參數(shù)資料
型號(hào)： CXD2586R-1
廠(chǎng)商： Sony Corporation
元件分類(lèi)： 數(shù)字信號(hào)處理
英文描述： CD Digital Signal Processor with Built-in Digital Servo and DAC
中文描述： CD數(shù)字信號(hào)處理器，具有內(nèi)置數(shù)字伺服和DAC
文件頁(yè)數(shù)： 94/127頁(yè)
文件大?。?/td> 1694K
代理商： CXD2586R-1
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– 94 –
CXD2586R/-1
§5-8. TRK (Tracking) and SLD (Sled) Servo Control
TRK and SLD servo is controlled by the 8-bit command $2X. (See Table 5-9.)
When the upper 4 bits of the serial command are 2 (Hex), TZC is output from the SENS pin.
0 0
0 1
1 0
1 1
0 0
0 1
1 0
1 1
TRACKING SERVO OFF
TRACKING SERVO ON
FORWARD TRACK JUMP
REVERSE TRACK JUMP
SLED SERVO OFF
SLED SERVO ON
FORWARD SLED MOVE
REVERSE SLED MOVE
0 0 1 0
TRACKING
MODE
2
Table 5-9.
TRK Servo
The TRK JUMP (track jump) height can be set with the 6 bits D13 to D8 of $36.
In addition, when the TRK servo is on and D17 of $1 is set to 1, the TRK servo filter assumes gain-up status.
The TRK servo filter also assumes gain-up status when vibration detection is performed with the LOCK signal
low and the anti-shock circuit (described hereafter) enabled.
The gain-up filter used when TRK has assumed gain-up status has two types of structures which can be
selected by setting D16 of $1. (See Table 5-17.)
SLD Servo
The SLD MOV (sled move) output, composed of a basic value from the 6 bits D13 to D8 of $37, is determined
by multiplying this value by
×
1,
×
2,
×
3, or
×
4 magnification set using D17 and D16 when D19 = D18 = 0 is
set with $3. (See Table 5-10.)
SLD MOV must be performed continuously for 50 μs or more. In addition, if the LOCK input signal goes low
when the SLD servo is on, the SLD servo turns off.
Note)
When the LOCK signal is low, the TRK servo is set gain-up status and the SLD servo is turned off, by
the default. This is disabled by setting D6 (LKSW) of $38 to 1.
0 0 0 0
0 0 0 1
0 0 1 0
0 0 1 1
SLED KICK LEVEL (basic value
×
±1)
SLED KICK LEVEL (basic value
×
±2)
SLED KICK LEVEL (basic value
×
±3)
SLED KICK LEVEL (basic value
×
±4)
0 0 1 1
SELECT
3
Table 5-10.
: Don’t care
Register
name
Command
D23 to D20
D19 to D16
Register
name
Command
D23 to D20
D19 to D16
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CXD2587 制造商:SONY 制造商全稱(chēng):Sony Corporation 功能描述:CD Digital Signal Processor with Built-in Digital Servo and DAC
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