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