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DIGITAL-LOGIC AG
SM800/900DK Technical Manual V1.2B
62
12.4.16. GPIOxx Interface of the Module
The GPIO interfaces are freely programmable, general purpose IOs (see Section 13.7.10). They are
internally connected directly to the SuperIO W83627HF from Winbond.
GPIO Interface of the SM800/900
Signals
Value/Function
Used for If used
If not used
GPIO30,31,34
I/OD12ttl
GPIO
Free to connect
Don’t connect
I/OD12ttl - TTL level bi-directional pin open drain output with 12mA sink capability.
If the GPIO3x is used as output, an external (outside of the SM800PCX) pullup resistor (to 5V or 3.3V) is
needed.
12.4.17. COM1/2 Interface of the Module
The COMx interfaces are provided by the SuperIO on-module.
COMx Interface of the SM800/900
Signals
Value/Function
Used for If used
If not used
COM1, COM2
TTL 5V I/O
8mA outputs
Serial
Must be connected to
an MAX211 RS232
converter
Pullup all inputs to the UART.
Ex. RxD, DSR, CTS, RI, DCD
each with 1k to 3.3V
12.4.18. LPT Interface of the Module
The LPT interface is provided by the SuperIO on-module.
LPT Interface of the SM800/900
Signals
Value/Function
Used for If used
If not used
LPT
TTL 5V I/O
12mA outputs
Connect all signals to the
25pin-Dsub connector.
Don’t connect
12.4.19. PS2 Interface of the Module
The PS2 interface is provided by the SuperIO on-module.
PS2-Interface of the SM800/900
Signals
Value/Function
Used for
If used
If not used
PS2
TTL 5V input
open drain output (16mA drive)
CLK and DAT with 1k pullup to
VCC in the SM800PCX
Connect to 2 PS2-
connectors.
Don’t connect
Summary of Contents for SM800/900DK
Page 14: ...DIGITAL LOGIC AG SM800 900DK Technical Manual V1 2B 14 2 3 Block Diagrams 2 3 1 MSEBX800 900 ...
Page 23: ...DIGITAL LOGIC AG SM800 900DK Technical Manual V1 2B 23 4 1 Connector Plan ...
Page 36: ...DIGITAL LOGIC AG SM800 900DK Technical Manual V1 2B 36 5 3 Jumpers on the MSEBX800 ...
Page 48: ...DIGITAL LOGIC AG SM800 900DK Technical Manual V1 2B 48 12 1 2 PCB to SM800 900PC X Height ...
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