Справочник Пользователя для ERG Transit Systems MCROEM
Device Product Group
Security Level 3
MCROEM User Manual
DPG-00604
ERG Confidential © ERG 2005
Page 12 of 20
Revision 1.0 / 11 October 2005
4.2.2
LCD Interface Connection
Pin Designation Signal Level
Function
1
Not
used
2
Not
used
3
Not
used
4
Not
used
5
Not
used
6
Backlight
Ground
Switch for backlight ground
7
+5V
+5V
Power supply positive for backlight
8
Not
used
9
B_/Reset
5V TTL
LCD Reset
10 B_CSLCD2
5V TTL
LCD chip select upper half
11 B_CSLCD1
5V TTL
LCD chip select lower half
12 B_D7
5V TTL
LCD data bus
13 B_D6
5V TTL
LCD data bus
14 B_D5
5V TTL
LCD data bus
15 B_D4
5V TTL
LCD data bus
16 B_D3
5V TTL
LCD data bus
17 B_D2
5V TTL
LCD data bus
18 B_D1
5V TTL
LCD data bus
19 B_D0
5V TTL
LCD data bus
20 B_LCD_CLK 5V TTL
LCD data clock
21 /B_LCDRW 5V TTL
LCD read write signal
22 B_A0
5V TTL
LCD address bus
23 CTRST
-20V
Negative supply for LCD contrast
24 LCD_Volt
+5V
Power supply positive for LCD
25 GND
Ground
Power supply negative for LCD
26
Not
used
27
Not
used
28
Not
used
29
Not
used
30
Not
used
Table 3: LCD Interface Connections
4.3
Supported I/O Interfaces
The I/O interface between the device and MCR is 3.3V TTL signalling. I/O interfacing is via a
15-pin connector located on the Control Board.
15-pin connector located on the Control Board.
4.3.1
I/O Interface Connector
The MCR interface connector mates with a straight connector.
Straight connector:
Molex #51021-1500 or equivalent