Cirrus-logic EP7311 Manual do Utilizador descarregar pdf (Página 29)

DS506F2 Copyright Cirrus Logic, Inc. 2011

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EP7311

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

1 2 ... 24 25 26 27 28 29 30 31 32 33 34 ... 41 42

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