CDPCLK4 datasheet(226/274 Pages) ALTERA

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

Configuration Features

Cyclone III Device Handbook

August 2012

Altera Corporation

Volume 1

DATA[0]

(1), (2)

I/O

PS, FPP, AS,

AP (3)

Input (PS,

FPP, AS).

Bidirectional

(AP) (3)

Data input. In serial configuration modes, bit-wide

configuration data is presented to the target Cyclone III

device family on the DATA[0] pin.

In AS mode, DATA[0] has an internal pull-up resistor that is

always active. After AS configuration, DATA[0] is a dedicated

input pin with optional user control.

After PS or FPP configuration, DATA[0] is available as a user

I/O pin and the state of this pin depends on the Dual-Purpose

Pin settings.

After AP configuration, DATA[0] is a dedicated bidirectional

pin with optional user control. (3)

DATA[1]

ASDO (1), (2)

I/O

FPP, AS, AP (3)

Input (FPP),

Output (AS).

Bidirectional

(AP) (3)

Data input in non-AS mode. Control signal from the

Cyclone III device family to the serial configuration device in

AS mode used to read out configuration data. The DATA[1]

pin functions as the ASDO pin in AS mode.

In AS mode, DATA[1] has an internal pull-up resistor that is

always active. After AS configuration, DATA[1] is a dedicated

output pin with optional user control.

In PS configuration scheme, DATA[1] functions as user I/O

pin during configuration, which means it is tri-stated.

After FPP configuration, DATA[1] is available as a user I/O

pin and the state of this pin depends on the Dual-Purpose

Pin settings.

In AP configuration scheme, which is for Cyclone III devices

only, the byte-wide or word-wide configuration data is

presented to the target Cyclone III device on DATA[7..0] or

DATA[15..0]

, respectively. After AP configuration, DATA[1]

is a dedicated bidirectional pin with optional user control. (3)

DATA[7..2]

I/O

FPP, AP (3)

Inputs

(FPP).

Bidirectional

(AP) (3)

Data inputs.

In AS or PS configuration schemes, they function as user I/O

pins during configuration, which means they are tri-stated.

After FPP configuration, DATA[7..2] are available as user

I/O pins and the state of these pin depends on the

Dual-Purpose Pin settings.

The byte-wide or word-wide configuration data is presented

to the target Cyclone III device on DATA[7..0] or

DATA[15..0]

, respectively, in the AP configuration scheme

(for Cyclone III devices only). After AP configuration,

DATA[7..2]

are dedicated bidirectional pins with optional

user control. (3)

DATA[15..8]

I/O

AP (3)

Bidirectional

Data inputs. Word-wide configuration data is presented to the

target Cyclone III device on DATA[15..0].

In PS, FPP, or AS configuration schemes, they function as

user I/O pins during configuration, which means they are

tri-stated.

After AP configuration, DATA[15:8] are dedicated

bidirectional pins with optional user control.

Table 9–22. Dedicated Configuration Pins on Cyclone III Device Family (Part 3 of 4)

Pin Name

User

Mode

Configuration

Scheme

Pin Type

Description

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