DIGITAL-LOGIC AG
SM800/900DK Technical Manual V1.2B
58
12.4. Signal Definitions
12.4.1. Supply Inputs to the Module
Power Inputs to the SM800/900
Signals
Value/Function
Comment Remark 1
Remark 2
VCC5SB
5.0V input
0.2A
Connect a 100nF to each pin
VCC
5.0V input
1.5A
Peak current 2Amp
Connect a 100nF to each pin
RTC_BAT (B46)
3.0V-3.6V input
Typ. 10uA Lithium battery
Use 1k resistor in series
12.4.2. Supply Outputs from the Module
Power Outputs of the SM800/900
Signals
Value/Function
Comment Remark 1
Remark 2
VCC3 (A91,B91)
3.3V output
Max.1Amp For external peripherals
VCORE (B120)
control output
Don’t use this pin
Only for factory testing
12.4.3. Clock Outputs of the Module
Clocks of the SM800/900
Signals
Value/Function
Used for
If used
If not used
SYSCLK (A8)
8MHz TTL
ISA-BUS
OSC (B34)
14.31MHz TTL
ISA-BUS
CLK_LPC_FWH (A51)
33MHz 3.3V
LPC-Bus
For external FWH
Don’t connect
24MHz (B80)
24MHz
SuperIO
For external SuperIO
Don’t connect
PCI-CLK 0,1
33MHz
PCI-Bus
Connect to PCI-device
Only for 1-2 chips
Don’t connect
If the PCI_CLKx must be split into two PCI-devices, separate it with 2x 10 Ohm directly at the smartmodule
pin. This is possible if the length of each PCI_Clockline is short (less than 10cm). Alternatively, use a PCI-
Clock multiplier chip.
12.4.4. Reset Outputs of the Module
The Reset Controller in the module generates different reset signals.
Reset Outputs of the SM800/900
Signals
Value/Function
Used for
If used
If not used
PCI-Reset# (B78)
PCI-Bus 3.3V
PCI
Go to each PCI device Don’t connect
IDE-Reset# (B32)
IDE-Bus TTL
IDE
Go to the hard disk
Don’t connect
RESDRV (A2)
ISA-BUS TTL
ISA
Go to ISA-devices
Don’t connect
LPC_RST# (A53)
LPC 3.3V
LPC
Go to all LCD devices
Don’t connect
Summary of Contents for SM800/900DK
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