ep2a40b724i8 Altera Corporation, ep2a40b724i8 Datasheet - Page 65

• Manufacturer Part Number: ep2a40b724i8
• Description: Programmable Logic Device Family
• Manufacturer: Altera Corporation

Altera Corporation
Figure 36. APEX II JTAG Waveforms
Table 19
devices.
Captured
t
t
t
t
t
t
t
t
t
t
t
t
t
Symbol
JCP
JCH
JCL
JPSU
JPH
JPCO
JPZX
JPXZ
JSSU
JSH
JSCO
JSZX
JSXZ
Table 19. APEX II JTAG Timing Parameters & Values
Driven
Signal
Signal
to Be
to Be
TMS
TDO
TCK
TDI
shows the JTAG timing parameters and values for APEX II
TCK clock period
TCK clock high time
TCK clock low time
JTAG port setup time
JTAG port hold time
JTAG port clock to output
JTAG port high impedance to valid output
JTAG port valid output to high impedance
Capture register setup time
Capture register hold time
Update register clock to output
Update register high impedance to valid output
Update register valid output to high impedance
t
JCH
t
t
JPZX
JSZX
t
JCP
APEX II Programmable Logic Device Family Data Sheet
t
JSSU
t
JCL
Parameter
t
JSH
t
t
JPCO
JSCO
t
JPSU
t
t
JSXZ
JPH
100
Min
50
50
20
45
20
45
t
JPXZ
Max
25
25
25
35
35
35
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
65