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AR# 21018

7.1i Virtex-4 MAP - Post-MAP simulation problem affecting DSP48s

Description

Urgency: Hot  

 

General Description: 

A problem has been found with the post-MAP simulation of DSP48s when the C0 pin is either connected to GND or disconnected.  

 

Case 1: C0 connected to GND  

- Regardless of the state of the rest of the C bus pins, the CEC, RSTC and entire C bus is disconnected. [We expect the CEC, RSTC and C bus to be disconnected only if the *entire* C bus is connected to GND.]  

 

Case 2: C0 is disconnected  

- Regardless of the state of the rest of the C bus pins, the CEC and RSTC pins are disconnected. [We expect the CEC and RSTC pins to be disconnected only if the *entire* C bus is disconnected.]

Solution

This problem has been fixed in the latest 7.1i Service Pack available at: 

http://support.xilinx.com/xlnx/xil_sw_updates_home.jsp
The first service pack containing the fix is 7.1i Service Pack 2. 

 

Meanwhile, a tactical patch is available. 

 

Windows: 

http://www.xilinx.com/txpatches/pub/swhelp/ise7_updates/71isp1_map_win_21018.zip
To install, unzip in the XILINX install directory while maintaining directory structure. 

 

Linux: 

http://www.xilinx.com/txpatches/pub/swhelp/ise7_updates/71isp1_map_lin_21018.tar.gz
To install: 

cd $XILINX  

tar zxvf 71isp1_par_lin_21018.tar.gz 

 

Solaris: 

http://www.xilinx.com/txpatches/pub/swhelp/ise7_updates/71isp1_map_sol_21018.tar.gz
To install: 

cd $XILINX  

gzip -d 71isp1_par_sol_21018.tar.gz 

tar xvf 71isp1_par_sol_21018.tar

AR# 21018
Date Created 09/04/2007
Last Updated 05/19/2014
Status Archive
Type General Article