EP2AGX95EF29C6N Datasheet, PDF (317/380 Pages) Altera Corporation – Device Interfaces and Integration

Chapter 9: Configuration, Design Security, and Remote System Upgrades in Arria II Devices
PS Configuration
9–31
Figure 9–14 shows a PS configuration for Arria II devices using a USB-Blaster,
EthernetBlaster, EthernetBlaster II, or ByteBlaster II cable.
Figure 9–14. PS Configuration Using a USB-Blaster, EthernetBlaster, EthernetBlaster II, or ByteBlaster II Cable
V_CCIO/V_CCPGM
(1)
V_CCIO/V_CCPGM
(1)
10 kΩ
10 kΩ
(2)
V_CCIO/V_CCPGM
(1)
10 kΩ
(2)
V_CCIO/V_CCPGM V_CCIO/V_CCPGM
(1)
(1)
Arria II Device
CONF_DONE
nSTATUS
10 kΩ 10 kΩ
(3)
MSEL[n..0]
GND
nCE
DCLK
DATA0
nCONFIG
nCEO N.C.
Download Cable
10-Pin Male Header
(PS Mode)
Pin 1
V_CCIO/V_CCPGM (1)
GND
V_IO (4)
Shield
GND
Notes to Figure 9–14:
(1) Connect the pull-up resistor to the same supply voltage, V_CCIO for Arria II GX devices or V_CCPGM for Arria II GZ devices as the USB-Blaster,
EthernetBlaster, EthernetBlaster II, or ByteBlaster II cable.
(2) You only need the pull-up resistors on DATA0 and DCLK if the download cable is the only configuration scheme used on your board. This ensures
that DATA0 and DCLK are not left floating after configuration. For example, if you are also using a configuration device, you do not need the pull-up
resistors on DATA0 and DCLK.
(3) The MSEL pin settings vary for different configuration voltage standards and POR delays. To connect MSEL[3..0]for an Arria II GX device, refer
to Table 9–6 on page 9–9. To connect MSEL[2..0] for an Arria II GZ device, refer to Table 9–7 on page 9–10.
(4) In the USB-Blaster and ByteBlaster II cables, this pin is connected to nCE when it is used for AS programming; otherwise, it is a no connect.
You can use a download cable to configure multiple Arria II devices by connecting the
nCEO pin of each device to the nCE pin of the subsequent device. The nCE pin of the first
device is connected to GND, while its nCEO pin is connected to the nCE of the next
device in the chain. The nCE input of the last device comes from the previous device,
while its nCEO pin is left floating. All other configuration pins (nCONFIG, nSTATUS, DCLK,
DATA0, and CONF_DONE) are connected to every device in the chain. Because all
CONF_DONE pins are tied together, all devices in the chain initialize and enter user mode
at the same time.
In addition, because the nSTATUS pins are tied together, the entire chain halts
configuration if any device detects an error. The Auto-restart configuration after
error option does not affect the configuration cycle because you must manually restart
configuration in the Quartus II software when an error occurs.
July 2012 Altera Corporation
Arria II Device Handbook Volume 1: Device Interfaces and Integration