02
SEIKO EPSON CORPORATION
CARD-PCI/GX
Hardware Manual

NOTICE:
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©SEIKO EPSON CORPORATION 2000 All rights reserved.
CompactFlash is a trademark of Sandisk Corporation in U.S.A. CompactFlash is licensed
to CFA (CompactFlash Association).
Windows and Windows NT are registered trademarks of Microsoft Corporation in U.S.A.
Geode is a trademark of National Semiconductor Corporation in U.S.A.
PC/AT is a registered trademark of International Business Machines in U.S.A.
All other product names mentioned herein are trademarks and/or registered trademarks of
their respective companies.

CARD-PCI/GX Hardware Manual
Rev.A EPSON i
CONTENTS
CONTENTSCONTENTS
CONTENTS
1.
1.1.
1. Overview
OverviewOverview
Overview ................................
................................................................
................................................................
................................................................
................................................................
................................................................
.........................................................
..................................................
.........................1
11
1
1.1 System Overview.............................................................................................................2
1.2 Basic Specification .......................................................................................................... 3
1.3 BIOS ................................................................................................................................5
1.4 Memory map....................................................................................................................6
1.5 I/O map............................................................................................................................7
1.6 DMA controller.............................................................................................................. 13
1.7 System interrupts ......................................................................................................... 14
1.8 Timer counter................................................................................................................ 15
1.9 Real time clock and C-MOS RAM.................................................................................16
2.
2.2.
2. Mechanical specifications
Mechanical specificationsMechanical specifications
Mechanical specifications................................
................................................................
................................................................
................................................................
..............................................................
............................................................
.............................. 17
1717
17
2.1 Dimensions and weight................................................................................................. 17
2.2 Installation method....................................................................................................... 17
3.
3.3.
3. Interface specifications
Interface specificationsInterface specifications
Interface specifications................................
................................................................
................................................................
................................................................
................................................................
................................................................
..................................
....
.. 18
1818
18
3.1 Pin configuration........................................................................................................... 18
3.1.1 280-pin connector pin configuration ...................................................................... 19
3.1.2 20-pin connector pin configuration........................................................................ 19
3.2 Signal characteristics.................................................................................................... 21
3.3 Descriptions on signal functions...................................................................................27
3.3.1 PCI bus...................................................................................................................27
3.3.2 LIMITED ISA bus.................................................................................................. 28
3.3.3 LCD........................................................................................................................30
3.3.4 CRT ........................................................................................................................31
3.3.5 Hard disk (IDE) ..................................................................................................... 31
3.3.6 USB........................................................................................................................31
3.3.7 Serial interfaces..................................................................................................... 32
3.3.8 Parallel interfaces.................................................................................................. 33
3.3.9 Keyboard/mouse .................................................................................................... 35
3.3.10 AC97 interfaces...................................................................................................... 35
3.3.11 Power management............................................................................................... 36
3.3.12 Power supply.......................................................................................................... 37
3.3.13 FDD........................................................................................................................ 37
4.
4.4.
4. Detailed description of interfaces
Detailed description of interfacesDetailed description of interfaces
Detailed description of interfaces................................
................................................................
................................................................
................................................................
..................................................
....................................
.................. 38
3838
38
4.1 CRT, LCD.....................................................................................................................38
4.2 Hard disk ..................................................................................................................... 40

CARD-PCI/GX Hardware Manual
ii EPSON Rev.A
4.3 FDD.............................................................................................................................. 41
4.4 Keyboard/mouse........................................................................................................... 42
4.5 Parallel port................................................................................................................. 43
4.6 Serial port .................................................................................................................... 44
4.7 USB.............................................................................................................................. 44
4.8 Speaker ........................................................................................................................ 45
4.9 PCI ............................................................................................................................... 45
4.10 LIMITED ISA .............................................................................................................. 46
4.11 RTC .............................................................................................................................. 46
5.
5.5.
5. Power management
Power managementPower management
Power management ................................
................................................................
................................................................
................................................................
................................................................
................................................................
.......................................
..............
....... 47
4747
47
5.1 Power ON/OFF............................................................................................................. 47
5.2 Standby mode .............................................................................................................. 47
5.3 Power supply................................................................................................................47
5.4 Power sequence............................................................................................................ 49
5.4.1 Power sequence (for power supply which is turned ON/OFF from the software)........... 49
5.4.2 Power sequence (for power supply which is not turned ON/OFF from the software) ..... 51
6.
6.6.
6. Electrical characteristics
Electrical characteristicsElectrical characteristics
Electrical characteristics................................
................................................................
................................................................
................................................................
...............................................................
..............................................................
............................... 52
5252
52
6.1 Absolute maximum rating........................................................................................... 52
6.2 Recommended operating condition............................................................................. 52
6.3 DC characteristics (under recommended operating condition).................................. 53
6.3.1 PCI bus...................................................................................................................53
6.3.2 LIMITED ISA bus.................................................................................................. 53
6.3.3 LCD........................................................................................................................54
6.3.4 CRT ........................................................................................................................54
6.3.5 FDD........................................................................................................................55
6.3.6 IDE......................................................................................................................... 55
6.3.7 Serial port .............................................................................................................. 56
6.3.8 Parallel port........................................................................................................... 56
6.3.9 Keyboard/mouse .................................................................................................... 57
6.3.10 USB........................................................................................................................ 57
6.3.11 Power management signal .................................................................................... 57
6.3.12 AC97....................................................................................................................... 58
6.3.13 Other signals.......................................................................................................... 59
6.4 Current consumption................................................................................................... 60
6.4.1 Maximum current value........................................................................................ 60
6.4.2 Typical current value 1 ......................................................................................... 60
6.4.3 Typical current value 2 ......................................................................................... 61

