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參數(shù)資料
| 型號： | CXA1782CR |
| 廠商： | Sony Corporation |
| 英文描述： | RF Signal Processing Servo Amplifier for CD players(用于CD播放器的伺服放大器(可處理射頻信號)) |
| 中文描述： | 射頻信號處理伺服放大器（用于光盤播放器的伺服放大器的CD播放器（可處理射頻信號）） |
| 文件頁數(shù)： | 22/31頁 |
| 文件大?。?/td> | 535K |
| 代理商： | CXA1782CR |
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– 22 –
CXA1782CQ/CR
Commands
The input data to operate this IC is configured as 8-bit data; however, below, this input data is represented by
2-digit hexadecimal numerals in the form $XX, where X is a hexadecimal numeral between 0 and F.
Commands for the CXA1782 can be broadly divided into four groups ranging in value from $0X to $3X.
1. $0X
(“FZC” at SENS pin (Pin 24))
These commands are related to focus servo control.
The bit configuration is as shown below.
D7
0
D6
0
D5
0
D4
0
D3
FS4
D2
D1
FS2
D0
FS1
DEFECT
Four focus-servo related switches exist: FS1, FS2, FS4, and DEFECT corresponding to D0 to D3, respectively.
$00
When FS1 = 0, Pin 8 is charged to (22μA – 11μA)
×
50k
= 0.55V.
If, in addition, FS2 = 0, this voltage is no longer transferred, and the output at Pin 6 becomes 0V.
From the state described above, the only FS2 becomes 1. When this occurs, a negative signal is output
to Pin 6. This voltage level is obtained by equation 1 below.
$02
(22μA – 11μA)
×
50k
×
. . . .
Equation 1
$03
From the state described above, FS1 becomes 1, and a current source of +22μA is split off.
Then, a CR charge/discharge circuit is formed, and the voltage at Pin 8 decreases with the time as
shown in Fig. 1 below.
This time constant is obtained with the 50k
resistance and an external capacitor.
By alternating the commands between $02 and $03, the focus search voltage can be constructed. (Fig. 2)
$04
When the fact that the RF signal is missing is detected and the scratches on the disc are detected with
DEFECT = 0, DFCT (FS3) is turned ON.
0V
0V
$
00 02
03
02
03
02
00
Fig. 1. Voltage at Pin 8 when FS1 gose from 0
→
1
Fig. 2. Constructing the search voltage by alternating between $02 and $03. (Voltage at Pin 6)
resistance between Pins 6 and 7
50k
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| CXA1816-0000-000N00M40E8 | 功能描述:大功率LED - 白色 Warm White, 2700K 1682lm, 450mA, 80CRI RoHS:否 制造商:Cree, Inc. 照明顏色:Warm White 顏色溫度:2700 K 光通量:1682 lm 顯示角:115 deg 正向電流:450 mA 正向電壓:37 V 安裝風(fēng)格:SMD/SMT 系列:CXA1816 封裝:Tray |
| CXA1816-0000-000N00M427F | 功能描述:大功率LED - 白色 Warm White, 2700K 1682lm, 450mA, 80CRI RoHS:否 制造商:Cree, Inc. 照明顏色:Warm White 顏色溫度:2700 K 光通量:1682 lm 顯示角:115 deg 正向電流:450 mA 正向電壓:37 V 安裝風(fēng)格:SMD/SMT 系列:CXA1816 封裝:Tray |
| CXA1816-0000-000N00M427H | 功能描述:大功率LED - 白色 Warm White, 2700K 1682lm, 450mA, 80CRI RoHS:否 制造商:Cree, Inc. 照明顏色:Warm White 顏色溫度:2700 K 光通量:1682 lm 顯示角:115 deg 正向電流:450 mA 正向電壓:37 V 安裝風(fēng)格:SMD/SMT 系列:CXA1816 封裝:Tray |
| CXA1816-0000-000N00N20E6 | 功能描述:大功率LED - 白色 Warm White, 3500K 1762lm, 450mA, 80CRI RoHS:否 制造商:Cree, Inc. 照明顏色:Warm White 顏色溫度:3500 K 光通量:1762 lm 顯示角:115 deg 正向電流:450 mA 正向電壓:37 V 安裝風(fēng)格:SMD/SMT 系列:CXA1816 封裝:Tray |
| CXA1816-0000-000N00N20E7 | 制造商:Cree 功能描述:LED Uni-Color White 2-Pin SMD Tray 制造商:Cree 功能描述:LED, HB, WHITE, 1590LM, Series:XLamp CXA1816, LED Color:White, CCT:3000K, Luminous Flux @ Test:1590lm, Forward Current @ Test:450mA, Forward Current If Max:900mA, Forward Voltage @ Test:37V, Viewing Angle:115, Opto Case Style:- , RoHS Compliant: Yes 制造商:Cree 功能描述:XLamp CXA Light Emitting Diode White |
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