ACEX1 datasheet(59/86 Pages) ETC

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Altera Corporation

ACEX 1K Programmable Logic Device Family Data Sheet

Tables 27 through 29 describe the ACEX 1K external timing parameters

and their symbols.

Notes to tables:

(1)

External reference timing parameters are factory-tested, worst-case values specified by Altera. A representative

subset of signal paths is tested to approximate typical device applications.

(2)

Contact Altera Applications for test circuit specifications and test conditions.

(3)

These timing parameters are sample-tested only.

(4)

This parameter is measured with the measurement and test conditions, including load, specified in the PCI Local

Bus Specification, Revision 2.2.

Table 27. External Reference Timing Parameters

Note (1)

Symbol

Parameter

Conditions

tDRR

interconnects

(2)

Table 28. External Timing Parameters

Symbol

Parameter

Conditions

tINSU

Setup time with global clock at IOE register

(3)

tINH

Hold time with global clock at IOE register

(3)

tOUTCO

Clock-to-output delay with global clock at IOE register

(3)

tPCISU

Setup time with global clock for registers used in PCI designs

(3), (4)

tPCIH

Hold time with global clock for registers used in PCI designs

(3), (4)

tPCICO

Clock-to-output delay with global clock for registers used in PCI designs

(3), (4)

Table 29. External Bidirectional Timing Parameters

Note (3)

Symbol

Parameter

Conditions

tINSUBIDIR

Setup time for bidirectional pins with global clock at same-row or same-

column LE register

tINHBIDIR

Hold time for bidirectional pins with global clock at same-row or same-column

LE register

tOUTCOBIDIR

Clock-to-output delay for bidirectional pins with global clock at IOE register

CI = 35 pF

tXZBIDIR

Synchronous IOE output buffer disable delay

CI = 35 pF

tZXBIDIR

Synchronous IOE output buffer enable delay, slow slew rate = off

CI = 35 pF

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