LV1100 Datasheet, PDF (6/10 Pages) Sanyo Semicon Device – Digital Surround Audio Signal-Processing IC

LV1100
Delay Time Data (D6 to D8)
D6
D7
D8
CLK FAST
CLK SLOW
L
L
L
10 ms
20 ms
L
L
H
20 ms
40 ms
L
H
L
30 ms
60 ms
L
H
H
40 ms
80 ms
H
L
L
50 ms
100 ms
H
L
H
60 ms
120 ms
Note: D6, D7, and D8 must not be used for any purposes other than the above commands.
L
D9
SYSTEM MUTE ON
D10
CLK FAST
Control Data Format
H
SYSTEM MUTE OFF
CLK SLOW
• Data is read in on the rising edge of the clock.
• The control data consists of 12 bits.
• The input data is latched on the rising edge of the enable signal.
• The clock and enable signals must be held high when not being used to control the LV1100.
• Command interval time
The timing of intervals between enable signals must meet the conditions shown in the figure.
Notes on Mode Control (System Mute Usage)
1 When power is first applied, after the IC is fully operating (about 2 seconds after power is applied) applications must
send commands that turn the system muting off and then on again.
2 Applications must perform system muting on/off operations when switching the delay time or clock fast/slow
settings. After sending a system muting on command along with the new data, send the new data again, this time with
a system muting off command.
Note: By performing the operations described in items 1 and 2 here, the memory contents are initialized, thus preventing incorrect operation.
No. 5506-6/10