9–50
Chapter 9: Configuration, Design Security, and Remote System Upgrades in the Cyclone III Device Family
Configuration Features
For device VCCIO of 1.2, 1.5, and 1.8 V, refer to Figure 9–25. You can power up the VCC
of the download cabled with the supply from VCCIO
.
Figure 9–24. JTAG Configuration of a Single Device Using a Download Cable (2.5, 3.0, and 3.3-V
VCCIO Powering the JTAG Pins)
V
CCA
(1)
V
(2)
CCIO
V
CCA
V
(2)
10 kΩ
CCIO
(1)
Cyclone III Device Family
nCE (3)
10 kΩ
TCK
TDO
GND
N.C. (4) nCEO
TMS
TDI
Download Cable 10-Pin Male
Header (Top View)
nSTATUS
CONF_DONE
nCONFIG
MSEL[3..0]
DATA[0]
(5)
(5)
Pin 1
V
(6)
CCA
(5)
(5)
DCLK
GND
(7)
V
IO
1 kΩ
GND
GND
Notes to Figure 9–24:
(1) The resistor value can vary from 1 k to 10 k. Perform signal integrity analysis to select the resistor value for your
setup.
(2) Connect these pull-up resistors to the VCCIO supply of the bank in which the pin resides.
(3) The nCE pin must be connected to GND or driven low for successful JTAG configuration.
(4) The nCEOpin is left unconnected or used as a user I/O pin when it does not feed the nCEpin of another device.
(5) Connect the nCONFIGand MSEL[3..0] pins to support a non-JTAG configuration scheme. If you only use a JTAG
configuration, connect the nCONFIGpin to logic high and the MSEL[3..0] pins to ground. In addition, pull DCLKand
DATA[0]either high or low, whichever is convenient on your board.
(6) Power up the VCC of the ByteBlaster II, USB-Blaster, ByteBlasterMV, or Ethernet Blaster cable with a 2.5- V supply
from VCCA. Third-party programmers must switch to 2.5 V. Pin 4 of the header is a VCC power supply for the
MasterBlaster 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 MasterBlaster Serial/USB Communications Cable User
Guide.
(7) Pin 6 of the header is a VIO reference voltage for the MasterBlaster output driver. VIO must match the device's VCCA
For this value, refer to the MasterBlaster Serial/USB Communications Cable User Guide. In USB-Blaster,
ByteBlaster II, ByteBlasterMV, and Ethernet Blaster, this pin is a no connect.
.
Cyclone III Device Handbook
Volume 1
August 2012 Altera Corporation
ALTERA [ ALTERA CORPORATION ]
