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LC78625 Arkusz danych(PDF) 34 Page - Sanyo Semicon Device

Numer części LC78625
Szczegółowy opis  Compact Disc Player DSP
Download  35 Pages
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Producent  SANYO [Sanyo Semicon Device]
Strona internetowa  https://www.sanyo-av.com/us/
Logo SANYO - Sanyo Semicon Device

LC78625 Arkusz danych(HTML) 34 Page - Sanyo Semicon Device

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Differences between the LC78625E and the LC78620E
No. 5502-34/35
LC78625E
LC78625E
LC78620E
Item
Content of change
Bilingual processing for antishock input data is now possible in
antishock mode. The same bilingual control commands as those used in
the LC78620E are used.
(Command code)
(Command mode)
$28:
Stereo output (Initial state after a reset)
$29:
Both left and right are output to the left channel
$2A:
Both left and right are output to the right channel
Bilingual function
A bilingual processing function is not
provided for antishock input data in antishock
mode.
The de-emphasis filters are turned on or off by the input level on the
ASDEPC/P2 pin in antishock mode.
(ASDEPC/P2)
(De-emphasis filter)
High level applied: On
Low level applied:
Off
De-emphasis function
The on/off state of the de-emphasis filter
cannot be controlled from an external pin.
A command was added that allows the presence or absence of a
braking period (the C period) to be selected during two-track jumps
(new track jump mode only).
(Command code)
(C period)
$F6:
None (Initial state after a reset)
$F7:
Present (60 ms)
Track jump function
There is no C period during two-track jumps
(in new track jump mode).
The frequency range was increased over that supported by the
LC78620E. (The range is identical to that of the LC78622E)
This resulted in a change in the value of the resistor used on the FR pin:
1.2 k
Ω.
VCO circuit
A 5.1 k
Ω resistor is connected to the FR pin.
Addition of a supplementary command for low-voltage operation.
$AC: PLL DIVIDER OFF (Low-voltage operation supplementary
command)
$AD: PLL DIVIDER ON (Initial state after a reset)
PLL circuit
No such commands are supported.
When antishock mode is not used, the antishock input pins can be used
as general-purpose I/O pins. To support this functionality, the pin names
were changed and commands were added. (These command codes are
identical to those on the LC78622E.)
· Pin name changes:
(LC78625E)
(LC78620E)
ASDACK/P0
ASDACK
ASDFIN/P1
ASDFIN
ASDEPC/P2
ASDFIR
ADLRCK/P3
ASLRCK
· Added commands:
$DB0X: I/O switching command (2 bytes)
$DC0Y: Port output data setup command (2 bytes)
$DD: Port input command (1 byte)
Here X and Y represent 4-bit data items that control P0, P1, P2, and P3
in order starting with the low order bit.
X: A zero specifies input and a one specifies output.
(These pins default to input after a reset.)
Y: A zero specifies a low-level output, and a one specifies a high-level
output.
General-purpose ports added
There are no general-purpose ports.


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