Ps/2 Keyboard And Mouse; Signal Description - Advantech SOM-ETX Series Design Manual

SOM-ETX
STB# C55
PD0_INDEX# C80
PD1_TRK0# C78
PD2_WP# C76
PD3_RDATA# C74
PD4_DSKCHG# C72
PD5 C68
PD6_MOT0 C62
PD7_DSA# C58
AFD#_DENSEL C56
ERR#_HDSEL# C60
INIT#_DIR# C64
SLIN#_STEP# C70
ACK#_DSB# C84
BUSY#_MOT1 C86
PE_WDATA# C88
SLCT_WGATE# C90
Figure 5-34 Practical LPT Port Design Using PAC1284

5.11 PS/2 Keyboard and Mouse

SOM-ETX provides both PS/2 keyboard and mouse functions.
5.11.1

Signal Description

Table 5.22 KB/MS signal descriptions
Pin
C96
C98
C92
C94
100
Advantech SOM-ETX Design Guide
Isolation
Signal
KBCLK
KBDAT
MSCLK
MSDAT
Chapter 5 Carrier Board Design Guidelines
Parallel Port
PAC1284
I/O
O
I/O
O
I/O
D-Sub 25
Strobe#
Data 0
Data 1
Data 2
Data 3
Data 4
Data 5
Data 6
Data 7
AutoFeed#
Error#
Initial
Select Input
Acknowledge
Busy
Out of Paper
Select
Description
Keyboard clock
signal
Bi-direction keyboard
data signal
Mouse clock signal
Bi-direction mouse
data signal