mITX-BW – User Guide, Rev. 1.6
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Connector Definitions
The following sections provide pin definitions and detailed description of all on-board connectors.
The connector definitions follow the following notation:
Table 10: Connector definitions
Column Name
Description
Pin
Shows the pin-numbers in the connector. The graphical layout of the connector
definition tables is made similar to the physical connectors.
Signal
The mnemonic name of the signal at the current pin.
The notation “XX#” states that the signal “XX” is active low.
Type
AI:
Analogue Input.
AO:
Analogue Output.
I:
Input, TTL compatible if nothing else stated.
IO:
Input / Output. TTL compatible if nothing else stated.
IOT:
Bi-directional tristate IO pin.
IS:
Schmitt-trigger input, TTL compatible.
IOC:
Input / open-collector Output, TTL compatible.
IOD:
Input / Output, CMOS level Schmitt-triggered. (Open drain output)
NC:
Pin not connected.
O:
Output, TTL compatible.
OC:
Output, open-collector or open-drain, TTL compatible.
OT:
Output with tri-state capability, TTL compatible.
LVDS:
Low Voltage Differential Signal.
PWR:
Power supply or ground reference pins.
Ioh:
Typical current in mA flowing out of an output pin through a grounded load,
while the output voltage is > 2.4 V DC (if nothing else stated).
Iol:
Typical current in mA flowing into an output pin from a VCC connected load,
while the output voltage is < 0.4 V DC (if nothing else stated).
Pull U/D
On-board pull-up or pull-down resistors on input pins or open-collector output pins.
Note
Special remarks concerning the signal.
Designation
Type and number of item described
see Section
Number of section in this User Guide containing detailed description
The abbreviation TBD is used for specifications which are not available yet or which are not sufficiently specified by
the component vendors.
