EP3C10U256C6N Datasheet, PDF (215/274 Pages) Altera Corporation – Cyclone III Device Family Overview

Chapter 9: Configuration, Design Security, and Remote System Upgrades in the Cyclone III Device Family
Configuration Features
9–57
Figure 9–29. Combining JTAG and AS Configuration Schemes
V_CCIO(1) V_CCIO(1) V_CCIO(1)
10 kΩ 10 kΩ 10 kΩ
Cyclone III Device Family
nSTATUS
V_CCA
CONF_DONE nCEO N.C.
nCONFIG
(8)
Serial ^10kΩ
Configuration
3.3 V 3.3 V
3.3 V _{3.3 V}
nCE
(4)
MSEL [3..0]
V_CCA
(8)
Device
GND
(7)
Download Cable
DATA
DATA[0]
TCK
(JTAG Mode)
DCLK
nCS
DCLK
nCSO (5)
TDO
TMS
10-Pin Male Header
(top view)
ASDI
ASDO (5)
TDI
Pin 1
V_CCA (6)
Pin 1 _{3.3 V (2)}
V_IO (3)
Download Cable
(AS Mode)
10-Pin Male Header
10 pf
GND
10 pf
GND
10 pf
10 pf _GND
1 kΩ
GND
(7)
GND
Notes to Figure 9–29:
(1) Connect these pull-up resistors to the V_CCIO supply of the bank in which the pin resides.
(2) Power up the V_CC of the ByteBlaster II, USB-Blaster, or Ethernet Blaster cable with the 3.3-V supply.
(3) Pin 6 of the header is a V_IO reference voltage for the MasterBlaster output driver. V_IO must match the V_CCA of the
device. For this value, refer to the MasterBlaster Serial/USB Communications Cable User Guide. In ByteBlasterMV,
this pin is a no connect. In USB-Blaster and ByteBlaster II, this pin is connected to nCE when it is used for AS
programming, otherwise it is a no connect.
(4) The MSEL pin settings vary for different configuration voltage standards and POR time. To connect MSEL[3..0]for
AS configuration schemes, refer to Table 9–7 on page 9–11. Connect the MSEL pins directly to V_CCA or GND.
(5) These are dual-purpose I/O pins. This nCSO pin functions as the FLASH_NCE pin in AP mode. The ASDO pin functions
as the DATA[1] pin in other AP and FPP modes.
(6) Power up V_CC of the ByteBlaster II, USB-Blaster, ByteBlasterMV, or Ethernet Blaster 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) You must place the diodes and capacitors as close as possible to the Cyclone III device family. For effective voltage
clamping, Altera recommends using the Schottky diode, which has a relatively lower forward diode voltage (VF) than
the switching and Zener diodes. For more information about the interface guidelines using Schottky diodes, refer to
AN 523: Cyclone III Configuration Interface Guidelines with EPCS Devices.
(8) The resistor value can vary from 1 k to 10 k. Perform signal integrity analysis to select the resistor value for your
setup.
August 2012 Altera Corporation
Cyclone III Device Handbook
Volume 1