Altera Cyclone IV - Device Configuration Pins

8–62 Chapter 8: Configuration and Remote System Upgrades in Cyclone IV Devices
Configuration
Cyclone IV Device Handbook, May 2013 Altera Corporation
Volume 1
Device Configuration Pins
Tab le 8 –1 8 through Ta ble 8–2 1 describe the connections and functionality of all the
configuration related pins on Cyclone IV devices. Ta ble 8–1 8 and Table 8–19 list the
device pin configuration for the Cyclone IV GX and Cyclone IV E, respectively.
Table 8–18. Configuration Pin Summary for Cyclone IV GX Devices
Bank Description Input/Output Dedicated Powered By Configuration Mode
8 Data[4:2] Input — V
CCIO
FPP
3 Data[7:5] Input — V
CCIO
FPP
9
nCSO
(2)
Output — V
CCIO
AS
3
CRC_ERROR Output — V
CCIO
/Pull-up
(1)
Optional, all modes
9
DATA[0]
(2)
Input Yes V
CCIO
PS, FPP, AS
9
DATA[1]/ASDO
(2)
Input
—
V
CCIO
FPP
Output V
CCIO
AS
3
INIT_DONE Output — Pull-up Optional, all modes
3
nSTATUS Bidirectional Yes Pull-up All modes
9
nCE Input Yes V
CCIO
All modes
9
DCLK
(2)
Input
Yes
V
CCIO
PS, FPP
Output V
CCIO
AS
3
CONF_DONE Bidirectional Yes Pull-up All modes
9
TDI Input Yes V
CCIO
JTAG
9
TMS Input Yes V
CCIO
JTAG
9
TCK Input Yes V
CCIO
JTAG
9
nCONFIG Input Yes V
CCIO
All modes
8
CLKUSR Input — V
CCIO
Optional
3
nCEO Output — V
CCIO
Optional, all modes
3
MSEL Input Yes V
CCINT
All modes
9
TDO Output Yes V
CCIO
JTAG
6
DEV_OE Input — V
CCIO
Optional
6
DEV_CLRn Input — V
CCIO
Optional
Notes to Table 8–18:
(1) The CRC_ERROR pin is a dedicated open-drain output or an optional user I/O pin. Active high signal indicates that the error detection circuit has
detected errors in the configuration SRAM bits. This pin is optional and is used when the CRC error detection circuit is enabled in the Quartus II
software from the Error Detection CRC tab of the Device and Pin Options dialog box. When using this pin, connect it to an external 10-k
pull-up resistor to an acceptable voltage that satisfies the input voltage of the receiving device.
(2) To tri-state AS configuration pins in the AS configuration scheme, turn on the Enable input tri-state on active configuration pins in user mode
option from the Device and Pin Options dialog box. This tri-states
DCLK , nCSO , Data[0] , and Data[1]/ASDO pins. Dual-purpose pins settings
for these pins are ignored. To set these pins to different settings, turn off the Enable input tri-state on active configuration pins in user mode
option and set the desired setting from the Dual-purpose Pins Setting menu.
Table 8–19. Configuration Pin Summary for Cyclone IV E Devices (Part 1 of 3)
Bank Description Input/Output Dedicated Powered By Configuration Mode
1
nCSO
(1)
FLASH_nCE
(2)
Output — V
CCIO
AS, AP
6
CRC_ERROR
(3)
Output — V
CCIO
/Pull-up
(4)
Optional, all modes