EP2S130F1020I4 Datasheet, PDF (638/768 Pages) List of Unclassifed Manufacturers – Stratix II Device Handbook, Volume 1

JTAG Configuration
Figure 7–35. JTAG Configuration of a Single Device Using a Download Cable
VCC (1)
(1) VCC
(1) VCC
10 kΩ
10 kΩ
GND ^N.C.
10 kΩ
VCC (1)
Stratix II Device
nCE (4)
nCE0
TCK
TDO
10 kΩ
TMS
nSTATUS
TDI
CONF_DONE
(2)
nCONFIG
VCC
(2)
MSEL[3..0]
TRST
Download Cable
10-Pin Male Header
(JTAG Mode)
(Top View)
Pin 1
VCC
GND
VIO (3)
10 kΩ
GND
GND
Notes to Figure 7–35:
(1) The pull-up resistor should be connected to the same supply voltage as the USB Blaster, MasterBlaster (V_IO pin),
ByteBlaster II, or ByteBlasterMV cable.
(2) The nCONFIG, MSEL[3..0] pins should be connected to support a non-JTAG configuration scheme. If only JTAG
configuration is used, connect nCONFIG to V_CC, and MSEL[3..0] to ground. Pull DCLK 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 should match the device’s
V_CCIO. Refer to the MasterBlaster Serial/USB Communications Cable User Guide 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.
To configure a single device in a JTAG chain, the programming software
places all other devices in bypass mode. In bypass mode, devices pass
programming data from the TDI pin to the TDO pin through a single
bypass register without being affected internally. This scheme enables the
programming software to program or verify the target device.
Configuration data driven into the device appears on the TDO pin one
clock cycle later.
The Quartus II software verifies successful JTAG configuration upon
completion. At the end of configuration, the software checks the state of
CONF_DONE through the JTAG port. When Quartus II generates a (.jam)
file for a multi-device chain, it contains instructions so that all the devices
in the chain will be initialized at the same time. If CONF_DONE is not high,
the Quartus II software indicates that configuration has failed. If
7–86
Stratix II Device Handbook, Volume 2
Altera Corporation
January 2008