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Hi ALL:)
  I have problem in booting the c672x device through I2C and SPI both in SLAVE`
n MASTER mode.And, I would like to known about the TMS320C672X DSP`S I2C SPI
BOOT timing infomation.For example,the I2C MASTER mode useing a 
START-SLA&write-ACK-8bitADDR-ACK-8bitADDR-ACK-Sr - SLA&read-ACK-8bit
DATA-ACK-8bitDATA-NACK-stop sequence.
and what about the others? Mainly I`d like to know what timeing sequence the
IIC&SPI slave boot use.
   The second question is,when I try to load AIS to the dsp in i2c master
mode,the DSP bootloader reads the magic word 0x41504954,then it just stoped and
doesn`t send anything to the bus.The stauts code in address 0x10000708 is
0x00000000 ,that means there is no data error.BUT the address 0x0000 070c shows
a code change from 0x00000000 to 0x00000001,when write this addr with a 0 in
ccs,reset the DSP from emulator,it will changed to 0x00000001,I wonder if the
ONchip bootloader contains error codes or not,if so,is there any way to fix it?

   By the way,I have already write a IIC MASTER read program on the DSP which
use the same time sequence as what the bootloader does.And it exactlly read the
right data defined with 0x41504954.
   My circuit is:: IIC Master DSP-C6720  
                   IIC SLAVE  MCU-8051 (useing a software program to    
                                        simulate the I2C PROTOCOL)
                   IIC SLAVE  ROM-AT24C512
         Both fails Either boot from the MCU or the I2C ROM.
   The IDE is CCS3.1 

   Thank you so much.

(You need to be a member of c6x -- send a blank email to c6x-subscribe@yahoogroups.com )

Does anyone can help me?
在2008-12-15，l...@163.com 写道：
Hi ALL:)
I have problem in booting the c672x device through I2C and SPI both in SLAVE` n
MASTER mode.And, I would like to known about the TMS320C672X DSP`S I2C SPI BOOT
timing infomation.For example,the I2C MASTER mode useing a 
START-SLA&write-ACK-8bitADDR-ACK-8bitADDR-ACK-Sr - SLA&read-ACK-8bit
DATA-ACK-8bitDATA-NACK-stop sequence.
and what about the others? Mainly I`d like to know what timeing sequence the
IIC&SPI slave boot use.
The second question is,when I try to load AIS to the dsp in i2c master mode,the
DSP bootloader reads the magic word 0x41504954,then it just stoped and doesn`t
send anything to the bus.The stauts code in address 0x10000708 is 0x00000000
,that means there is no data error.BUT the address 0x0000 070c shows a code
change from 0x00000000 to 0x00000001,when write this addr with a 0 in ccs,reset
the DSP from emulator,it will changed to 0x00000001,I wonder if the ONchip
bootloader contains error codes or not,if so,is there any way to fix it? 
By the way,I have already write a IIC MASTER read program on the DSP which use
the same time sequence as what the bootloader does.And it exactlly read the
right data defined with 0x41504954.
My circuit is:: IIC Master DSP-C6720 
IIC SLAVE MCU-8051 (useing a software program to 
simulate the I2C PROTOCOL)
IIC SLAVE ROM-AT24C512
Both fails Either boot from the MCU or the I2C ROM.
The IDE is CCS3.1 

Thank you so much.

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(You need to be a member of c6x -- send a blank email to c6x-subscribe@yahoogroups.com )