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J5 Signal Descriptions
General
VCC
GND
NC
RESERVED
Miscellaneous Signals
SPKR*OC
DIAG*OC
PBRESET*
RESET*
Keyboard/Auxiliary Device, TTL levels
AUXCLK
AUXDAT
KBDCLK
KBDDAT
Universal Serial Bus (USB) (0 & 1), USB levels
UDATAn+
UDATAn-
5v power supply
digital signal ground plane
no connect
do not connect to
PC/AT speaker output, open collector (may have pull-up on
host card)
diagnostic/alarm output, open collector (may have pull-up on
host card)
push button system reset input (pulled up, filtered, and
debounced on host card)
system reset output, TTL totem-pole [on CPV5000, asserted
only when 5V power is out of tolerance and upon manual reset
(push-button) assertion]
clock for PS/2 auxiliary device (mouse)
serial data line for PS/2 auxiliary device (mouse)
clock for PC/AT or PS/2 keyboard
serial data line for PC/AT or PS/2 keyboard
(+) signal of differential data pair for USB channel
(-) signal of differential data pair for USB channel
Connectors J4 and J5
3-13
3
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