Instruction Manual

Chapter 3 Hardware
ETX-PVR Reference Manual 33
29 LCDDO4 Data Negative Output, Line 2, Channel 1
30 LCDDO7 Clock Positive Output, Clock, Channel 1
31 LCDDO5 Data Positive Output, Line 2, Channel 1
32 LCDDO6 Clock Negative Output, Clock, Channel 1
33, 34
GND Ground
35 LCDDO1 Data Positive Output, Line 0, Channel 1
36 LCDDO3 Data Positive Output, Line 1, Channel 1
37 LCDDO0 Data Negative Output, Line 0, Channel 1
38 LCDDO2 Data Negative Output, Line 1, Channel 1
39, 40
VCC DC Power – +5V +/- 5%
41 JILI_DAT
Flat Panel I
2
C Data – This is the I
2
C data interface to the parameter
EEPROM used with the flat panel.
42 LTGIO0 General Purpose I/O
43 JILI_CLK
Flat Panel I
2
C Clock – This is the I
2
C clock interface to the parameter
EEPROM used with the flat panel.
44 BLON* Backlight On – This signal controls the external backlight power for the flat
panel.
45 BIASON
(DNP)
BIAS ON – This signal controls the flat panel contrast voltage.
46 DIGON Digital Power On – This signal controls the digital flat panel power up.
47 NC Not Connected
48 NC Not Connected
49 NC Not Connected
50 NC Not Connected
51 LPT/FLPY* Parallel/Floppy Select – This signal selects the parallel or floppy port
signals. If this signal is Low at boot time, the floppy drive is selected. If this
signal is High at boot time, the parallel port is selected. This state can not be
changed until the next boot cycle.
52 NC Not Connected (Reserved)
53
VCC DC Power – +5 volts +/- 5%
54 GND Ground
55 Strobe*
DS0*
Parallel Strobe – This output signal is used to strobe data into the printer. I/O
pin in ECP/EPP mode.
Floppy Drive Select 0 – Selects drive 0.
56 AFD*
DENSEL
Parallel Auto Feed – This is a output signal from the printer to
automatically feed one line after each line is printed.
Floppy Drive Density Select – This signal indicates if a low (250/300 kbps)
or high (500/1 kbps) data rate is selected.
57 NC Not Connected (Reserved)
58 PD7 Parallel Port Data 7 – This signal (0 to 7) provides a parallel port data signal
and is the printer data MSB.
59 NS Not Supported
Table 3-6. Complete X3 Interface Pin Signal Descriptions (J3) (Continued)