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Configuration Specification

Cyclone V Device Datasheet

June 2013

Altera Corporation

Remote System Upgrades Circuitry Timing Specification

Table 57 lists the timing parameter specifications for the remote system upgrade

circuitry.

User Watchdog Internal Oscillator Frequency Specification

Table 58 lists the frequency specifications for the user watchdog internal oscillator.

Cyclone V ST

100

140

125

100

140

125

Notes to Table 55:

(1) DCLK frequency of 100 MHz using external CLKUSR.

(2) Maximum FPGA FPP bandwidth may exceed bandwidth available from some external storage or control logic.

Table 56. Minimum Configuration Time Estimation for Cyclone V Devices—Preliminary (Part 2 of 2)

Variant

Member Code

Active Serial (1)

Fast Passive Parallel (2)

Width

DCLK

(MHz)

Minimum

Configuration

Time (ms)

Width

DCLK

(MHz)

Minimum

Configuration Time

(ms)

Table 57. Remote System Upgrade Circuitry Timing Specification for Cyclone V Devices—

Preliminary

Parameter

Minimum

Maximum

Unit

tMAX_RU_CLK (1)

—

MHz

tRU_nCONFIG (2)

250

—

tRU_nRSTIMER (3)

250

—

Notes to Table 57:

(1) This clock is user-supplied to the remote system upgrade circuitry. If you are using the ALTREMOTE_UPDATE

megafunction, the clock user-supplied to the ALTREMOTE_UPDATE megafunction must meet this specification.

(2) This is equivalent to strobing the reconfiguration input of the ALTREMOTE_UPDATE megafunction high for the

minimum timing specification. For more information, refer to the “Remote System Upgrade State Machine”

section in the Configuration, Design Security, and Remote System Upgrades in Cyclone V Devices chapter.

(3) This is equivalent to strobing the reset timer input of the ALTREMOTE_UPDATE megafunction high for the

minimum timing specification. For more information, refer to the “User Watchdog Timer” section in the

Configuration, Design Security, and Remote System Upgrades in Cyclone V Devices chapter.

Table 58. User Watchdog Internal Oscillator Frequency Specifications for Cyclone V Devices—

Preliminary

Parameter

Minimum

Typical

Maximum

Unit

User watchdog internal

oscillator frequency

5.3

7.9

12.5

MHz

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