CDPCLK4 datasheet(223/274 Pages) ALTERA

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Chapter 9: Configuration, Design Security, and Remote System Upgrades in the Cyclone III Device Family

9–65

Configuration Features

August 2012

Altera Corporation

Cyclone III Device Handbook

Volume 1

Table 9–21 lists the Cyclone III device family pin configuration.

Table 9–21. Cyclone III Device Family Configuration Pin Summary

Bank

Description

Input/Output

Dedicated

Configuration Mode

FLASH_nCE, nCSO

Output

—

VCCIO

AS, AP (2)

CRC_ERROR

Output

—

VCCIO/Pull-up (1)

Optional, all modes

DATA[0]

Input

Yes

VCCIO

PS, FPP, AS

Bidirectional

VCCIO

AP (2)

DATA[1], ASDO

Input

—

VCCIO

FPP

Output

VCCIO

Bidirectional

VCCIO

AP (2)

DATA[7..2]

Input

—

VCCIO

FPP

Bidirectional

VCCIO

AP (2)

DATA[15..8]

Bidirectional

VCCIO

AP (2)

INIT_DONE

Output

—

Pull-up

Optional, all modes

nSTATUS

Bidirectional

Yes

Pull-up

All modes

nCE

Input

Yes

VCCIO

All modes

DCLK

Input

Yes

VCCIO

PS, FPP

Output

VCCIO

AS, AP (2)

CONF_DONE

Bidirectional

Yes

Pull-up

All modes

TDI

Input

Yes

VCCIO

JTAG

TMS

Input

Yes

VCCIO

JTAG

TCK

Input

Yes

VCCIO

JTAG

nCONFIG

Input

Yes

VCCIO

All modes

CLKUSR

Input

—

VCCIO

Optional

nCEO

Output

—

VCCIO

Optional, all modes

MSEL[3..0]

Input

Yes

VCCINT

All modes

TDO

Output

Yes

VCCIO

JTAG

PADD[14..0]

Output

—

VCCIO

AP (2)

PADD[19..15]

Output

—

VCCIO

AP (2)

PADD[23..20]

Output

—

VCCIO

AP (2)

nRESET

Output

—

VCCIO

AP (2)

nAVD

Output

—

VCCIO

AP (2)

nOE

Output

—

VCCIO

AP (2)

nWE

Output

—

VCCIO

AP (2)

DEV_OE

Input

—

VCCIO

Optional, AP (2)

DEV_CLRn

Input

—

VCCIO

Optional, AP (2)

Notes to Table 9–21:

(1) In Cyclone III devices, the CRC_ERROR pin is a dedicated output by default. Optionally, you can enable the CRC_ERROR pin as an open-drain output

in the CRC Error Detection tab from the Device and Pin Options dialog box.

(2) AP configuration is for Cyclone III devices only.

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