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| EP2C8T144C8N Datasheet, PDF (417/470 Pages) Altera Corporation – Cyclone II Device Handbook, Volume 1 | |||
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Configuring Cyclone II Devices
Figure 13â25. JTAG Configuration of a Single Device Using a Download Cable
VCC (1)
VCC (1)
VCC (1)
10 kΩ VCC (1)
10 kΩ
10 kΩ
GND N.C.
1 kΩ
Cyclone II Device
nCE (4)
nCE0
TCK
TDO
VCC (1)
1 kΩ
(2)
Serial Configuration Device (2)
nSTATUS
CONF_DONE
nCONFIG
MSEL0
MSEL1
TMS
TDI
USB Blaster, ByteBlaster II,
MasterBlaster, or
ByteBlasterMV 10-Pin Male
Header (Top View)
Pin 1
VCC
ASDI
nCS
DCLK
DATA
ASDO
nCSO
DCLK
DATA0
Serial
Flash
Loader
1 kΩ
GND
VIO (3)
GND
GND
Notes to Figure 13â25:
(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 nCONFIG to VCC, and MSEL[1..0] to ground. Pull DCLK either 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 deviceâs
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 nCE when it is
used for active serial programming, otherwise it is a no connect.
(4) nCE must 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
13â63
Cyclone II Device Handbook, Volume 1
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