Chapter 3
Table 3-4. Utility 1 Interface Pin Signals (J5) (Continued)
45
USBN1-
46
PP_PE
47
USBP1+
48
GND10
49
GND11
50
PP_SLCT
51
USB_OC2*
52
FIRMode
53
USBPwr2
54
NC
55
USBN2-
56
GND12
57
USBP2+
58
IRTX
59
GND 13
60
IRRX
61
MDATA
62
SPKR
63
MSCK
64
GND14
65
GND15
66
ResetSW
67
MSPwr
68
KBSW
69
HDACT
70
KBDT
71
ExtSMI
72
KBCK
73
NC
74
GND16
75
NC
76
KBPwr
77
-12V
78
BATV+
79
-5V
80
BATV-
Note: The shaded areas denote power or ground. The signals marked with * indicate active low.
22
USB Port 1 Negative Polarity
Parallel Paper End – This is a status output signal from the printer. A high state
indicates it is out of paper.
USB Port 1 Positive Polarity
Ground 10 (USB)
Ground 11 (USB)
Parallel Select – This is a status output signal from the printer. A high state
indicates it is selected and powered on.
USB 2 Power Protection – Port is disabled if this input is low. Direct inputs are
provided for over current protection.
IR Function Mode Select – Tied to ground through 10k ohm resistor.
+5 volts +/-5% (USB2 Power)
Not Connected
USB Port 2 Negative Polarity
Ground 12 (USB)
USB Port 2 Positive Polarity
Not Connected
Ground 13 (USB)
Not Connected
Mouse Data
Speaker – Signal for external PC "Beep" speaker.
Mouse Clock
Ground 14 (Mouse)
Ground 15 (Mouse)
Reset Switch – Accepts external reset signal (momentarily grounding this pin.)
+5 volts +/-5% (Mouse Power)
Not Connected
IDE Hard Drive Active – Signal for external HDD activity LED.
Keyboard Data
Not Connected
Keyboard Clock
Not Connected
Ground 16 (Keyboard)
Not Connected
Keyboard Power
Not Connected
External Backup Battery Positive – External positive battery terminal.
Not Connected
External Backup Battery Negative – External battery ground.
Reference Manual
Hardware
CoreModule 740
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