Re: Summarise the points needed for AHB Slave Interface Implementation

Hi Anupam,
Please read the inlime comments.
anupam.jain21@xxxxxxxxx wrote:
hi,

I have to implement a AHB slave interface which supports SPLIT.
This is what i have done :
1) When the Hsel =LOW or Hreadyin =LOW . Do nothing.Respond with
Hresp=OK and Hreadyout=HIGH.
ok.
2) When the Hsel=HIGH and Hreadyin=HIGH . If Htrans = NSEQ or SEQ ,If
Hwrite =HIGH ,write what is present on the data line at the address
given by Haddr and read in case of Hwrite= LOW.
ok.
3) When Hsel=HIGH,Hreadyin=HIGH and Htrans =IDLE or BUSY. Do nothing
.respnd with Hresp =OK and Hreadyout=HIGH.
ok.
3)If Hsize is other than 32 bit transfer,respond with the Hresp=ERROR
and Hreadyout=HIGH.
Giving Error Responsce is fine. But you have to take care for the
Hreadyout signal. When ever error response is given , hreadyout should
remail low for the one clock cycle and high for once clock cycle for
the ERROR response.
Please refer the "Topic 3.9.3 "two-cycle response " " for the more
detials and the reason behind this.
4)To split,respond with Hresp=SPLIT and record the master number.
5)To release the SPLIT, assert the appropriate line on HSPLIT.
ok.
This is all i have done and i think i have missed some points.Can
anyone help me point out some of those?

done !

Regards,
Tarang Popat.

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