1–10

Chapter 1: Cyclone IV FPGA Device Family Overview

Cyclone IV Device Family Architecture

Cyclone IV Device Handbook,

November 2011

Altera Corporation

Volume 1

chapter.

Configuration

Cyclone IV devices use SRAM cells to store configuration data. Configuration data is

downloaded to the Cyclone IV device each time the device powers up. Low-cost

configuration options include the Altera EPCS family serial flash devices and

commodity parallel flash configuration options. These options provide the flexibility

for general-purpose applications and the ability to meet specific configuration and

wake-up time requirements of the applications.

Table 1–9 lists which configuration schemes are supported by Cyclone IV devices.

IEEE 1149.6 (AC JTAG) is supported on all transceiver I/O pins. All other pins

support IEEE 1149.1 (JTAG) for boundary scan testing.

chapter.

For Cyclone IV GX devices to meet the PCIe 100 ms wake-up time requirement, you

must use passive serial (PS) configuration mode for the EP4CGX15/22/30 devices

and use fast passive parallel (FPP) configuration mode for the EP4CGX30F484 and

EP4CGX50/75/110/150 devices.

Cyclone IV Devices chapter.

The cyclical redundancy check (CRC) error detection feature during user mode is

supported in all Cyclone IV GX devices. For Cyclone IV E devices, this feature is only

supported for the devices with the core voltage of 1.2 V.

Cyclone IV Devices chapter.

High-Speed Transceivers (Cyclone IV GX Devices Only)

Cyclone IV GX devices contain up to eight full duplex high-speed transceivers that

can operate independently. These blocks support multiple industry-standard

communication protocols, as well as Basic mode, which you can use to implement

your own proprietary protocols. Each transceiver channel has its own pre-emphasis

and equalization circuitry, which you can set at compile time to optimize signal

integrity and reduce bit error rates. Transceiver blocks also support dynamic

reconfiguration, allowing you to change data rates and protocols on-the-fly.

Table 1–9. Configuration Schemes for Cyclone IV Device Family

Devices

Supported Configuration Scheme

Cyclone IV GX

AS, PS, JTAG, and FPP (1)

Cyclone IV E

AS, AP, PS, FPP, and JTAG

Note to Table 1–9:

(1) The FPP configuration scheme is only supported by the EP4CGX30F484 and EP4CGX50/75/110/150 devices.