sta015t STMicroelectronics, sta015t Datasheet - Page 40

• Manufacturer Part Number: sta015t
• Description: Mpeg 2.5 Layer Iii Audio Decoder With Adpcm Capability
• Manufacturer: STMicroelectronics

STA015-STA015B-STA015T
5.6. STA015 CONFIGURATION FILE FORMAT
The STA015 Configuration File is an ASCII format. An example of the file format is the following:
58
42
128 15
............
It is a sequence of rows and each one can be interpreted as an I
The first part of the row is the I
To download the STA015 configuration file into the device, a sequence of write operation to STA015 I
interface must be performed.
The following program describes the I
STA015 Configuration Code (pseudo code)
download cfg - file
Note:1
STA015 is a device based on an integrated DSP core. Some of the I2C registers default values are loaded after an internal DSP boot operation.
The bootstrap time is 60 micro second. Only after this time lenght, the data in the register can be considered stable.
Note 2:
Refer also to the application note AN1250
40/44
{
do {
fopen (cfg_file);
fp:=1;
1
4
while (!EDF)
}
I
I
I
I
I
fp++;
}
2
2
2
2
2
C_start_cond;
C_write_dev_addr;
C_write_subaddress(fp); /* write subaddress
C_write_data (fp);
C_stop_cond;
2
C address (register) and the second one is the I
42
/*set file pointer to first row */
/* generate I
/* update pointer to new file row
/* generate I
/* write STA015 device address
/* repeat until End of File
/* End routine
/* write data
2
C routine to be implemented for the configuration driver:
4
D98AU976
2
2
C stop condition
C start condition for STA015 device address */
I
I
2
2
C REGISTER VALUE
C SUB-ADDRESS
2
C command.
2
C data (value).
*/
*/
*/
*/
*/
*/
*/
2
C