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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(yè)數(shù)： | 15/24頁(yè) |
| 文件大?。?/td> | 279K |
| 代理商： | L6000 |
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CIRCUIT OPERATION
General
The L6000 is a state of the art integrated read
channel.The major functionalblocks are :
1) Pulse Detector and Servo Demodulator, with
dual servo burst measurement channels and
2 different qualificationschemes for data.
2) Tunable Active equiripple filter with tunable
Pulse slimming Boost and Active Differentia-
tor.
3) (1, 7) RLL Combined Data Separator and
ENDEC with active window
margin shifting from externalcommands.
4) A (M+1) divide by (N+1) Frequency synthe-
sizer, using an external reference, and with 7
bitsof DAC control accuracy.
5) A high speed serial interface controllingmost
functionsand adjustement.
The L6000 is designed to be used with data rates
as high as 32 Mbits/sec. Selection of a different
recording density is done by setting new divisors
in the FrequencySynthesizervia serial registers.
centering and
Power Management
The serial interface should load all appropriate
control registers as soon as Power on Reset
clears in the system. This prevents spurious con-
ditions in all the affected blocks. After the regis-
ters are written, then the appropriate Power down
modes can be used. The power management of
the L6000 is under the control of the PWRDN
MODE pin and the Power Down Control Register
(R02). The following table defines the power
down modes and registerbits controllingthem:
Bit
0
1
2
3
4
5-7
Symbol
PD
SD
FLTR
DS
FS
Function
Pulse Detector Power Down
Servo Demodulator Power Down
Filter Power down
Data Separator Power Down
Frequency Synthesizer Power Down
Bits 5-7 are Hard-Coded to 111.
When the PWRDN MODE pin is assertedit pow-
ers down ALL functions with the exception of the
serial port, which remains active in ALL power
down modes. When the PWRDN MODE pin is
deasserted, each individual major function block
can be powered on or OFF separately from the
serial port PD register. This feature is useful for
sophisticated power saving state machines in
systems. Toggling the bit in the register is the
only necessary condition to turn on or OFF a ma-
jor block; PWRDN MODE does not have to be cy-
cledfor each separate register load.
Serial Interface
The serial interface consists of the 3 signals SE-
RIAL ENABLE, SERIAL CLOCK and SERIAL
DATA I/O. The first two signals are inputs which
are always powered on and active. SERIAL
DATA I/O is a bidirectional pin which becomes an
ouput on a register read. A value can be put into
the L6000 (register WRITE) or a value can be in-
terrogated from the L6000 (register READ). The
bottom half of the diagram is a register READ
where a value is interrogated from the L6000. To
do either operation, SERIAL DATA ENABLE is
MODE CONTROL
(continued)
PWRDN Mode
Register bits
DESCRIPTION
W
R
S
P
P
S
F
D
F
X
X
X
1
1
1
0
1
1
TEST FILTER MODE : All major blocks except the Active
Filter with Boost and Differentiator are powered down via
Register ( R02 ).
TEST DATA SEPARATOR READ MODE : Only the Data
Separator and Frequency Synthesizer are on, and thepin
READ DATA I/O is a test input.
TEST DATA SEPARATOR WRITE MODE : Only the Data
Separator Write circuitryand the Frequency Synthesizerare
on, for testing this specific circuitry.
TEST FREQUENCY SYNTHESIZER MODE: The front end is
powered down. The Frequency Synthesizer is powered on for
testing.
0
1
1
1
1
1
1
0
0
1
0
1
1
1
1
1
0
0
X
X
X
1
1
1
1
0
0
L6000
15/24
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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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