Succeeded in read but failed in write from HOST(S3C2410) to DSP
through HPI in Nonmultiplexed Mode.
My connection is :
HCS<=3D!(!nGCS2&!ADD23)
HR/W<=3DADD22
HMOED<=3DVCC33
HCNTL0<=3DADD21
HDS1<=3DnRD
HDS2<=3DnWR
HBE0<=3DGND
HBE1<=3DGND
HRDY=3D>IOCHRDY
HINT=3D>nIRQ
HD[15..0]<=3D>DATA[15..0]
HA[19..0]<=3DADD[20..1]
RESET_MODE<=3DGND
SO BASE address of HPID read is=D6=D0=CE=AA0x10200000=A3=ACBASE address of =
HPID=20
write0x10600000.
When I read the data of the internal memory of DSP,for example ,the
address 0x10200200,it's the same with the data I have read through the
simulator.So it's all right.
However,when I write any data to the internal memory of DSP,for
example ,the address 0x10600200,it failed.The data of that address
stands still.
Amazingly,the data will become 0xFFFF,after I write any data to the=20
address TWICE OR MORE.
I don't know why .

Could you help me with this case?
Or can you give me a demonstration?
Thank you!

=20

Lingboly-
>
> Succeeded in read but failed in write from HOST(S3C2410) to DSP
> through HPI in Nonmultiplexed Mode.
> My connection is :
> HCS<=3D!(!nGCS2&!ADD23)
> HR/W<=3DADD22
> HMOED<=3DVCC33
> HCNTL0<=3DADD21
> HDS1<=3DnRD
> HDS2<=3DnWR
> HBE0<=3DGND
> HBE1<=3DGND
> HRDY=3D>IOCHRDY
> HINT=3D>nIRQ
> HD[15..0]<=3D>DATA[15..0]
> HA[19..0]<=3DADD[20..1]
> RESET_MODE<=3DGND
> SO BASE address of HPID read is=D6=D0=CE=AA0x10200000=A3=ACBASE address o=
f=20
HPID=20
> write0x10600000.
> When I read the data of the internal memory of DSP,for example ,the
> address 0x10200200,it's the same with the data I have read through=20
the
> simulator.So it's all right.
> However,when I write any data to the internal memory of DSP,for
> example ,the address 0x10600200,it failed.The data of that address
> stands still.
> Amazingly,the data will become 0xFFFF,after I write any data to=20
the=20
> address TWICE OR MORE.
> I don't know why .
>=20
> Could you help me with this case?
> Or can you give me a demonstration?
> Thank you!
>
Ling Bo Ly-

>> Succeeded in read but failed in write from HOST(S3C2410) to DSP
>> through HPI in Nonmultiplexed Mode.
>> My connection is :
>> HCS<=3D!(!nGCS2&!ADD23)
>> HR/W<=3DADD22
>> HMOED<=3DVCC33
>> HCNTL0<=3DADD21
>> HDS1<=3DnRD
>> HDS2<=3DnWR
>> HBE0<=3DGND
>> HBE1<=3DGND
>> HRDY=3D>IOCHRDY
>> HINT=3D>nIRQ
>> HD[15..0]<=3D>DATA[15..0]
>> HA[19..0]<=3DADD[20..1]
>> RESET_MODE<=3DGND
>> SO BASE address of HPID read is=D6=D0=CE=AA0x10200000=A3=ACBASE address =
of=20
HPID
>> write0x10600000.
>> When I read the data of the internal memory of DSP,for=20
example ,the
>> address 0x10200200,it's the same with the data I have read=20
through the
>> simulator.So it's all right.
>> However,when I write any data to the internal memory of DSP,for
>> example ,the address 0x10600200,it failed.The data of that address
>> stands still.
>>=20=20=20=20=20
May be I am wrong, but if you are trying to write to 'the address=20
0x10600200'  isn't the HR/W signal set to logic HIGH according to=20
your wiring?
HR/W=3D ADD22.
I presume this line should be a LOW while writing and HIGH while=20
reading.

Nithin

=20