DK-DEV-4SGX230N Altera, DK-DEV-4SGX230N Datasheet - Page 356

• Manufacturer Part Number: DK-DEV-4SGX230N
• Description: KIT DEVELOPMENT STRATIX IV
• Manufacturer: Altera
• Series: Stratix® IVr
• Type: FPGAr

Specifications of DK-DEV-4SGX230N

• Contents: Development Board, Universal Power Supply, Cables and Software
• Silicon Manufacturer: Altera
• Core Architecture: FPGA
• Core Sub-architecture: Stratix
• Silicon Core Number: EP4S
• Silicon Family Name: Stratix IV GX
• Rohs Compliant: Yes
• For Use With/related Products: EP4SGX230K
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 544-2594

10–22
Figure 10–8. Multi-Device Fast AS Configuration When the Devices Receive the Same Data Using a Single .sof
Notes to
(1) Connect the pull-up resistors to V
(2) Connect the repeater buffers between the Stratix IV master and slave device(s) for DATA[0] and DCLK. This is to prevent potential signal
Stratix IV Device Handbook Volume 1
integrity and clock skew problems.
Figure
Estimating Active Serial Configuration Time
10–8:
1
Serial Configuration
Figure 10–8
the same data using a single .sof.
Active serial configuration time is dominated by the time it takes to transfer data from
the serial configuration device to the Stratix IV device. This serial interface is clocked
by the Stratix IV DCLK output (generated from an internal oscillator) and must be set to
40 MHz (25 ns).Therefore, the minimum configuration time estimate for an EP4SE230
device (94, 600, 000 bits of uncompressed data) is:
RBF Size × (minimum DCLK period / 1 bit per DCLK cycle) = estimated minimum
configuration time
94, 600, 000 bits × (25 ns / 1 bit) = 2365 ms
The calculation above is based on a preliminary uncompressed .rbf size. The final .rbf
size will be available after the Quartus II software is able to generate the .rbf.
Enabling compression reduces the amount of configuration data that is transmitted to
the Stratix IV device, which also reduces configuration time. On average, compression
reduces configuration time, depending on the design.
Device
DATA
DCLK
ASDI
nCS
V
CCPGM (1)
CCPGM
10 kΩ
at a 3.0-V supply.
V
shows the multi-device fast AS configuration when the devices receive
CCPGM (1)
Buffers (2)
Chapter 10: Configuration, Design Security, and Remote System Upgrades in Stratix IV Devices
10 kΩ
V
GND
CCPGM (1)
10 kΩ
nSTATUS
CONF_DONE
nCONFIG
nCE
DATA0
DCLK
nCSO
ASDO
Device Master
Stratix IV
MSEL2
MSEL1
MSEL0
nCEO
V
N.C.
CCPGM
GND
GND
Fast Active Serial Configuration (Serial Configuration Devices)
nSTATUS
CONF_DONE
nCONFIG
nCE
DATA0
DCLK
nSTATUS
CONF_DONE
nCONFIG
nCE
DATA0
DCLK
nSTATUS
CONF_DONE
nCONFIG
nCE
DATA0
DCLK
Device Slave
Device Slave
Device Slave
Stratix IV
Stratix IV
Stratix IV
MSEL2
MSEL1
MSEL0
MSEL2
MSEL1
MSEL0
MSEL2
MSEL1
MSEL0
nCEO
nCEO
nCEO
April 2011 Altera Corporation
GND
GND
GND
N.C.
N.C.
N.C.
V
V
V
CCPGM
CCPGM
CCPGM