datasheetbank_Logo
Integrated circuits, Transistor, Semiconductors Search and Datasheet PDF Download Site

LC78681KE-L View Datasheet(PDF) - SANYO -> Panasonic

Part Name
Description
View to exact match
LC78681KE-L Datasheet PDF : 24 Pages
First Prev 21 22 23 24
LC78681KE, 78681KE-L
Differences between the LC78681E and the LC78681KE/LC78681KE-L
1. New functions
CLV phase comparator divisor function (divisors of 2, 4, and 8)
CLV three state output
JP three state output
2. New commands
Command input
MSB
LSB
11101111
11101110
Command
COMMAND INPUT NOISE EXCLUSION MODE
RESET NOISE EXCLUSION MODE
(former product scheme)
RES = low
Function
Excludes noise from the CQCK signal.
CLV servo
MSB
LSB
10110001
10110010
10110011
10110000
10110100
10110101
Command
CLV PHASE COMPARATOR DIVISOR: 1/2
CLV PHASE COMPARATOR DIVISOR: 1/4
CLV PHASE COMPARATOR DIVISOR: 1/8
NO CLV PHASE COMPARATOR DIVISOR USED
(former product scheme)
CLV THREE STATE OUTPUT MODE
RESET THREE STATE OUTPUT MODE
(former product scheme)
RES = low
Function
The former product compared the phase for
each 7.35 kHz cycle. A new frequency
divisor function has been added.
CLV servo can be controlled from a single
pin since a three state output function has
been added to the CLV+ pin (and to the
CLVpin as well).
Track jump
MSB
LSB
10110110
10110111
01010010
01011010
00100001
00100000
Command
JP THREE STATE OUTPUT
RESET THREE STATE OUTPUT MODE
(former product scheme)
1 TRACK JUMP IN #4
1 TRACK JUMP OUT #4
THLD PERIOD TOFF OUTPUT MODE
RESET THLD PERIOD TOFF OUTPUT MODE
(former product scheme)
RES = low
Function
The track jump function can be controlled
from a single pin since a three state output
function has been added to the JP+ pin (and
to the JPpin as well).
TOFF is set low during the track jump c
period.
TOFF is set high during the track jump THLD
period.
Internal brake mode
MSB
LSB
11001011
11001010
11001101
11001100
Command
INTERNAL BRAKE CONTINUOUS MODE
RESET CONTINUOUS MODE
(former product scheme)
TOFF OUTPUT DISABLED MODE
RESET TOFF OUTPUT DISABLED MODE
(former product scheme)
RES = low
Function
The LC78681KE remains in continuous brake
operation mode even after WRQ goes high.
TOFF goes low during internal brake
operation.
3. Changed specification
The cperiods (braking periods) during track jump operations have all been changed from 24 ms to 60 ms.
No. 4969-23/24
 

Share Link: 

datasheetbank.com [ Privacy Policy ] [ Request Datasheet ] [ Contact Us ]