BM-141GE / BB-141GE
13
6. GPIO (Inputs and outputs)
6.1. Overview
All input and output signals pass through the GPIO (General Purpose Input and Output) module.
The GPIO module consists of a Look-Up Table (LUT – Cross-Point Switch), 2 Pulse Generators
and a 12-bit counter. In the LUT, the relationship between inputs, counters and outputs is
governed by internal register set-up.
Fig.7 GPIO
In the BM-141GE and BB-141GE, the relation for the external interface is fixed as below.
Line
Signal
Connector
Line 1
TTL Out 1
D Sub 9P pin #4
Line 2
TTL Out 2
D Sub 9P pin #8
Line 3
Optical Out 1
Hirose 12P pin # 7/8
Line 4
Optical Out 2
Hirose 12P pin # 9/10
Line 5
Optical In 1
Hirose 12P pin # 5/6
Line 6
Optical In 2
Hirose 12P pin # 3/4
Line 7
TTL In
D Sub 9P pin #3
Line 8
LVDS In
D Sub 9P pin #1/2
LUT
( Cross Point Switch )
Pulse Generator 1
(19 bit Counter )
Pulse Generator 0
(19 bit Counter )
12 bit
Counter
TRIGGER 0
TRIGGER 1
TTL OUT 1
TTL OUT 2
OPT OUT 1
OPT OUT 2
Time Stamp Reset
Sequence Reset
LVAL IN
DVAL IN
FVAL IN
EEN IN
OPT IN 1
OPT IN 2
TTL IN 1
LVDS IN 1
Soft Trigger 0
Soft Trigger 1
Soft Trigger 2
Soft Trigger 3
IN
OUT
Pulse Generator 0
Pulse Generator 1
Pulse Generator 0
Pulse Generator 1
Digital I/O(GPIO) setting
0
1
2
3
4
5
6
7
12
13
14
15
16
17
Digital I/O(GPIO) setting
0
1
4
5
6
7
16
17
12
13
Setting for
Line Source
Setting for
Line Selector
Pixel Clock
Counter Clock Source
1
Counter Divide by value
1/2 to 1/4096
Bypass
0
1 - 4095
Pulse Generator Setting 0
Start Point Counter 0 ( 1)
Length counter 0
Start Point Counter 0 (2) for repeat
End point counter 0
Counter 0 clear
Pulse Generator Setting 1
