Processor Users Manual

12-4 MPC8260 PowerQUICC II UserÕs Manual MOTOROLA
Part III. The Hardware Interface
Figure 12-3. Output Pin Cell (O.Pin)
Figure 12-4. Observe-Only Input Pin Cell (I.Obs)
1
1
MUX
1
1
MUX
G1
C
D
C
D
From Last Cell
Clock DR
Update DR
Shift DR
1 Ñ EXTEST | Clamp
Data from
To Output
Buffer
0 Ñ Otherwise
Logic
System
To Next Cell
G1
1
1
MUX
G1
C
D
From Last Cell
Clock DR
Data to
System
Logic
Input
Pin
Shift DR
To Next Cell