Armadillo-9
hardware manual ver.1.02
5.5. CON4 (Parallel Interface)
CON4 is a general purpose I/O port. It is connected to the GPIO (General Purpose I/O) on the CPU
(EP9315). The port can be controlled using PADR (Port A data register I/O at 0x8084 0000), PADDR (Port
A data direction register I/O at 0x8084 0010), PBDR (Port B data register I/O at 0x8084 0004) and PBDDR
(Port B data direction register I/O at 0x8084 0014) in the CPU.
Table 5-5 CON4 Signal Assignment
No.
Signal Name
I/O
Function
1
GND
Power
Power supply (GND)
2
+3.3V
Power
Power supply (+3.3V)
3
GPIO_0
I/O
GPIO port 0 (Connects to EGPIO4 (Port A: 4) pin of EP9315)
4
GPIO_1
I/O
GPIO port 1 (Connects to EGPIO5 (Port A: 5) pin of EP9315)
5
GPIO_2
I/O
GPIO port 2 (Connects to EGPIO6 (Port A: 6) pin of EP9315)
6
GPIO_3
I/O
GPIO port 3 (Connects to EGPIO7 (Port A: 7) pin of EP9315)
7
GPIO_4
I/O
GPIO port 4 (Connects to EGPIO8 (Port B: 0) pin of EP9315)
8
GPIO_5
I/O
GPIO port 5 (Connects to EGPIO9 (Port B: 1) pin of EP9315)
9
GPIO_6
I/O
GPIO port 6 (Connects to EGPIO10 (Port B: 2) pin of EP9315)
10
GPIO_7
I/O
GPIO port 7 (Connects to EGPIO11 (Port B: 4) pin of EP9315)
Electrical specifications of the parallel interface are shown in Table 5-6.
Table 5-6 Electrical Specifications of CON4 Parallel Interface
Symbol
Parameter
Min
Max
Unit
Conditions
V
IH
CMOS Input high voltage
0.65×V
DDIO
V
DDIO
+0.3 V V
DDIO
=3.3V
V
IL
CMOS Input low voltage
-0.3
0.35×V
DDIO
V
V
OH
CMOS Output high voltage
2.8
V
I
OH
=4mA
V
OL
CMOS Output low voltage
0.5
V
I
OL
=-4mA
I
OH
CMOS Output high voltage
4
mA
I
OL
CMOS Output low voltage
-4
mA
I
IL
Input leakage current
10.0
µA
V
IN
=V
DD
or GND
5.6. CON5 (Parallel Interface)
CON5 is a general purpose I/O port. It is connected to the GPIO (General Purpose I/O) of the CPU
(EP9315). The port can be controlled using PDDR (Port D data register I/O at 0x8084 000C) and PDDDR
(Port D data direction register I/O at 0x8084 001C) in the CPU. The electrical specifications of the CON5
parallel interface are as shown in Table 5-6.
Table 5-7 CON5 Signal Assignment
No.
Signal Name
I/O
Function
1
GPIO_ Ext0
I/O
GPIO port 0 (Connects to Port D: 4 pin of EP9315)
2
GPIO_ Ext1
I/O
GPIO port 1 (Connects to Port D: 5 pin of EP9315)
3
GPIO_ Ext2
I/O
GPIO port 2 (Connects to Port D: 6 pin of EP9315)
4
GPIO_ Ext3
I/O
GPIO port 3 (Connects to Port D: 7 pin of EP9315)
10