FLEX 10K Embedded Programmable Logic Device Family Data Sheet
Table 36. Interconnect Timing Microparameters
Note (1)
Symbol Parameter
Conditions
tDIN2IOE
Delay from dedicated input pin to IOE control input
Delay from dedicated clock pin to LE or EAB clock
Delay from dedicated input or clock to LE or EAB data
Delay from dedicated clock pin to IOE clock
(7)
(7)
(7)
(7)
(7)
tDCLK2LE
tDIN2DATA
tDCLK2IOE
tDIN2LE
Delay from dedicated input pin to LE or EAB control input
Routing delay for an LE driving another LE in the same LAB
tSAMELAB
tSAMEROW
Routing delay for a row IOE, LE, or EAB driving a row IOE, LE, or EAB in the (7)
same row
tSAMECOLUMN Routing delay for an LE driving an IOE in the same column
(7)
tDIFFROW
Routing delay for a column IOE, LE, or EAB driving an LE or EAB in a different (7)
row
tTWOROWS
tLEPERIPH
Routing delay for a row IOE or EAB driving an LE or EAB in a different row (7)
Routing delay for an LE driving a control signal of an IOE via the peripheral (7)
control bus
tLABCARRY
tLABCASC
Routing delay for the carry-out signal of an LE driving the carry-in signal of a
different LE in a different LAB
Routing delay for the cascade-out signal of an LE driving the cascade-in
signal of a different LE in a different LAB
Table 37. External Timing Parameters
Notes (8), (10)
Symbol
Parameter
Conditions
tDRR
Register-to-register delay via four LEs, three row interconnects, and four local (9)
interconnects
tINSU
tINH
Setup time with global clock at IOE register
Hold time with global clock at IOE register
tOUTCO
Clock-to-output delay with global clock at IOE register
Table 38. External Bidirectional Timing Parameters
Note (10)
Symbol
Parameter
Condition
tINSUBIDIR
tINHBIDIR
tOUTCOBIDIR
tXZBIDIR
Setup time for bidirectional pins with global clock at adjacent LE register
Hold time for bidirectional pins with global clock at adjacent LE register
Clock-to-output delay for bidirectional pins with global clock at IOE register
Synchronous IOE output buffer disable delay
tZXBIDIR
Synchronous IOE output buffer enable delay, slow slew rate = off
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