EP4CE40 datasheet(169/488 Pages) ALTERA

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Chapter 8: Configuration and Remote System Upgrades in Cyclone IV Devices

8–5

Configuration

May 2013

Altera Corporation

Cyclone IV Device Handbook,

Volume 1

Use the data in Table 8–2 to estimate the file size before design compilation. Different

configuration file formats, such as Hexadecimal (.hex) or Tabular Text File (.ttf)

formats, have different file sizes. However, for any specific version of the Quartus II

software, any design targeted for the same device has the same uncompressed

configuration file size. If you use compression, the file size varies after each

compilation, because the compression ratio depends on the design.

f For more information about setting device configuration options or creating

configuration files, refer to the Software Settings section in volume 2 of the

Configuration Handbook.

Configuration and JTAG Pin I/O Requirements

Cyclone IV devices are manufactured using the TSMC 60-nm low-k dielectric process.

Although Cyclone IV devices use TSMC 2.5-V transistor technology in the I/O

buffers, the devices are compatible and able to interface with 2.5, 3.0, and 3.3-V

configuration voltage standards by following specific requirements.

All I/O inputs must maintain a maximum AC voltage of 4.1 V. When using a serial

configuration device in an AS configuration scheme, you must connect a 25-

Ω series

resistor for the DATA[0] pin. When cascading the Cyclone IV device family in a

multi-device configuration for AS, AP, FPP, and PS configuration schemes, you must

connect the repeater buffers between the master and slave devices for the DATA and

DCLK

pins. When using the JTAG configuration scheme in a multi-device

configuration, connect 25-

Ω resistors on both ends of the TDO-TDI path if the TDO

output driver is a non-Cyclone IV device.

The output resistance of the repeater buffers and the TDO path for all cases must fit the

maximum overshoot equation shown in Equation 8–1.

Cyclone IV GX

EP4CGX15

3,805,568

EP4CGX22

7,600,040

EP4CGX30

7,600,040

22,010,888 (1)

EP4CGX50

22,010,888

EP4CGX75

22,010,888

EP4CGX110

39,425,016

EP4CGX150

39,425,016

Note to Table 8–2:

(1) Only for the F484 package.

Table 8–2. Uncompressed Raw Binary File (.rbf) Sizes for Cyclone IV Devices (Part 2 of 2)

Device

Data Size (bits)

Equation 8–1. (1)

Note to Equation 8–1:

(1) ZO is the transmission line impedance and RE is the equivalent resistance of the output buffer.

0.8ZO RE 1.8ZO

≤≤

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