Configuring Cyclone II Devices
Quartus II programmer and a download cable. Figure 13–19 shows the PS
configuration for Cyclone II devices using a USB-Blaster, MasterBlaster,
ByteBlaster II or ByteBlasterMV cable.
Figure 13–19. PS Configuration Using a USB-Blaster, MasterBlaster, ByteBlaster II or ByteBlasterMV Cable
V
(1)
CC
(2)
(1)
10 kΩ
V
V
(1)
V
(1)
V
CC
(1)
CC
CC
CC
10 kΩ
(2)
10 kΩ
10 kΩ
10 kΩ
Cyclone II Device
CONF_DONE
nSTATUS
V
CC
MSEL0
MSEL1
USB-Blaster, ByteBlaster II,
MasterBlaster,
or ByteBlasterMV
10-Pin Male Header
nCEO
N.C. (4)
nCE
GND
DCLK
DATA0
nCONFIG
Pin 1
V
CC
GND
VIO (3)
Shield
GND
Notes to Figure 13–19:
(1) The pull-up resistor should be connected to the same supply voltage as the USB-Blaster, MasterBlaster (VIOpin),
ByteBlaster II, or ByteBlasterMV cable.
(2) The pull-up resistors on DATA0and DCLKare only needed if the download cable is the only configuration scheme
used on your board. This is to ensure that DATA0and DCLKare not left floating after configuration. For example, if
you are also using a configuration device, the pull-up resistors on DATA0and DCLKare not needed.
(3) Pin 6 of the header is a VIO reference voltage for the MasterBlaster output driver. VIO should match the device’s
VCCIO. Refer to the MasterBlaster Serial/USB Communications Cable Data Sheet for this value. In the ByteBlasterMV,
this pin is a no connect. In the USB-Blaster and ByteBlaster II, this pin is connected to nCEwhen it is used for AS
programming, otherwise it is a no connect.
(4) The nCEOpin can be left unconnected or used as a user I/O pin when it does not feed other device’s nCEpin.
You can use a download cable to configure multiple Cyclone II devices by
connecting each device’s nCEOpin to the subsequent device’s nCEpin.
Connect the first Cyclone II device’s nCEpin to GND and connect its
nCEOpin to the nCEpin of the next device in the chain. Use an external
10-kΩpull-up resistor to pull the nCEOpin high to VCCIO when it feeds
next device’s nCEpin. Connect all other configuration pins (nCONFIG,
nSTATUS, DCLK, DATA0, and CONF_DONE) on every device in the chain
together. Because all CONF_DONEpins are connected, all devices in the
chain initialize and enter user mode at the same time.
Altera Corporation
February 2007
13–49
Cyclone II Device Handbook, Volume 1
ALTERA [ ALTERA CORPORATION ]
