APB read - do I need to consider penable

[niraj_m]

Hi
For APB read transaction ,
if read operation , do I need to consider penable =1 to output the data on bus ?

Thnx
niraj

 

[shitansh]

Re: APB read

Yes, you need to consider penable.

Regards,
Shitansh Vaghela

 

[barkha]

As per APB protocol , In the case of a read, the slave must provide the data during the ENABLE
cycle. The data is sampled on the rising edge of clock at the end of the ENABLE cycle.

AMBA specification link - **broken link removed**

 

[shitansh]

As per APB protocol , In the case of a read, the slave must provide the data during the ENABLE
cycle. The data is sampled on the rising edge of clock at the end of the ENABLE cycle.

AMBA specification link - **broken link removed**

Thats true but read enable and penable should be active during address phase as well as data phase try to read spec care fully.

 

[ljxpjpjljx]

hi niraj_m, penable is useful for APB protocol , so you should use it!