xa2c32a Xilinx Corp., xa2c32a Datasheet - Page 8

• Manufacturer Part Number: xa2c32a
• Description: Coolrunner-ii Automotive Cpld Product Family
• Manufacturer: Xilinx Corp.

CoolRunner-II Automotive CPLD Product Family
Design Security
Designs can be secured during programming to prevent
either accidental overwriting or pattern theft via readback.
Four independent levels of security are provided on-chip,
8
Figure 9: CoolCLOCK Created by Cascading Clock Divider and DualEDGE Option
Figure 8: Macrocell Clock Chain with DualEDGE Option Shown
CLK_CT
CDRST
GCK2
PTC
CTC
PTC
GCK0
GCK1
GCK2
GCK0
GCK1
GCK2
www.xilinx.com
Clock
In
CDRST
10
12
14
16
2
4
6
8
eliminating any electrical or visual detection of configuration
patterns. These security bits can be reset only by erasing
the entire device. See
PTC
PTC
D/T
CE
CK
D/T
CE
CK
FIF
Latch
DualEDGE
✓
DS090_09_121201
FIF
Latch
DualEDGE
WP170
Q
Q
for more detail.
DS315 (v1.1) October 31, 2006
Product Specification
R