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Motherboard
2.7
Blockschaltbild der Grundbaugruppe
LT1083CP
DC/DC
LT1083CP
DC/DC
5V–> 3.3/2.5V
5V–> 3.3V
CPU–core VCC
CPU–io VCC
N8
1A
1A
Host 64Bit Datenbus 32 Bit Adressbus 3.3V
Î Î Î Î Î
HA 3..31,HD 0..63
HA 3..31 Steuerleitungen
Î Î Î Î Î
1.2A
'ABT245
TSC
3.3V/5V
Cache
82437FX
3.3V/5V
Memorycontroller
160pol Con.
D14..16
D7
X23
208PQFP
PLINK 0..15
5V
DD 0..15
Systemcontroller
PIIX
82371FB
D6
'ABT245
208PQFP
SA 8..19
'ABT245
PCMCIA–CTRL
VG–469
D8
SKAN
SIMATIC S5/S7
10.5MHz,
VCC/
D10
21MHz
VPP
VCC/
VPP
SIMATIC
S5–Module
PCMCIA
Mem.–Card
Slot–II
optional
Bild 2-4
Grundplatine
2-12
Pentium
max.5A(core)
Socket 7
N7
split 3.3V
max.0.5A(IO)
X12
321 SPGA Ziff
dRAM 8,16,32,64,128MB
HD0.7,16..23,32..39,48..55
72pol.SIMM
MD0..31
MD0..7,16..23,32..3
RAS 1/2
9,48..55
72pol.SIMM
X19
RAS 3/4
72pol.SIMM
X21
MD32..63
RAS 1/2
MA0..11
72pol.SIMM
X20
RAS 3/4
X22
5V
3.3/5 V PCI –BUS AD0..32
Connector
Primary
Fast IDE
for Riser–Board
Festplatte
Festplatte/
CD–ROM
Secondary Fast
IDE
ISA–BUS 16Bit Daten 24Bit Adresse 5V
SA0..16
'ABT245
3.6V
SPC2
32kHz
'ABT245
D9
XD 0..7
Potential
getrennt
FlashBios
128/256 kByte
RS485
D13
MPI
BIOS
3.5"Floppy
Taktgenerator 3.3V
50,60,66MHz
14.3181MHz
ICD2254
D2
Clocksel
FrameBuffer
256x16
5V
dRAM
D11
HD8..15,24..31,40..47,56..63
514171
TDP
3.3V/5V
VMA 0..9
82438FX
D5
VGA–LCD
TDP
MD8..15,24..31,40..47,56..63
3.3V/5V
82438FX
CL–GD7543
D4
PLINK 0..7
PLINK 8..15
25,30,33MHz
188pol.
Riser–Board
UltraIO
75150/154
TTL
PC87306
TTY
D3
160QFP
COM1
MUX
'4066
Kommunikation
Tastatur/Trackball
PS/2 Maus
TTY/AG
SIMATIC PC RI25/45, Technische Beschreibung
C79000-G7000-C808-01
Legende:
5V....3.3V
256x16
5V
dRAM
D12
800x600 LCD
514171
TFT/STN
3.3V
RC–Netzwerk
D1
ext.VGA
1024x768x256
PCI–Slot
3.3V/5V
ISA–Slot
5V
ISA–Slot
5V
75150/154
RC–Netz
protection
COM2
LPT1
EPP/ECP
Drucker
Modem
Centronics
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