YSS950 Datasheet, PDF (23/30 Pages) YAMAHA CORPORATION – DAP1 Digital Audio Processor

YSS950



























Ê¢5Ê£
AC Characteristics
(a) System
Parameter
Symbol Conditions
Min.
Typ.
Max.
Unit
Power-on and power-off time
t_V3V1
[Note 1]
−1
1
s
XI clock frequency
f_XI
12.288
MHz
XI clock duty factor
Internal clock frequency
/RST time 1
/RST time 2
d_XI
40
f_CLK
t_RST1
At power-on
5
During
t_RST2
normal
1
operation
165.888
60
%
MHz
ms
µs
[Note 1] The power on/off interval between systems with 3.3 V power supplies and systems with 1.2 V power supplies
should be within one second. The LSI can be damaged if either type of power supply is left on while turning on
the other.
1) At power-on
VDD33
VDD12,
PAVDD,
PDVDD
XI
t_V3V1
t_RST1
/RST


• If a crystal oscillator is connected, this includes the time between power supply stabilization and oscillation
stabilization.
• Turn on the power when /RST = L.




2) During normal operation
t_RST2
/RST




• This condition is that both XI input and the power supply must be stabilized.
• If XI oscillation stops while initializing in the power-down mode, some time is needed to stabilize oscillation again.
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