Configuration and Remote System Upgrades in Cyclone IV ... - Altera

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8–2 Chapter 8: Configuration and Remote System Upgrades in Cyclone IV Devices Configuration ■ “FPP Configuration” on page 8–40 ■ “JTAG Configuration” on page 8–45 ■ “Device Configuration Pins” on page 8–62 Configuration Features Table 8–1 lists the configuration methods you can use in each configuration scheme. Table 8–1. Configuration Features in Cyclone IV Devices Configuration Scheme Configuration Method Decompression Remote System Upgrade (1) AS Serial Configuration Device v v AP Supported Flash Memory (2) — v PS External Host with Flash Memory v v (3) Download Cable v — FPP External Host with Flash Memory — v (3) JTAG based configuration Notes to Table 8–1: External Host with Flash Memory — — Download Cable — — (1) Remote update mode is supported when you use the Remote System Upgrade feature. You can enable or disable remote update mode with an option setting in the Quartus ® II software. (2) For more information about the supported device families for the Micron commodity parallel flash, refer to Table 8–9 on page 8–22. (3) Remote update mode is supported externally using the Parallel Flash Loader (PFL) with the Quartus II software. Configuration Data Decompression Cyclone IV devices support configuration data decompression, which saves configuration memory space and time. This feature allows you to store compressed configuration data in configuration devices or other memory and send the compressed bitstream to Cyclone IV devices. During configuration, Cyclone IV devices decompress the bitstream in real time and program the SRAM cells. 1 Compression may reduce the configuration bitstream size by 35 to 55%. When you enable compression, the Quartus II software generates configuration files with compressed configuration data. This compressed file reduces the storage requirements in the configuration device or flash memory and decreases the time required to send the bitstream to the Cyclone IV device. The time required by a Cyclone IV device to decompress a configuration file is less than the time required to send the configuration data to the device. There are two methods for enabling compression for the Cyclone IV device bitstreams in the Quartus II software: ■ Before design compilation (through the Compiler Settings menu) ■ After design compilation (through the Convert Programming Files dialog box) To enable compression in the compiler settings of the project in the Quartus II software, perform the following steps: 1. On the Assignments menu, click Device. The Settings dialog box appears. 2. Click Device and Pin Options. The Device and Pin Options dialog box appears. Cyclone IV Device Handbook, February 2013 Altera Corporation Volume 1
Chapter 8: Configuration and Remote System Upgrades in Cyclone IV Devices 8–3 Configuration 3. Click the Configuration tab. 4. Turn on Generate compressed bitstreams. 5. Click OK. 6. In the Settings dialog box, click OK. You can enable compression when creating programming files from the Convert Programming Files dialog box. To enable compression, perform the following steps: 1. On the File menu, click Convert Programming Files. 2. Under Output programming file, select your desired file type from the Programming file type list. 3. If you select Programmer Object File (.pof), you must specify the configuration device in the Configuration device list. 4. Under Input files to convert, select SOF Data. 5. Click Add File to browse to the Cyclone IV device SRAM object files (.sof). 6. In the Convert Programming Files dialog box, select the .pof you added to SOF Data and click Properties. 7. In the SOF File Properties dialog box, turn on the Compression option. When multiple Cyclone IV devices are cascaded, you can selectively enable the compression feature for each device in the chain. Figure 8–1 shows a chain of two Cyclone IV devices. The first device has compression enabled and receives compressed bitstream from the configuration device. The second device has the compression feature disabled and receives uncompressed data. You can generate programming files for this setup in the Convert Programming Files dialog box. Figure 8–1. Compressed and Uncompressed Configuration Data in the Same Configuration File GND Decompression Controller Configuration Requirement Cyclone IV Device nCE nCEO This section describes Cyclone IV device configuration requirement and includes the following topics: ■ “Power-On Reset (POR) Circuit” on page 8–4 ■ “Configuration File Size” on page 8–4 ■ “Power Up” on page 8–6 Serial Data Compressed Uncompressed V CC 10 kΩ Serial Configuration Device nCE Cyclone IV Device nCEO Not Connected (N.C.) February 2013 Altera Corporation Cyclone IV Device Handbook, Volume 1
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Configuration and Remote System Upgrades in Cyclone IV ... - Altera

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