CJB WEX-QM871, User Manual, Page: 15 / 90

15
1.7 Connector Definitions
The following sections provide pin definitions and detailed description of all on-board
connectors. The connector definitions follow the following notation:
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.
Type Al Analog Input.
AO
Analog Output.
I Input, TTL compatible if nothing else stated.
IO Input / Output TTL compatible if nothing else stated.
IOT Bi-directional tri-state 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.
DIFF
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).
Signal
The mnemonic na
me of the signal at the current pin. The notation “XX#”
states that the signal “XX” is active low.
Note Special remarks concerning the signal.
※
The abbreviation TBD is used for specifications which are not available yet or which are
not sufficiently specified by the component vendors.