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STA016 数据表(PDF) 4 Page - STMicroelectronics |
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STA016 数据表(HTML) 4 Page - STMicroelectronics |
4 / 43 page STA016A 4/43 Figure 4. Layers performed by embedded DSP firmware The whole CDROM and file-system decoding task is performed by embedded firmware. The application MCU, basically, must manage CDDSP device according to STA016A requests. Three basic command flows exist: ■ MCU -> STA016A: commands used to handle decoder operation and to ask for specific information like filename, filelength, sector raw data, etc. This flow will use I2C (GPSO for special operations) interface. ■ STA016A -> MCU: this channel is used to retrieve inquired information and to inform MCU that a CDDSP specific operation must be performed (like pick-up repositioning). This flow is based on I2C link plus an additional interrupt signal in order to avoid time consuming polling techniques. ■ MCU -> CDDSP: the CDDSP management is fully up to the application MCU. This architecture allows maximum flexibility and easy migration from existing CDPlayers to MP3 CDPlayers. Figure 5. PIN CONNECTION FRAMES to SECTOR TRANSLATOR SYNC DETECTOR DESCRAMBLER EDC/ECC (C3) ISO9660 File System Decoding (with Joliet support) Browsing Command Interface 1 2 3 5 6 4 7 8 9 10 27 11 28 29 30 31 32 59 58 57 56 54 55 53 52 51 50 49 43 42 41 39 38 40 48 47 46 44 45 VSS_1 VDD_1 DREQ CD_BCK CD_LRCK CD_SDI VSS_2 VDD_2 BS_SDI BS_LRCK BS_BCK VSS_6 VCC_2 PLL_GND PLL_VCC FILT1 FILT0 IODATA12 IODATA11 IODATA10 IODATA8 IODATA9 D00AU1227 22 23 24 25 26 60 61 62 63 64 17 18 19 20 21 37 36 34 33 35 VSS_5 VDD_4 IODATA6 IODATA5 IODATA7 12 13 14 15 16 TESTEN RESET SDI LRCK1 BCKI |
类似零件编号 - STA016 |
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类似说明 - STA016 |
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