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STA016 数据表(PDF) 28 Page - STMicroelectronics |
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STA016 数据表(HTML) 28 Page - STMicroelectronics |
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28 / 43 page ![]() STA016A 28/43 6.9.19 CD_TRACK_FORMAT : Address : 0xAA (170) Type : RO - AEC Software Reset : 0 Description : This register specifies the format of the played track considering the extension name. Only 1 bit can be set in the same time Table 28. : 6.9.20 NB_OF_SUBDIR : Address : 0xAB (171) Type : RO - AEC Software Reset : 0 Description : This register specifies the number of sub-directory in the current directory. 6.9.21 NB_OF_SUB_TRACK : Address : 0xAC (172) Type : RO - AEC Software Reset : 0 Description : This register specifies the number of file in the current directory. 6.9.22 DIRECTORY_LEVEL : Address : 0xAD (173) Type : RO - AEC Software Reset : 0 Description : This register specifies the current directory level. 6.9.23 DIR_IDENTIFIER_Bn : Address : 0xAE (174) to 0xB1 (177) Type : RO - AEC Software Reset : 0 Description : This register specifies the nth byte of the number of byte of the current directory. Considering that two di- rectories have very few chance to have exactly the same number of byte, this number allows to identify the directory. The first byte (174) is the MSB and the last one (177) is the LSB. 6.9.24 VOL_IDENTIFIER_Bn: Address : 0xB2 (178) to 0xB5 (181) Type : RO - AEC Software Reset : 0 Description : This register specifies the nth byte of the number of byte of the CD. Considering that two CD have very few chance to have exactly the same number of byte, this number allows to identify the CD. The first byte (178) is the MSB and the last one (181) is the LSB. b7 b6 b5 b4 b3 b2 b1 b0 Bit FORMAT 0 0 : UNKNOWN 1 : MP3 1 1: RESERVED 2MPEG1 3MPEG2 4MPG b7 b6 b5 b4 b3 b2 b1 b0 b7 b6 b5 b4 b3 b2 b1 b0 b7 b6 b5 b4 b3 b2 b1 b0 b7 b6 b5 b4 b3 b2 b1 b0 |
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