參數(shù)資料
型號(hào)： CL-CS3712-33QC-A
廠商： CIRRUS LOGIC INC
元件分類： 光電元器件
英文描述： Integrated AVI/ATAPI DVD Drive Manager
中文描述： CD MOTOR DRIVER, PQFP208
封裝： 28 X 28 MM, 1.40 MM HEIGHT, MS-026BJB, LQFP-208
文件頁(yè)數(shù)： 10/26頁(yè)
文件大?。?/td> 728K
代理商： CL-CS3712-33QC-A
Functional Decriptions
DS588PP1 -
rev
0.4 April 11, 2002
Copyright
2002 Cirrus Logic Inc.
C
ONFIDENTIAL
P
RELIMINARY
D
RAFT
www.cirrus.com
6
The channel is controlled by a state machine that automatically starts timing recovery and
deals with defects. This ensures quick recovery from defects and fast data acquisition
after seeks.
The CL-CS3712 contains a versatile digital block that can be used to monitor the ongoing
‘health’ or ‘quality’ of the channel, and that enables accurate equalization calibration to
compensate for wide variations in disc resolution.
Servo Channel
The CL-CS3712 contains an integrated servo system that can control either a CDROM or
a DVD mechanism, with the following features:
Servo Control Processor (SCP), implementing algorithms designed specifically
for optical disc drives
Supports dual pick up for CD and DVD applications
Integrated RF amplifier with Laser Diode Automatic Power Control (LD APC)
Track counter with velocity estimation
Multi-function register banks
External microcontroller interface circuitry
Programmable Sample Rate Subsystem
Figure 2
shows the CL-CS3712 in a complete servo system. Four control loops can be
processed by this chip: focus, track, sled, spindle. Since the CL-CS3712 contains a
processor, control algorithms and interface circuitry, little external hardware and little
microcontroller intervention is required to implement the servo system.
Pickup/Sensor Interface
The Pickup Interface is the input to the servo control processor (SCP). This circuitry
provides the analog and digital processing needed before the SCP can process the
control signals from the sensors. Since laser diode automatic power control and
reference voltage generation are also provided, the CL-CS3712 can be connected
directly to the pick up electronics without the need for an external RF amplifier.
Servo Control Processor
The SCP does all the processing necessary to control all four servo loops with little
loading of the external microcontroller. The microcontroller sends setup information and
commands to the control system through the microcontroller interface. It can also monitor
key metrics and change control variables to optimize system performance.
All parameter variables and SCP instructions are stored in internal RAM. Since the CL-
CS3712 is a RAM based device, the microcontroller must first initialize these RAMs
before servo operations can begin.
Servo DACs
Control outputs for the sled, focus, and track loops are converted to analog through an
array of three 11-bit DACs. The spindle loop has a pulse width modulated (PWM) output.
相關(guān)PDF資料
PDF描述
CL-CS3712 Integrated AVI/ATAPI DVD Drive Manager
CL-GD5446 64-bit VisualMedia Accelerator
CL-GD5446-3HC-A 64-bit VisualMedia Accelerator
CL-GD5446-3QC-A 64-bit VisualMedia Accelerator
CL-GD5462 64-Bit Graphics Engine with Integrated 3D Game Acceleration(CL-GD5464)
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
CLCUSB30IMP10X 制造商:Exar Corporation 功能描述:IC USB SWITCH 2X2 10MSOP
CLCUSB42ILP10X 功能描述:電源開關(guān) IC - USB USB2 ANALOG SWITCH 480MSPS 50mA 4.6V RoHS:否 制造商:Micrel 電源電壓-最小:2.7 V 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:SOIC-8 封裝:Tube
CLD 制造商:SENSORTECHNICS 制造商全稱:Sensortechnics GmbH 功能描述:Continuous Level Detection Sensors
CLD141 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Silicon Planar photodiodes
CLD141R 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Silicon Planar photodiodes
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*