7188XA/B/C & 7521/2/2A/3/4/7 Series Hardware User’ s Manual, Ver. 3.0 Sep/2002, 7Mh-001-20 -----
59
The X100 is an 8-channel D/I board designed for the 7188X(D)/7521(D).
It removes all 5 resistors, R19 ~ R23, and reconfigures all these pins as D/I
pins. It installs another 5-pin female reconfiguration-jumper into TP1 of the
7188XC(D)/7521(D).
Therefore, user can select the original 3_DO_2_DI
functions or new 5_DI functions by setting the jumper in different
positions.
Refer to “I/O Expansion Bus in the 7188X/7188E User’ s Manual”
for more information.
The 7188XB(D) has 14 user-defined pins. But the 7188X(B) & 7188X(A)
don’t support the reconfiguration-resistor. So the user-defined pins of the
7188X/7521 family are given as follows:
User defined pins Reconfiguration pins
Customized I/O pins
7188XA(D)
0
0
0+0=0
7188XB(D)
14
0
14+0=14
7188XC(D)
3
5
3+5=8
7521(D)
3
5
3+5=8
7522/23(D)
0
0
0+0=0
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