Datasheet

4D SYSTEMS µVGA-III
© 2012 4D SYSTEMS Page 6 of 19 www.4dsystems.com.au
microVGA – VGA GRAPHICS ENGINE
I = Input, O = Output, P = Power
J3 and J4 Pin Outs (VGA Headers)
Pin
Symbol
I/O
Description
1
GND
P
Ground
2
GND
P
Ground
3
VS
O
Vertical Sync
4
BLUE
O
Blue (RGB)
5
HS
O
Horizontal Sync
6
GND
P
Ground
7
GREEN
O
Green (RGB)
8
GND
P
Ground
9
RED
O
Red (RGB)
10
GND
P
Ground (STRIPED WIRE ON THE VGA CABLE, FOR J3 ONLY – See Section 4.4)
I = Input, O = Output, P = Power
H1 Pin Outs (I/O Expansion Header)
Pin
Symbol
I/O
Description
1
IO1
I/O
General Purpose Input Output 1 Pin
2
N/C
-
Not connected
3
IO2
I/O
General Purpose Input Output 2 Pin
4
N/C
-
Not connected
5
IO3
I/O
General Purpose Input Output 3 Pin
6
SCL
O
I
2
C Clock Output
7
IO4
I/O
General Purpose Input Output 4 Pin
8
SDA
I/O
I
2
C Bidirectional Data
9
IO5
I/O
General Purpose Input Output 5 Pin
10
N/C
-
Not connected
11
GND
P
Supply Ground
12
N/C
-
Not connected
13
GND
P
Supply Ground
14
+5V
P
Supply Input +ve, 4.0V to 5.5V, 5.0V Nominal
15
BUS7
I/O
IO Bus (BUS0..7) bit 7
16
AUDIO
O
Audio Output, TTL Line level for connecting to an external amplifier
17
BUS6
I/O
IO Bus (BUS0..7) bit 6
18
AUDENB
O
Audio Enable Output, to enable an external Amplifier (if required)
19
BUS5
I/O
IO Bus (BUS0..7) bit 5
20
RES
I
Master Reset, Active Low (GND) (Refer H2 Pinout)
21
BUS4
I/O
IO Bus (BUS0..7) bit 4
22
3.3V OUT
P
3.3V Output, 20mA Max supply
23
BUS3
I/O
IO Bus (BUS0..7) bit 3
24
RX0
I
Asynchronous serial port 0 receive pin. COM0 (same as the RX pin on the H2
Programming Header)
25
BUS2
I/O
IO Bus (BUS0..7) bit 2
26
TX0
O
Asynchronous serial port 0 transmit pin. COM0 (same as the TX pin on the H2
Programming Header)
27
BUS1
I/O
IO Bus (BUS0..7) bit 1
28
TX1
O
Asynchronous serial port 1 transmit pin. COM1
29
BUS0
I/O
IO Bus (BUS0..7) bit 0
30
RX1
I
Asynchronous serial port 1 receive pin. COM1