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Chapter 8: Configuration and Remote System Upgrades in Cyclone IV Devices
8–47
Configuration
May 2013
Altera Corporation
For device using V
CCIO
of 2.5, 3.0, and 3.3 V, refer to
. All I/O inputs must
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
CCIO
of 2.5, 3.0, and
3.3 V. You must power up the V
CC
of the download cable with a 2.5-V supply from
V
CCA
. For device using V
CCIO
of 1.2, 1.5, and 1.8 V, refer to
. You can power
up the V
CC
of the download cable with the supply from V
CCIO
.
Figure 8–23. JTAG Configuration of a Single Device Using a Download Cable (2.5, 3.0, and 3.3-V
V
CCIO
Powering the JTAG Pins)
Notes to
(1) Connect these pull-up resistors to the V
CCIO
supply of the bank in which the pin resides.
(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
IO
reference voltage for the MasterBlaster output driver. V
IO
must match the device’s V
CCA
.
For this value, refer to the
MasterBlaster Serial/USB Communications Cable User Guide
. When using the USB-Blaster,
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
CC
of the EthernetBlaster, ByteBlaster II, USB-Blaster, or ByteBlasterMV cable with a 2.5-V supply from
V
CCA
. Third-party programmers must switch to 2.5 V. Pin 4 of the header is a V
CC
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) Resistor value can vary from 1 k
to 10 k
..
nCE
(4)
MSEL[ ]
nCO
N
FIG
CO
N
F_DO
N
E
V
CCA
V
CCA
(6)
G
N
D
V
CCIO
(1)
G
N
D
V
CCIO
(1)
(2)
V
CCA
10 k
Ω
10 k
Ω
(7)
nSTATUS
Pi
n
1
Dow
n
load Cable 10-Pi
n
Male
Heade
r
(Top View)
G
N
D
TCK
TDO
TMS
TDI
G
N
D
V
IO
(3)
Cyclone I
V
De
v
ice
nCEO
N
.C.
(5)
DCLK
DATA[0]
(2)
(2)
(2)
(7)
1 k
Ω
Summary of Contents for Cyclone IV
Page 10: ...x Chapter Revision Dates Cyclone IV Device Handbook March 2016 Altera Corporation Volume 1...
Page 14: ...I 2 Section I Device Core Cyclone IV Device Handbook March 2016 Altera Corporation Volume 1...
Page 274: ...vi Contents Cyclone IV Device Handbook February 2015 Altera Corporation Volume 2...
Page 440: ...iv Contents Cyclone IV Device Handbook December 2016 Altera Corporation Volume 3...
Page 442: ...vi Chapter Revision Dates Cyclone IV Device Handbook December 2016 Altera Corporation Volume 3...
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