CARD-PCI/GX Hardware Manual
Rev.A EPSON iii
6.4.4 Standby current..................................................................................................... 61
7.
7.7.
7. AC characteristics
AC characteristicsAC characteristics
AC characteristics................................
................................................................
................................................................
................................................................
................................................................
................................................................
..........................................
....................
.......... 62
6262
62
7.1 PCI timing.................................................................................................................... 62
7.2 USB timing .................................................................................................................. 62
7.3 LIMITED ISA timing................................................................................................... 62
7.3.1 Memory, I/O read cycle timing.............................................................................. 62
7.3.2 Memory, I/O write cycle timing............................................................................. 64
7.4 AC97 timing.................................................................................................................65
7.5 TFT timing...................................................................................................................65
8.
8.8.
8. Cautions on use
Cautions on useCautions on use
Cautions on use ................................
................................................................
................................................................
................................................................
................................................................
................................................................
.............................................
..........................
............. 66
6666
66
Appendix
AppendixAppendix
Appendix A.
A.A.
A. Peripheral circuit design
Peripheral circuit designPeripheral circuit design
Peripheral circuit design ................................
................................................................
................................................................
................................................................
..............................................
............................
.............. 67
6767
67
A.1 IO extension of PCI bus...............................................................................................67
A.1.1 Number of PCI devices..........................................................................................67
A.1.2 PCI device No. and wiring method for interrupts................................................ 68
A.1.3 Connection of 5V device to PCI bus...................................................................... 69
A.2 IO extension of LIMITED ISA bus.............................................................................. 70
A.2.1 Address decoding................................................................................................... 70
A.2.2 Pull-up of SD/SA[7:0]............................................................................................. 70
A.2.3 SA[15:0] latch ........................................................................................................ 71
A.2.4 Number of ISA slots ..............................................................................................71
A.2.5 Pull-up resistance of IOCHRDY............................................................................ 71
A.2.6 SMEMR# and SMEMW# generation ....................................................................72
A.2.7 MEMCS16# generation ......................................................................................... 72
A.3 Power supply design: Power control circuit................................................................ 73
A.3.1 Power not requiring ON/OFF by software............................................................73
A.3.2 Power requiring ON/OFF by software.................................................................. 74
A.3.3 Cautions on compatibility of CARD-PCI .............................................................. 75
A.3.4 Wake on LAN signal.............................................................................................. 75
A.4 Cautions on artwork design ........................................................................................ 76
A.4.1 Power supply line .................................................................................................. 76
A.4.2 Address bus and data bus .....................................................................................77
A.4.3 PCI signal .............................................................................................................. 77
A.4.4 Clock signal............................................................................................................ 77
A.4.5 CRT RGB signal..................................................................................................... 78
A.4.6 Reset signal............................................................................................................ 78
Appendix
AppendixAppendix
Appendix B.
B.B.
B. Timing examples of power management signals
Timing examples of power management signalsTiming examples of power management signals
Timing examples of power management signals................................
................................................................
..........................................
....................
.......... 79
7979
79

CARD-PCI/GX Hardware Manual
Rev.A EPSON 1
1.
1.1.
1. Overview
OverviewOverview
Overview
SCE8720Cxx (CARD/PCI/GX) is the first product in SEIKO EPSON’s CARD-PCI series
equipped with the PCI bus. With the PCI bus, ability of enhancement, which enables
various PCI devices to be connected, is realized.
By utilizing the Geode 200 MHz low voltage product, which comprises CPU core, and the
companion chip manufactured by National Semiconductor, low power consumption, low
cost and high quality display (CRT1280 ×1024, 256-color) are all realized. Especially, this
low power consumption capability is one of the most important aspects to realize fan-less,
which is required in applications requiring high liability.
All these capabilities are provided within a compact size of 101.6 ±1.0 ×63.5 ±0.3 ×16.0 ±
1.0 (mm) with 280-pin and 20-pin interface connectors.
Because SCE8720C can easily enable the core capabilities of IBM PC/AT, including BIOS,
users can drastically decrease system development manpower and period.
In addition, future CARD-PCI series will also be able to be used with the same main board
only requiring consideration on the card’s mounting area and power supply.

