IDT72T6480 Integrated Device Technology, IDT72T6480 Datasheet - Page 2

• Manufacturer Part Number: IDT72T6480
• Description: X48 Sequential Flow-control Device Up To 1gigabit
• Manufacturer: Integrated Device Technology

Features ......................................................................................................................................................................................................................... 1
Description ...................................................................................................................................................................................................................... 4
Pin Configuration ............................................................................................................................................................................................................. 6
Pin Descriptions .......................................................................................................................................................................................................... 7-10
Detailed Descriptions ..................................................................................................................................................................................................... 11
Functional Descriptions .................................................................................................................................................................................................. 22
Signal Descriptions ........................................................................................................................................................................................................ 23
Device Characteristics ................................................................................................................................................................................................... 27
AC Test Conditions ........................................................................................................................................................................................................ 29
AC Electrical Characteristics ........................................................................................................................................................................................... 30
JTAG Timing Specifications ............................................................................................................................................................................................ 45
Depth Expansion Configuration ..................................................................................................................................................................................... 49
Width Expansion Configuration ...................................................................................................................................................................................... 50
Ordering Information ...................................................................................................................................................................................................... 51
Table 1 – DDR SDRAM Minimum Specifications ............................................................................................................................................................. 11
Table 2 – Supported Memory Vendors .......................................................................................................................................................................... 11
Table 3 – Total Possible External Memory Configurations ............................................................................................................................................... 12
Table 4 – SFC to DDR SDRAM interface Connections ................................................................................................................................................... 14
Table 5 – Total useable memory based on various configurations ................................................................................................................................... 18
Table 6 – IDT72T6480 Maximum Frequency Based on 166MHz DDR SDRAM ............................................................................................................ 19
Table 7 – IDT72T6480 Maximum Frequency Based on 133MHz DDR SDRAM ............................................................................................................ 19
Table 8 – MIC[2:0] Configurations .................................................................................................................................................................................. 20
Table 9 – Memory Configurations Settings ..................................................................................................................................................................... 21
Table 10 – Device configuration ..................................................................................................................................................................................... 22
Table 11– Default Programmable Flag Offsets ................................................................................................................................................................. 22
Table 12– Number of Bits Required for Offset Registers .................................................................................................................................................. 22
Table 13 – Bus-Matchings ............................................................................................................................................................................................. 24
Table 14 – MTYPE[1:0] Configurations .......................................................................................................................................................................... 25
Table 15 – Parameters affected by I/O selection ............................................................................................................................................................. 25
IDT72T6480 2.5V, SEQUENTIAL FLOW-CONTROL DEVICE
x12, x24, x48 BIT WIDE CONFIGURATION
- Read Port Interface ........................................................................................................................................................................................... 7
- Write Port Interface ............................................................................................................................................................................................ 7
- Memory Interface .............................................................................................................................................................................................. 8
- Control and Feature Interface ............................................................................................................................................................................ 8
- Power and Ground Signals ............................................................................................................................................................................. 10
- Pin Number Location Table .............................................................................................................................................................................. 10
Table of Contents
List of Tables
2
COMMERCIAL AND INDUSTRIAL
TEMPERATURE RANGES
OCTOBER 10, 2005