XC9572 In-System Programmable CPLD
3
JTAG
In-System Programming Controller
1
JTAG Port
Controller
36
Function
18
18
18
18
Block 1
I/O
Macrocells
1 to 18
I/O
I/O
I/O
36
36
36
Function
Block 2
Macrocells
1 to 18
I/O
Blocks
I/O
I/O
Function
Block 3
Macrocells
1 to 18
I/O
I/O
3
I/O/GCK
I/O/GSR
I/O/GTS
Function
Block 4
1
2
Macrocells
1 to 18
X5921
Figure 2: XC9572 Architecture
Note: Function Block outputs (indicated by the bold line) drive the I/O Blocks directly
2
December 4, 1998 (Version 3.0)