TME-104P-CSR-LX800-R1V5.doc
Rev 1.5
24 (44)
LPT1 Connector
Connector type IDC26 pin header 2.54 mm
Pin
Signal
Pin
Signal
1 Strobe 2 Auto
LF
3 Data0 4 Error
5 Data1 6 Init
7 Data2 8
Select
In
9 Data3 10 GND
11 Data4 12 GND
13 Data5 14 GND
15 Data6 16 GND
17 Data7 18 GND
19 ACK 20 GND
21 Busy 22 GND
23 Paper
End 24
GND
25 Select 26
+5V
Standby
3.12
Watchdog
A watchdog timer is integrated on-board and managed with the SMC LEMT functionality. There are
different possibilities for its activation. More details can be found in chapter
151H
3.13 where a detailed
description of the SMC can be found.
A watchdog event is triggered by internal circuit of the ITE8712 Super I/O. It is possible to program
the trigger duration, see chapter 4.3 for an example.
3.13
LEMT functions
The onboard Microcontroller implements power sequencing and LEMT (
L
iPPERT
E
nhanced
M
anagement
T
echnology) functionality. The microcontroller communicates via the System
Management Bus with the CPU/Chipset. The following functions are implemented:
•
Total operating hours counter
Counts the number of hours the module has been run in minutes.
•
On-time minutes counter
Counts the seconds since last system start.
•
Power cycles counter
•
Watchdog Timer
Set / Reset / Disable Watchdog Timer.
•
System Restart Cause
Power loss / Watchdog / External Reset.
•
Flash area
1kB Flash area for customer data
•
Protected Flash area
128 Bytes for Keys, ID's, etc. can stored in a write- and clear-protectable region.
•
Board Identify
Vendor / Board / Serial number
