XCS05XL Xilinx, XCS05XL Datasheet - Page 40

• Manufacturer Part Number: XCS05XL
• Description: Spartan and Spartan-XL Families Field Programmable Gate Arrays
• Manufacturer: Xilinx

Spartan and Spartan-XL Families Field Programmable Gate Arrays
Readback Switching Charateristics Guidelines
The following guidelines reflect worst-case values over the
recommended operating conditions.
40
Spartan and Spartan-XL Readback Switching Characteristics
Notes:
1.
2.
Symbol
Internal Net
T
T
rdbk.DATA
T
T
rdbk.TRIG
T
T
Timing parameters apply to all speed grades.
If rdbk.TRIG is High prior to Finished, Finished will trigger the first Readback.
RCRD
RCRR
RTRC
RCRT
RCH
rdbk.RIP
RCL
Finished
rdclk.I
rdbk.TRIG
rdclk.I
T
T
RCL
RTRC
Figure 33: Spartan and Spartan-XL Readback Timing Diagram
rdbk.TRIG setup to initiate and abort Readback
rdbk.DATA delay
rdbk.TRIG hold to initiate and abort Readback
rdbk.RIP delay
High time
Low time
DUMMY
T
T
RCRD
RCRR
T
RCH
T
RCRT
DUMMY
Description
T
www.xilinx.com
RTRC
1-800-255-7778
VALID
VALID
T
RCRT
DS060 (v1.6) September 19, 2001
Min
200
250
250
50
-
-
Product Specification
Max
250
250
500
500
-
-
DS060_32_080400
Units
ns
ns
ns
ns
ns
ns
R