CARD-PCI/GX Hardware Manual
EPSON Rev.A
2
1.1 System Overview
SCE8720Cxx (CARD-PCI/GX) is provided with almost all the functions usually equipped
on a mother board. These functions are accessed via the 280-pin main connector and 20-
pin connector.
As for 280-pin connector, manufacturer’s genuine part is utilized. Functions accessed via
the 280-pin connector are PCI extended bus, CRT or TFT LCD panel display, 2-channel
USB, primary IDE, LIMITED ISA extended bus (*1), keyboard and mouse, 2-channel
serial/parallel port and AC97 interface. FDD and a part of interrupt of ISA are accessed
via the 20-pin connector.
SCE8720Cxx has Geode GX-LV 200MHz (CPU CHIP), Geode CS5530 (Companion chip),
97317 (Super IO) all built-in. As the main memory, SCE8720Cxx has a 32MB or 64MB of
synchronous D-RAM and has utilized the unified memory method, in which a part of the
synchronous D-RAM is used as the display memory. Generally, it is said that the unified
memory method results in low-performance. However, with SCE8720Cxx, high
performance is realized by compressing the data for display refreshing. In addition,
SCE8720Cxx has a built-in CPU core power regulator (VRM) and a built-in CLOCK
generator with built-in PLL. (*1: LIMITED ISA = ISA with limited capability)
Geode GXLV
(CPU&North)
200MHz 2.2V
CS5530
(South&display)
PC97317(Super IO)Flash BIOS
256KB
SDRAM
32/64MB
Main
Memory&
V-RAM
280pin
Connector
20pin
Connector
Clocks VRM
PCI expansion
AC97
CRT
TFT
USB*2CH
IDE
LIMITED ISA expansion
KB/MOUSE
Serial*2CH
Parallel
FDD
Figure1.1 Block diagram of SCE8720Cxx

CARD-PCI/GX Hardware Manual
Rev.A EPSON 3
1.2 Basic Specification
Item Specifications
CPU Geode GXLV 200MHz (Manufactured by National
Semiconductor)
(Cache memory 16KB built-in, FPU built-in)
Main memory Synchronous DRAM 32MB/64MB
System ROM 256KB
(System BIOS + VGA BIOS + Power management BIOS)
Companion chip Geode CS5530 (Manufactured by National Semiconductor)
(Graphic control, IDE AC97 etc.)
Graphic function RAM Maximum 4MB (using a part of synchronous DRAM)
CRT 60Hz (Max. XGA: 64K-color or SXGA: 256-color)
TFT 18/12/9-bit TFT panel support (Max. XGA 64K-color)
STN cannot be used.
I/O interface
PCI 3.3V PCI Version 2.1 Compliance (33MHz)
PCI device 3 PCI master 2
LIMITEDISA No DMA or Master function provided. As for AB0-15, multiplex
output to DB.
Some signals have been deleted as well.
Parallel 1-port SPP, ECP, EPP (rev1.9/1.7) supported.
Serial 2-port (16550 compatible) Max.1.5Mbaud
HDD(IDE) 1 device (ANSI ATA_4 Compliant)
FDD 1 device (720/1.44MB 2mode, 3.5”)
Keyboard 1PS/2-compatible
Mouse 1PS/2-compatible
USB 2-port, USB Revision 1.0 compliant
Speaker PC beep
AC97 Version 2.0
Super I/O PC97317 (Manufactured by National Semiconductor)
RTC MC146818A-compatible, built in Super I/O.
Clock buffer MK1491-06 (Manufactured by ICS)
Outside dimensions 101.6±1.0×63.5±0.3×16.0±1.0 (mm)
Weight Approx. 82g

CARD-PCI/GX Hardware Manual
EPSON Rev.A
4
Operation environment (temperature ranges)
Maximum temperature [Tc = 75°C right above the heat sink, and Ta = 70°C around the
SDRAM]
Minimum temperature Ta = 0°C
Figure 1.2 Temperature measurement position
Storage environment Temperature -20 to 75°C (no condensation)
Humidity 0to90%(nocondensation)
Current consumption Maximum rating 7.1W
Power supply specifications (the following power supply is required.)
The following operational values are measured when Windows 98 is running and
desktop is displayed.
CPU_VRM power supply (VCCCORE) 5V
Current consumption Typ. 408mA
Standby current Typ. 17.2 mA
System power (VCC3V)3.3V
Current consumption Typ. 620 mA
Standby current Typ. 230 mA
ISA bus power supply (VCC5V)5V
Current consumption Typ. 17.1 mA
Standby current Typ. 11.5 mA
5V standby power (VCCSTB) 5V
(Power of 5V is always supplied regardless of the ON/OFF of the power
supply.)
Current consumption Typ. 0.35 mA
Backup power (VCCBAK) 2.7 to 3.6V (voltage supplied by battery)
Current consumption Typ. 1.2 µA
(WhenholdingtheC-MOSmemorycontentsbythebattery)
1
2
2
1: Heat sink on CPU
2: Ta around DRAM (peripheral temperature)

CARD-PCI/GX Hardware Manual
Rev.A EPSON 5
 Power management
Power ON (PME0#, 1#, power SW)
Power OFF (Soft OFF)
Standby mode
1.3 BIOS
SCE8720C has adopted AWARD BIOS manufactured by Phoenix. It has the power
management and plug-and-play functions. With the BIOS setup menu, many
configuration parameters can be set.
The Video BIOS is also stored in the same ROM.