Configuration
CP3003-SA
Page 4 - 18
ID 1052-6929, Rev. 3.0
D R A F T — F O R I N T E R N A L U S E O N L Y
4.2.17
General Purpose Input Register (GPIN)
The General Purpose Input Register holds the general purpose input signals of the rear I/O
CompactPCI connector J2. This register can be used only if the CP3003-SA is ordered as a rear
I/O version and the rear I/O GPIO operation is configured through the dedicated rear I/O module
configuration signal on the CompactPCI J2 connector.
Table 4-19: General Purpose Input Register (GPIN)
REGISTER NAME
GENERAL PURPOSE INPUT REGISTER (GPIN)
ADDRESS
0x293
BIT
NAME
DESCRIPTION
RESET
VALUE
ACCESS
7 - 5
Res.
Reserved
000
R
4
GPI4
General purpose input 4 signal (3.3V LVTTL):
0 = Input low
1 = Input high
1
R
3
GPI3
General purpose input 3 signal (3.3V LVTTL):
0 = Input low
1 = Input high
1
R
2
GPI2
General purpose input 2 signal (3.3V LVTTL):
0 = Input low
1 = Input high
1
R
1
GPI1
General purpose input 1 signal (3.3V LVTTL):
0 = Input low
1 = Input high
1
R
0
GPI0
General purpose input 0 signal (3.3V LVTTL):
0 = Input low
1 = Input high
1
R
Note ...
The CP3003-SA provides pull-up resistors on the rear I/O signal pins GPI[4:0],
which leads to the default setting “input high” if the inputs are not connected.
The general purpose inputs support 3.3 V LVTTL signaling only (not 5V
friendly).
