Damn, I wish our h/w designers had told us about these aic23 (who he?) on the board - to think of all those weeks and months we wasted developing DSP software to drive the modem codec through McBSP1 when there was a far easier solution sitting there on the board unused. It must be a VERY small chip though as it's managing to hide in both the schematics and a visual observation of the actual board!
Cliff
-----Original Message-----
I'm talking about the aic23 stero codec which the E3 seems to have 2 of ?! You don't need the DSP either as the BSP that sends the sound samples (via I2S) can be mapped to either the DSP or the CPU.
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--- Cliff Lawson clawson@amstrad.com wrote:
Damn, I wish our h/w designers had told us about these aic23 (who he?) on the board - to think of all those weeks and months we wasted developing DSP software to drive the modem codec through McBSP1 when there was a far easier solution sitting there on the board unused. It must be a VERY small chip though as it's managing to hide in both the schematics and a visual observation of the actual board!
I'm just reporting what the I2C adapter told me, it's not my fault it's broken ;). Being serious, I'm surprised that it reported that the got an ack from the address of the aic23 code chip if there isnt one there, are there any I2C devices on the E3? If there was no device at the address I would expect either a nack which would mean that the aic23 codec driver would fail it's attach, or the bus operation would time out (if there was no pull-ups on the I2C bus).
Also please correct me if I'm wrong, I'm new to OMAP's, but isn't the DSP public peripheral bus available to the MPU via the MPUI and both MsBSP1 & 3 are on the DSP public peripheral bus so you don't need the DSP to use them.
Mark
Cliff
-----Original Message-----
I'm talking about the aic23 stero codec which the E3 seems to have 2 of ?! You don't need the DSP either as the BSP that sends the sound samples (via I2S) can be mapped to either the DSP or the CPU.
This e-mail and any attachments are confidential and intended exclusively for the addressee. If you are not the intended recipient please delete it from your system and notify the sender immediately. This message is attributed to the sender and may not necessarily reflect the views of Amstrad Plc or its subsidiaries.
For further information on Amstrad Plc please visit our website: www.amstrad.com
Amstrad Plc. Brentwood House 169 Kings Road Brentwood Essex CM14 4EF Registered in England : No. 955321
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Cliff Lawson -
Mark Underwood