HOLT ADK-8400 Quick Start Manual page 15

Daisy Chain Board Connections
SPI Connector (J28)
Pin
Number
1
2
3
4
5
6
7
Parallel Data out connector (J22)
Pin
Number
1
2
3
4
5
6
7
8
Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com. Arrow.com.
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Label
VLOGIC
nCS
SCK
SO
SI
INTB
GND
Label
GND
INTB
NC
nOE
SO1
SO2
SO3
SO4
Holt Integrated Circuits
15
Description
3.3V/ 5V Logic supply
SPI Chip Select
SPI Serial Clock Input of U4
SPI Serial Output from U4
SPI Serial Input of U4
Interrupt output from U4
Low voltage Ground
Description
Low voltage Ground
Interrupt output from U4
Not Connected
Output Enable (active low)
Sense Output 1
Sense Output 2
Sense Output 3
Sense Output 4