Altera Cyclone IV Device Handbook page 211

Chapter 8: Configuration and Remote System Upgrades in Cyclone IV Devices
Configuration
For device using V
maintain a maximum AC voltage of 4.1 V because JTAG pins do not have the internal
PCI clamping diodes to prevent voltage overshoot when using V
3.3 V. You must power up the V
V
CCA
up the V
Figure 8–23. JTAG Configuration of a Single Device Using a Download Cable (2.5, 3.0, and 3.3-V
V
CCIO
Notes to
(1) Connect these pull-up resistors to the V
(2) Connect the nCONFIG and MSEL pins to support a non-JTAG configuration scheme. If you only use JTAG
configuration, connect the nCONFIG pin to logic-high and the MSEL pins to GND. In addition, pull DCLK and DATA[0]
to either high or low, whichever is convenient on your board.
(3) Pin 6 of the header is a V
For this value, refer to the
ByteBlaster II, ByteBlasterMV, and EthernetBlaster cables, this pin is a no connect.
(4) The nCE pin must be connected to GND or driven low for successful JTAG configuration.
(5) The nCEO pin is left unconnected or used as a user I/O pin when it does not feed the nCE pin of another device.
(6) Power up the V
V
cable. The MasterBlaster cable can receive power from either 5.0- or 3.3-V circuit boards, DC power supply, or 5.0 V
from the USB cable. For this value, refer to the
(7) Resistor value can vary from 1 k to 10 k..
May 2013 Altera Corporation
of 2.5, 3.0, and 3.3 V, refer to
CCIO
. For device using V
CCIO
of the download cable with the supply from V
CC
Powering the JTAG Pins)
V (1)
CCIO
V (1)
10 kΩ
CCIO
nCE (4)
10 kΩ
GND
N.C. (5)
nCEO
nSTATUS
CONF_DONE
nCONFIG
(2)
(2)
DATA[0]
(2)
DCLK
(2)
Figure 8–23:
reference voltage for the MasterBlaster output driver. V
IO
MasterBlaster Serial/USB Communications Cable User
of the EthernetBlaster, ByteBlaster II, USB-Blaster, or ByteBlasterMV cable with a 2.5-V supply from
CC
. Third-party programmers must switch to 2.5 V. Pin 4 of the header is a V
CCA
Figure
of the download cable with a 2.5-V supply from
CC
of 1.2, 1.5, and 1.8 V, refer to
V
CCA
(7)
V
CCA
Cyclone IV Device
TCK
TDO
TMS
TDI
MSEL[ ]
supply of the bank in which the pin resides.
CCIO
MasterBlaster Serial/USB Communications Cable User
8–23. All I/O inputs must
of 2.5, 3.0, and
CCIO
Figure 8–24. You can power
.
CCIO
(7)
Download Cable 10-Pin Male
Header (Top View)
Pin 1
V
CCA (6)
GND
V (3)
IO
1 kΩ
GND GND
must match the device's V
IO
Guide. When using the USB-Blaster,
power supply for the MasterBlaster
CC
Guide.
Cyclone IV Device Handbook,
8–47
.
CCA
Volume 1