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參數(shù)資料
| 型號(hào)： | L6000 |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | SINGLE CHIP READ & WRITE CHANNEL |
| 中文描述： | 單芯片讀 |
| 文件頁數(shù)： | 14/24頁 |
| 文件大?。?/td> | 279K |
| 代理商： | L6000 |
MODE CONTROL
PWRDN Mode
Register bits
DESCRIPTION
W
R
S
P
P
S
F
D
F
X
X
X
O
X
X
X
X
X
FULL POWER DOWN MODE : Only the serial interface
remains operational. Switching from this mode to either
Servo, Read or Idle modes initiates certain Read Channel
states. Switchingdirect to Write modes is an illegal sequence.
See Circuit Opertion.
READ MODE : The entire FRONT END is turned on, the
READ DATA I/O pin isinactive, and the AGC amplifier is
active, with unshorted inputs ( low-impedance mode off ) and
in tracking mode. The HOLD DATA AGC input is enabled.
The Data Separator section initiates its Address Mark search
on the assertion of READ GATE. It then starts its phase lock
up sequence after Address Mark detection occurs. After
3
3T following the Address Mark Detection the DS PLL
is switched from Fout/2 to DRD and the look-in sequence is
initiated. After 19
3T RRC switche from Fout/3 to DATA
SYNCHRONIZER Vco/3and NRZOUT isenabled. After.
Read mode is maintained until the deassertion of READ
GATE.
WRITE MODE : The FRONT END is inactive. The assertion
of WRITE GATE causes the pin WRT DATA NRZ IN to
become an active input, and the pins READ NRZ OUTPUT
and ADDR MARK DET are floated. The inputs ofboth the
Active filter and AGC amplifier are shorted (i.e. the low-
impedance state entered ). The PLL is locked to the
Frequency Synthesizer divided by 30. n WRITE GATE
assertion, two address marks ( each 7 0’s, 1, 70’s, 1, 11 0’s,
1, 11 0’s ) are generated and than the preamble of three 3T
groups. WRT DATA NRZ IN must be zero until these patterns
have been output from WRITE DATA. Write Mode is ended
when Write Gate is deasserted. This starts the AGC Amplifier
fast attack/decay currents acquisition, as well as unshorting
the filter and AGC Amplifier inputs.
IDLE MODE : Allthe front end circuitry is active and operating.
The Data Separator VCO is phase locked to Fout. The READ
REF CLOCK outputs is theFrequency Synthesizer divided by
3. The pin READ NRZ OUTPUT is floated, ADDR MARK DET
is high, READ DATA I/O is an active output of the pulses
detected and HOLD DATA AGC is enabled. The inputs to the
AGC Amplifier and filter are unshorted.
SERVO MODE 1 : The Pulse Detector and Servo
Demodulator circuitry is operating, and the HOLD DATA AGC
input is disabled. The Data Separator is on and it is phase
locked to the Frequency Sinthesizer which is also on. The pin
READ DATA I/O is an active output.
SERVO MODE 2 : This mode has both the Frequency
Synthesizer and Data Separator major blocks powered down,
otherwise it is the same as SERVO MODE 1 . This mode is
intended to reduce power dissipation when the systhem is
just track following. Since only the Pulse Detector and Active
Filter are poweredon, this is also known as FRONT END
TEST MODE.
0
1
1
1
0
0
0
0
0
1
0
1
1
0
0
0
0
0
0
0
1
1
0
0
0
0
0
0
X
0
1
0
0
0
0
0
0
X
0
1
0
0
0
1
1
L6000
14/24
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PDF描述 |
|---|---|
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| L601-L603 | DARLINGTON ARRAYS |
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| L603C | DARLINGTON ARRAYS |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| L60000 | 制造商:LAUREL ELECTRONICS 功能描述:Laureate 1/8 DIN serial input meter / remote display, universal 85-264 Vac power |
| L60000FR | 制造商:LAUREL ELECTRONICS 功能描述:MULTIFUNCTION COUNTER 制造商:LAUREL ELECTRONICS 功能描述:MULTIFUNCTION COUNTER; No. of Digits / Alpha:6; Digit Height:14.2mm; Panel Cutout Height:45mm; Panel Cutout Width:92mm; Operating Temperature Min:0C; Operating Temperature Max:60C; Character Size:0.56"; Display Font Color:Red ;RoHS Compliant: Yes |
| L60001FR | 制造商:LAUREL ELECTRONICS 功能描述:Laureate 1/8 DIN multi-function counter / timer, universal 85-264 Vac power, no relays, no analog output, RS232 communications, dual pulse inputs for frequency, rate, rotal, or timing. ;RoHS Compliant: Yes |
| L60002 | 制造商:Honeywell Sensing and Control 功能描述: 制造商:SKAN-A-MATIC 功能描述: 制造商:LAUREL ELECTRONICS 功能描述:Laureate 1/8 DIN serial input meter / remote display, universal 85-264 Vac power |
| L60002VF1 | 制造商:LAUREL ELECTRONICS 功能描述:Laureate 1/8 DIN multi-function counter / timer, universal 85-264 Vac power, no |
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