2–34
Chapter 2: Device Datasheet for Cyclone V Devices
Configuration Specification
Table 2–38 lists the PS timing parameter for Cyclone V devices.
Table 2–38. PS Timing Parameters for Cyclone V Devices—Preliminary
Symbol
tCF2CD
Parameter
nCONFIGlow to CONF_DONElow
nCONFIGlow to nSTATUSlow
Minimum
Maximum
600
Unit
ns
—
—
tCF2ST0
600
ns
nCONFIGlow pulse width
2
—
µs
µs
tCFG
(1)
nSTATUSlow pulse width
268
1506
tSTATUS
tCF2ST1
tCF2CK
tST2CK
tDSU
tDH
(2)
nCONFIGhigh to nSTATUShigh
nCONFIGhigh to first rising edge on DCLK
nSTATUShigh to first rising edge of DCLK
DATA[]setup time before rising edge on DCLK
DATA[]hold time after rising edge on DCLK
DCLKhigh time
—
1506
µs
1506
—
—
—
—
—
—
—
125
40
40
437
—
—
—
µs
2
µs
5.5
ns
0
ns
0.45 x 1/fMAX
ns
tCH
DCLKlow time
0.45 x 1/fMAX
ns
tCL
DCLKperiod
1/fMAX
ns
tCLK
DCLKfrequency
—
MHz
ns
fMAX
tR
Input rise time
—
Input fall time
—
175
ns
tF
CONF_DONEhigh to user mode (3)
CONF_DONEhigh to CLKUSRenabled
CONF_DONEhigh to user mode with CLKUSRoption on
Number of clock cycles required for device initialization
µs
tCD2UM
tCD2CU
tCD2UMC
Tinit
4 x maximum DCLKperiod
—
tCD2CU + (Tinit
x
CLKUSRperiod)
—
17,408
Cycles
Notes to Table 2–38:
(1) You can obtain this value if you do not delay configuration by extending the nCONFIGor nSTATUSlow pulse width.
(2) You can obtain this value if you do not delay configuration by externally holding nSTATUSlow.
(3) The minimum and maximum numbers apply only if you chose the internal oscillator as the clock source for initializing the device.
Cyclone V Device Handbook
February 2012 Altera Corporation
Volume 1: Device Overview and Datasheet
ALTERA [ ALTERA CORPORATION ]
