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參數(shù)資料
| 型號： | KS9245 |
| 廠商： | SAMSUNG SEMICONDUCTOR CO. LTD. |
| 英文描述： | Automated CD-ROM Controller(光盤驅(qū)動器控制器器) |
| 中文描述： | 自動CD - ROM控制器（光盤驅(qū)動器控制器器） |
| 文件頁數(shù)： | 3/102頁 |
| 文件大?。?/td> | 419K |
| 代理商： | KS9245 |
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SAMSUNG
Version: TM 2.4
KS9245 ATAPI Automated CD-ROM Controller
Preliminary Technical Manual
_____________________________________________________________
Do Not Copy or Release
1-3
- Supports serial DSP programming interface.
- CD-to-DSP data transfer rates up to 50X drive speed.
- Audio Playback in CAV Mode support.
Microcontroller Interface
- Supports high speed Intel
and Motorola
microcontrollers, such as 8051 & 68HC11.
- Supports multiplexed address and data buses.
- Supports separate host/buffer and disk interrupt signals.
- Four General Purpose I/O pins are provided.
- Interrupt or polled-microcontroller interface.
- Automatic power-down when idle; automatic power-up when command is received.
- Direct register access to facilitate low CPU utilization.
1.0.2 Description of Block Diagram
There are six key functional blocks integrated in the KS9245:
1) CD-ROM DSP Interface
2) Buffer Manager
3) Host Interface
4) Microcontroller Interface
5) ECC Data Corrector
6) EDC-CRC Checker.
The CD-ROM DSP Interface logic performs sync-mark detection and insertion for CD-ROM sector
synchronization. After descrambling and assembling data from the CD-DSP, the KS9245 sends the data
through the On-The-Fly-EDC
TM
EDC Data Checker before storing the data into buffer DRAM.
The On-The-Fly-EDC
TM
logic then verifies the CD-DSP incoming data stream. If an error is
encountered, the On-The-Fly-EDC
TM
logic invokes the ECC logic to correct the error. If no error is
encountered, the ECC logic remains idle.
The ECC Correction Code circuit performs CIRC Error Correction on each data block. The EDC-CRC
Checker then performs a cyclic redundancy check on the corrected data. All ECC correction, including
erasure pointer correction, are done in real-time without microcontroller. This reduces firmware overhead
and complexity, and minimizes microcontroller performance requirements.
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| KS9286 | 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:DIGITAL SIGNAL PROCESSOR for CDP |
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