Cirrus-logic EP7312 Manual de usuario Pagina 29

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DS508F2 Copyright Cirrus Logic, Inc. 2011
(All Rights Reserved) 29
EP7312
High-Performance, Low-Power System on Chip
JTAG Interface
Parameter Symbol Min Max Units
TCK clock period
t
clk_per
2-ns
TCK clock high time
t
clk_high
1-ns
TCK clock low time
t
clk_low
1-ns
JTAG port setup time
t
JPs
-0ns
JTAG port hold time
t
JPh
-3ns
JTAG port clock to output
t
JPco
-10ns
JTAG port high impedance to valid output
t
JPzx
-12ns
JTAG port valid output to high impedance
t
JPxz
-19ns
TDO
TCK
TDI
TMS
t
JPh
t
clk_high
t
clk_low
t
JPzx
t
JPco
t
JPxz
t
clk_per
t
JPs
Figure 14. JTAG Timing Measurement
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