9–68
Chapter 9: Configuration, Design Security, and Remote System Upgrades in the Cyclone III Device Family
Configuration Features
Table 9–22. Dedicated Configuration Pins on Cyclone III Device Family (Part 3 of 4)
User
Mode
Configuration
Scheme
Pin Name
Pin Type
Description
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.
Input (PS,
FPP, AS).
Bidirectional
(AP) (3)
DATA[0]
(1), (2)
PS, FPP, AS,
I/O
(3)
AP
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
(3)
pin with optional user control.
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 ASDOpin 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.
Input (FPP),
Output (AS).
Bidirectional
In PS configuration scheme, DATA[1]functions as user I/O
pin during configuration, which means it is tri-stated.
DATA[1]
ASDO
,
(3)
I/O
FPP, AS, AP
(1), (2)
(3)
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.
(AP)
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]
(3)
is a dedicated bidirectional pin with optional user control.
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.
Inputs
(FPP).
(3)
DATA[7..2]
I/O
FPP, AP
Bidirectional
The byte-wide or word-wide configuration data is presented
to the target Cyclone III device on DATA[7..0]or
(3)
(AP)
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
(3)
user control.
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
Bidirectional user I/O pins during configuration, which means they are
tri-stated.
(3)
DATA[15..8]
I/O
AP
After AP configuration, DATA[15:8]are dedicated
bidirectional pins with optional user control.
Cyclone III Device Handbook
Volume 1
August 2012 Altera Corporation
ALTERA [ ALTERA CORPORATION ]
