STA016A Просмотр технического описания (PDF) - STMicroelectronics
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STA016A Datasheet PDF : 43 Pages
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STA016A
Figure 4. Layers performed by embedded DSP firmware
FRAMES to SECTOR TRANSLATOR
SYNC DETECTOR
DESCRAMBLER
EDC/ECC (C3)
ISO9660 File System Decoding
(with Joliet support)
Browsing Command Interface
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
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CD_LRCK
CD_BCK
CD_SDI
DREQ
VDD_1
VSS_1
BS_LRCK
BS_BCK
BS_SDI
VDD_2
VSS_2
LRCK1
BCKI
SDI
RESET
TESTEN
64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49
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48
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46
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44
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43
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IODATA12
IODATA11
IODATA10
IODATA9
IODATA8
VSS_6
VCC_2
PLL_GND
FILT0
PLL_VCC
FILT1
VSS_5
VDD_4
IODATA7
IODATA6
IODATA5
D00AU1227
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