Configuring Cyclone II Devices
Figure 13–25. JTAG Configuration of a Single Device Using a Download Cable
V
(1)
CC
1 kΩ
V
(1)
V
(1)
CC
CC
V
(1)
CC
10 kΩ
10 kΩ
V
(1)
CC
1 kΩ
Cyclone II Device
10 kΩ
nCE (4)
TCK
TDO
N.C.
nCE0
GND
TMS
TDI
USB Blaster, ByteBlaster II,
MasterBlaster, or
ByteBlasterMV 10-Pin Male
Header (Top View)
nSTATUS
CONF_DONE
nCONFIG
MSEL0
(2)
(2)
Pin 1
V
Serial Configuration Device
CC
MSEL1
GND
(3)
Serial
Flash
V
ASDI
nCS
DCLK
DATA
ASDO
nCSO
DCLK
DATA0
IO
Loader
1 kΩ
GND
GND
Notes to Figure 13–25:
(1) The pull-up resistor should be connected to the same supply voltage as the USB Blaster, MasterBlaster (VIO pin),
ByteBlaster II, or ByteBlasterMV cable.
(2) The nCONFIG, MSEL[1..0]pins should be connected to support a non-JTAG configuration scheme. If only JTAG
configuration is used, connect nCONFIGto VCC, and MSEL[1..0] to ground. Pull DCLKeither high or low,
whichever is convenient on your board.
(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
cable, this pin is a no connect. In the USB Blaster and ByteBlaster II cables, this pin is connected to nCEwhen it is
used for active serial programming, otherwise it is a no connect.
(4) nCEmust be connected to GND or driven low for successful JTAG configuration.
ISP of Serial Configuration Device
In the second stage, the serial flash loader design in the master Cyclone II
device allows you to write the configuration data for the device chain into
the serial configuration device by using the Cyclone II JTAG interface.
The JTAG interface sends the programming data for the serial
configuration device to the Cyclone II device first. The Cyclone II device
then uses the ASMI pins to transmit the data to the serial configuration
device.
Altera Corporation
February 2007
13–63
Cyclone II Device Handbook, Volume 1
ALTERA [ ALTERA CORPORATION ]
