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Appendix A Watchdog Timer .............................................. 40
Appendix B Digital I/O ....................................................... 41
Appendix C Address Mapping ............................................. 42
Appendix D How to Use Wake-up Function......................... 44
3
Appendix E How to Use Video-in Function ......................... 45
Appendix F How to Use LCD-TYPE Function........................ 47
4
1. Introduction
Thank you for choosing NOVA-7820 VIA
& LAN Ethernet Embedded Little Board, which comes equipped with Low
power VIA
®
C3 Processor CPU with the Intel advanced chipset 815E. This
product is designed for the system manufacturers, integrators, or VARs that
want to build a low power consumption system.
NOVA-7820 provides on-chip VGA which provides up to 1600 x 1200
resolution. LCD which provides up to 1024 x 768 resolution.
An advanced high performance super I/O chip – W83627 and NS87366 is
used in the NOVA-7820 board. Which provide four UARTs are compatible
with the NS16C550. The parallel port and FDD interface are compatible with
IBM PC/AT architecture's.
The NOVA-7820 has one Fast Ethernet Multifunction PCI Controller as a LAN
controller, Which are fully integrated 10BASE-T/100BASE-TX LAN solution
with high performance networking functions and low power features.
This board has a built-in Compact Flash Disk Socket, CardBus, FireWire for
embedded applications.
For multimedia application, NOVA-7820 provides many function, such as
1394 ,5.1 channel Audio and video in.
1.1 Specifications
• CPU: VIA
• DMA channels: 7
• Interrupt levels: 15
• Chipset: Intel 815E
• Memory: One 168-pin DIMM sockets. The memory capability is up to
512MB/133MHz.
• Ultra ATA/33/66/100 IDE Interface: One PCI Enhanced IDE channels (2
IDE devices). The south bridge ICH2 supports Ultra ATA/33/66/100 IDE
interface. To support Ultra ATA66/100 Hard disk, a specific cable
(maximum length — 45 cm) is available.
• Floppy disk drive interface: Single 2.88 MB, 1.44MB, 1.2MB, 720KB, or
360KB floppy disk drive.
• Serial ports: Four high-speed 16C550 compatible UARTs with 16-byte
FIFO buffer. Up to 115 Kbps in speed. And one port supports
RS232/422/485 function.
• Parallel Port: One IEEE1284 compatible Bi-directional ports. Supports
SPP/ECP/EPP.
• IrDA: Supports Serial Infrared(SIR) and Amplitude Shift Keyed
IR(ASKIR) interface.
• USB: Supports two USB 1.1 compatible ports.
• Audio: Onboard CMI8738 chipset, Supports 5.1 channel sound, that
include LINEOUT, REAR, and CENTER/BASS.
• Watchdog timer: Software programmable — enable/disabled. Timer
interval is 1 ~ 255 seconds. System Reset will be generated when time
out.
• VGA Controller: Embedded VGA controller. Screen Resolution: up to
®
C3 Processor CPU
®
C3 Processor CPU with Multimedia
5
1600 x 1200 in 256 Colors at 85 Hz Refresh.
• LCD Controller: Onboard SP1015 LCD controller. Screen Resolution: up
to 1024 x 768 36bits.
• Intel 82801BA embedded LAN: IEEE 802.3u Auto-Negotiation support
for 10BASE-T/100BASE-TX. Fast back-to-back transmission support
with minimum interframe spacing. Connected to your LAN through
RJ45 connector.
• Keyboard Controller: 8042 compatible for keyboard and PS/2 mouse
• 4 Digital Inputs and 4 Digital Outputs.
• 4 Channels of composite video input.
• FireWire: TSB43AA22 provides the digital and analog transceiver
functions to implement a two-port node in a cable-based IEEE 1394.
Provides two P1394a fully compliant cable ports at 100/200/400
megabits per second (Mbits/s).
• CardBus: Compliant with CardBus/PCMCIA PC Card 95/97 standard
specification.
• Power Consumption: 5V/3.0A and 12V/0.22A, as running by VIA Eden
ESP 4000(400MHz) and 256MB SDRAM.
In addition to this User Manual, NOVA-7820 package includes the following
items:
• NOVA-7820 Mobile CPU bases Single board computer x 1
• FDD cable x 1
• HDD cable x 1
• Keyboard / Mouse adapter Y cable
• Two RS-232 serial ports and RS-232/422/485 serial port cable x 1
• Printer port cable x 1
• AUDIO ports cable x 1
• 4-channel composite video cable x 2
• IEEE-1394 cable x 1
6
2. Installation
Follow the instructions of installing NOVA-7820. Read the unpacking
information carefully before installation.
2.1 NOVA-7820 Layout
7
8
2.2 Clear CMOS Setup
CMOS RAM holds the configuration data of NOVA-7820, which has to be
set by means of system BIOS. To clear CMOS RAM, close JP1 for about 3
seconds, and then open it again. It will then resume to normal mode.
• JP1: Clear CMOS Setup
JP1 Description
1-2 Keep CMOS Setup
(Normal Operation)
2-3 Clear CMOS Setup
2.3 Compact Flash Setting
Set the operating mode of Compact Flash disk. This is similar to the
operation of hard disk.
• JP2: Compact Flash Setting
JP2 Description
OPEN Slave
Close Master
2.4 Audio Amplifier Select
This jumper is for the setting of Audio Amplifier.
