* How to find I2C address?
@ 2006-09-12 14:13 Sachin Rane
2006-09-12 14:44 ` Ben Warren
0 siblings, 1 reply; 3+ messages in thread
From: Sachin Rane @ 2006-09-12 14:13 UTC (permalink / raw)
To: linuxppc-embedded; +Cc: Murali Sampath
[-- Attachment #1: Type: text/plain, Size: 261 bytes --]
Hi,
I am using AMCC PPC440GX evaluation board.
I want to access serial EEPROM (AP31_U29) present on the board.
I couldn't find the I2C address for this chip in the board manuals.
Could you tell me where I can find it?
Regards,
SAchin Rane
[-- Attachment #2: Type: text/html, Size: 977 bytes --]
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: How to find I2C address?
2006-09-12 14:13 How to find I2C address? Sachin Rane
@ 2006-09-12 14:44 ` Ben Warren
0 siblings, 0 replies; 3+ messages in thread
From: Ben Warren @ 2006-09-12 14:44 UTC (permalink / raw)
To: Sachin Rane; +Cc: Murali Sampath, linuxppc-embedded
On Tue, 2006-09-12 at 10:13 -0400, Sachin Rane wrote:
> Hi,
>
> I am using AMCC PPC440GX evaluation board.
> I want to access serial EEPROM (AP31_U29) present on the board.
> I couldn't find the I2C address for this chip in the board manuals.
>
> Could you tell me where I can find it?
>
These things typically have 1 to 3 address pins that are pulled up or
down on the board, with a base address of 0x50. In other words, it's
probably between 0x50 and 0x57. To be sure, download the datasheet from
the chip vendor, and look on your board's schematics to see how the
address pins are tied.
There are various ways of probing the bus to get the info indirectly,
but you should really be familiar with your hardware first.
regards,
Ben
^ permalink raw reply [flat|nested] 3+ messages in thread
* RE: How to find I2C address?
@ 2006-09-12 17:48 Howard, Marc
0 siblings, 0 replies; 3+ messages in thread
From: Howard, Marc @ 2006-09-12 17:48 UTC (permalink / raw)
To: Sachin Rane; +Cc: linuxppc-embedded
> On Tue, 2006-09-12 at 10:13 -0400, Sachin Rane wrote:
> Hi,
> =20
> I am using AMCC PPC440GX evaluation board.
> I want to access serial EEPROM (AP31_U29) present on the board.
> I couldn't find the I2C address for this chip in the board manuals.
> =20
> Could you tell me where I can find it?
> =20
You didn't look very hard. All of the I2C addresses are in Table 2-5 on
page 42 of the AMCC evaluation board users manual.
Marc Howard
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2006-09-12 17:48 UTC | newest]
Thread overview: 3+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2006-09-12 14:13 How to find I2C address? Sachin Rane
2006-09-12 14:44 ` Ben Warren
-- strict thread matches above, loose matches on Subject: below --
2006-09-12 17:48 Howard, Marc
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox