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AR# 35866

Spartan-6 - Extended Performance Mode VCCINT Max Quiescent values

Description

The Extended Performance mode for the Spartan-6 Memory Controller Block (MCB) requires a higher nominal VCCINT voltage, as described in (Xilinx Answer 35818). This slight increase in voltage has an affect on quiescent current and power as related to that supply. This Answer Record describes those changes.

Solution


Extended Performance mode VCCINT and Power Consumption
When using the Extended Performance mode with the tighter VCCINT range forExtended MCB performance, the nominal voltage increases slightly from 1.20V to 1.23V. This increase also increases the quiescent current. The increase can be seen in the Xilinx Power Estimator (XPE) by increasing the VCCINT setting. The specifications in the Spartan-6 data sheet are for the standard VCCINT range. The table below shows the nominal values for 1.20V and 1.23V.

Device

ICCINTQ Typical

1.20V Standard Performance Nominal

1.23V Extended Performance Nominal

LX4, LX9

4mA

4mA

LX16

6mA

7mA

LX25/T

11mA

12mA

LX45/T

15mA

16mA

LX75/T

29mA

32mA

LX100/T

36mA

39mA

LX150/T

51mA

56mA


Linked Answer Records

Associated Answer Records

Answer Number Answer Title Version Found Version Resolved
35818 Design Advisory for Spartan-6 FPGA - Memory Controller Block (MCB) Performance Change for DDR2 Interfaces N/A N/A
AR# 35866
Date Created 06/11/2010
Last Updated 12/15/2012
Status Active
Type General Article
Devices
  • Spartan-6 LX
  • Spartan-6 LXT
IP
  • MIG