EP3SL150F1152C3N Altera, EP3SL150F1152C3N Datasheet - Page 279

• Manufacturer Part Number: EP3SL150F1152C3N
• Description: IC STRATX III FPGA 150K 1152FBGA
• Manufacturer: Altera
• Series: Stratix® IIIr

Specifications of EP3SL150F1152C3N

• Number Of Logic Elements/cells: 142500
• Number Of Labs/clbs: 5700
• Total Ram Bits: 6390
• Number Of I /o: 744
• Voltage - Supply: 0.86 V ~ 1.15 V
• Mounting Type: Surface Mount
• Operating Temperature: 0°C ~ 85°C
• Package / Case: 1152-FBGA
• For Use With: 544-2568 - KIT DEVELOPMENT STRATIX III
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Number Of Gates: -
• Other names: 544-2408; EP3SL150F1152C3NES

Chapter 8: External Memory Interfaces in Stratix III Devices
Stratix III External Memory Interface Features
Figure 8–15. Avoiding a Glitch on a Non-Consecutive Read Burst Waveform
Leveling Circuitry
© March 2010 Altera Corporation
Postamble Enable
dqsenable
DQS
Using the HDR block as the first stage capture register in the postamble enable
circuitry block is optional. The HDR block is clocked by the half-rate
resynchronization clock, which is the output of the I/O clock divider circuit (shown in
Figure 8–20 on page
that is used to avoid postamble glitches from a previous read burst on a
non-consecutive read burst. This scheme allows a half-a-clock cycle latency for
dqsenable assertion and zero latency for dqsenable deassertion, as shown in
Figure
DDR3 SDRAM unbuffered modules use a fly-by clock distribution topology for better
signal integrity. This means that the CK/CK# signals arrive at each DDR3 SDRAM
device in the module at different times. The difference in arrival time between the first
DDR3 SDRAM device and the last device on the module can be as long as 1.6 ns.
Figure 8–16
8–15.
shows the clock topology in DDR3 SDRAM unbuffered modules.
8–35). There is an AND gate after the postamble register outputs
Postamble
Stratix III Device Handbook, Volume 1
Postamble glitch
Preamble
Delayed by
1/2T logic
8–31