1.8-VLVTTL datasheet(22/34 Pages) ALTERA

Part #	1.8-VLVTTL

Description	This chapterdescribes the electric characteristics, switching characteristics,and I/O timing for Cyclone III devices. A glossary is also included for your reference

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Chapter 1: Cyclone III Device Datasheet

Switching Characteristics

Cyclone III Device Handbook

July 2012

Altera Corporation

Volume 2

External Memory Interface Specifications

Cyclone III devices support external memory interfaces up to 200 MHz. The external

memory interfaces for Cyclone III devices are auto-calibrating and easy to implement.

f For more information about external memory system performance specifications,

board design guidelines, timing analysis, simulation, and debugging information,

refer to Literature: External Memory Interfaces.

Output jitter

(peak to peak)

—

500

—

500

—

550

ps

tLOCK (2)

—

1—1—1

ms

Notes to Table 1–30:

(1) Emulated LVDS transmitter is supported at the output pin of all I/O banks.

(2) tLOCK is the time required for the PLL to lock from the end of device configuration.

Table 1–31. Cyclone III Devices LVDS Receiver Timing Specifications (1)

Symbol

Modes

C6

C7, I7

C8, A7

Unit

Min

Max

Min

Max

Min

Max

fHSCLK (input

clock frequency)

×10

5

437.5

5

370

5

320

MHz

×8

5

437.5

5

370

5

320

MHz

×7

5

437.5

5

370

5

320

MHz

×4

5

437.5

5

370

5

320

MHz

×2

5

437.5

5

370

5

320

MHz

×1

5

437.5

5

402.5

5

402.5

MHz

HSIODR

×10

100

875

100

740

100

640

Mbps

×8

80

875

80

740

80

640

Mbps

×7

70

875

70

740

70

640

Mbps

×4

40

875

40

740

40

640

Mbps

×2

20

875

20

740

20

640

Mbps

×1

10

437.5

10

402.5

10

402.5

Mbps

SW

—

400

—

400

—

400

ps

Input jitter

tolerance

—

500

—

500

—

550

ps

tLOCK (2)

—

—1—1—

1

ms

Notes to Table 1–31:

(1) LVDS receiver is supported at all banks.

(2) tLOCK is the time required for the PLL to lock from the end of device configuration.

Table 1–30. Cyclone III Devices Emulated LVDS Transmitter Timing Specifications (1) (Part 2 of 2)

Symbol

Modes

C6

C7, I7

C8, A7

Unit

Min

Max

Min

Max

Min

Max

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