1–18

Chapter 1: Cyclone III Device Data Sheet

Switching Characteristics

Cyclone III Device Handbook, Volume 2

© January 2010

Altera Corporation

Table 1–25 lists the JTAG timing parameters and values for Cyclone III devices.

Periphery Performance

High-Speed I/O Specifications

Table 1–26 through Table 1–31 list the high-speed I/O timing for Cyclone III devices.

For definitions of high-speed timing specifications, refer to “Glossary” on page 1–27.

Table 1–25. Cyclone III Devices JTAG Timing Parameters

(Note 1)

Symbol

Parameter

Min

Max

Unit

t

JC P

TCK clock period

40

—

ns

t

JC H

TCK clock high time

20

—

ns

t

JC L

TCK clock low time

20

—

ns

t

JP SU_TDI

JTAG port setup time for TDI (2)

1—

ns

t

JP SU_TM S

JTAG port setup time for TMS (2)

3—

ns

t

JP H

JTAG port hold time

10

—

ns

t

JP CO

JTAG port clock to output (2)

—15

ns

t

JP ZX

JTAG port high impedance to valid output (2)

—15

ns

t

JP XZ

JTAG port valid output to high impedance (2)

—15

ns

t

JS SU

Capture register setup time (2)

5—

ns

t

JS H

Capture register hold time

10

—

ns

t

JS CO

Update register clock to output

—

25

ns

t

JS ZX

Update register high impedance to valid output

—

25

ns

t

JS XZ

Update register valid output to high impedance

—

25

ns

Notes to Table 1–25:

(1) For more information about JTAG waveforms, refer to “JTAG Waveform” in “Glossary” on page 1–27.

(2) The specification is shown for 3.3-, 3.0-, and 2.5-V LVTTL/LVCMOS operation of JTAG pins. For 1.8-V LVTTL/LVCMOS

and 1.5-V LVCMOS, the JTAG port clock to output time is 16 ns.

Table 1–26. Cyclone III Devices RSDS Transmitter Timing Specifications

(Note 1), (2) (Part 1 of 2)

Symbol

Modes

C6

C7, I7

C8, A7

Unit

Min

Typ

Max

Min

Typ

Max

Min

Typ

Max

f

HSC LK

(input clock

frequency)

×10

10

—

180

10

—

155.5

10

—

155.5

MHz

×8

10

—

180

10

—

155.5

10

—

155.5

MHz

×7

10

—

180

10

—

155.5

10

—

155.5

MHz

×4

10

—

180

10

—

155.5

10

—

155.5

MHz

×2

10

—

180

10

—

155.5

10

—

155.5

MHz

×1

10

—

360

10

—

311

10

—

311

MHz