• JP5: Audio L_Line out select
JP5 Description
1-2 OFF
2-3 ON
• JP6: Audio R_Line out select
JP6 Description
1-2 OFF
2-3 ON
9
2.5 LCD Panel Shift Clock/Panel VCC Select
This jumper is for the setting of LCD panel shift clock mode and panel
power voltage.
• JP7: LCD Panel Shift Clock
JP7 Description
1-3 Inverted
3-5 Normal
• JP7: Panel VCC
JP7 Description
2-4 +5V
4-6 +3.3V
2.6 COM Port RI and Voltage Selection
JP8 is setting COM3, 4 RI and Voltage.
• JP8: Set pin 9 of COM3 as signal RI or voltage source
JP8 Description
10-12 COM3 RI Pin Use RI
8-10 COM3 RI Pin Use Voltage
• JP8: Set pin 9 of COM4 as signal RI or voltage source
JP8 Description
9-11 COM4 RI Pin Use RI
7-9 COM4 RI Pin Use Voltage
• JP8: Set pin 9 of COM3 as +5V or 12V
JP8 Description
2-4 COM3 RI Pin Use Voltage +5V
4-6 COM3 RI Pin Use Voltage +12V
• JP8: Set pin 9 of COM4 as +5V or 12V
JP8 Description
1-3 COM4 RI Pin Use Voltage +5V
3-5 COM4 RI Pin Use Voltage +12V
10
2.7 COM4 RS232/RS422(485) Selection
• JP9: Selection COM4 is RS232/RS422(485)
JP9 Description
1-2 RS232
2-3 RS422/485
• JP10: Selection COM4 is RS422/RS485
Description
JP10 1-3 2-4
RS422 OFF OFF
RS485 ON ON
11
3. Connection
This chapter describes how to connect peripherals, switches and indicators to
the NOVA-7820 board. The following table lists the connectors on NOVA-
7820.
Label Description
CDIN1 CD-IN Connector
CN1 Parallel Port Connector
CN2 IDE Connector
CN7 SUS LED
CN8,11 Serial Port 1,2
CN12 ATX Power On/Off Button Connector
CN16 DIN Connector for Keyboard/Mouse
CN20 External Switch and Indicators
CN21,36 IEEE-1394 Connector
CN24 FDD Connector
CN26 ATX Power Connector
CN30 Power Connector
CN32 Audio Connector
CN33 4 Channels of composite video in Connector
CN35 USB Connector
CN37 LAN Connector
CN43 Compact Flash
CN44 CardBus/PCMCIA Connector
CN45 Digital I/O
CN47 LCD Connector
CN48,49 Serial Port 3,4
CON1 VGA Connector
FAN1,3 Fan Connectors
IR1 IrDA Connector
PCI1 Specific PCI Slot
12
3.1 Floppy Disk Drive Connector
NOVA-7820 board is equipped with a 34-pin daisy-chain driver connector
cable.
You can attach one IDE (Integrated Device Electronics) hard disk drives to
the NOVA-7820 IDE controller.
• CN2: Primary IDE Connector
PIN Description PIN Description
1 RESET# 2 GROUND
3 DATA 7 4 DATA 8
5 DATA 6 6 DATA 9
7 DATA 5 8 DATA 10
9 DATA 4 10 DATA 11
11 DATA 3 12 DATA 12
13 DATA 2 14 DATA 13
15 DATA 1 16 DATA 14
17 DATA 0 18 DATA 15
19 GROUND 20 N/C
21 N/C 22 GROUND
23 IOW# 24 GROUND
25 IOR# 26 GROUND
27 CHRDY 28 GROUND
29 DACK 30 GROUND
31 INTERRUPT 32 GROUND
33 SA1 34 P66DET
35 SA0 36 N/C
37 HDC CS0# 38 HDC CS1#
39 HDD ACTIVE# 40 GROUND
3.4 Parallel Port
This port is usually connected to a printer. NOVA-7820 includes an onboard parallel port, and accessed through a 26-pin flat-cable connector
CN1. Three modes: SPP, EPP and ECP are supported.
• CN1: Parallel Port Connector
PIN Description PIN Description
1 STROBE# 14 AUTO FORM FEED #
2 DATA 0 15 ERROR#
3 DATA 1 16 INITIALIZE
4 DATA 2 17 PRINTER SELECT LN#
5 DATA 3 18 GROUND
6 DATA 4 19 GROUND
7 DATA 5 20 GROUND
8 DATA 6 21 GROUND
NOVA-7820 offers four high speed NS16C550 compatible UARTs with
Read/Receive 16 byte FIFO in each serial port.
• CN8: D_SUB 9-PIN Connector
PIN Description
1 DATA CARRIER DETECT (DCD)
2 RECEIVE DATA (RXD)
3 TRANSMIT DATA (TXD)
4 DATA TERMINAL READY (DTR)
5 GROUND
6 DATA SET READY (DSR)
7 REQUEST TO SEND (RTS)
8 CLEAR TO SEND (CTS)
9 RING INDICATOR (RI)
• CN11: 10-pin Connector
PIN Description
1 DATA CARRIER DETECT (DCD)
2 RECEIVE DATA (RXD)
3 TRANSMIT DATA (TXD)
4 DATA TERMINAL READY (DTR)
5 GROUND
6 DATA SET READY (DSR)
7 REQUEST TO SEND (RTS)
8 CLEAR TO SEND (CTS)
9 RING INDICATOR (RI)
10 N/C
15
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