m65818afp Renesas Electronics Corporation., m65818afp Datasheet - Page 23

• Manufacturer Part Number: m65818afp
• Description: Digital Amplifier Processor Of S-master* Technology
• Manufacturer: Renesas Electronics Corporation.

M65818AFP
(5)BFVdd, BFVss
5.18. Power sequences
System power-on sequencing
* Refer to following figure.
Rev.1.00, Sep.04.2003, page 23 of 38
These pins are Power supply and GND for input/output buffer (3.3V/5V ). In a case that BFVdd pin
is applied at 5.0V, input/output voltage level of 34-67pins becomes 5.0V signal level. In another case
that BFVdd pin is supplied at 3.3V, input/output pins (34-67 pins) becomes 3.3V signal level.
Power( Vddxxx,XVdd,
XOVdd, DVdd, BFVdd)
System power-on sequencing
( XfsoIN, XfsiIN)
*1 After a power supply and Master clock become to stable, INIT pin must be "L" over 5 msec.
*2 Data transfer is possible right after INIT release.
*3 Until SCLATCH is operated, a period over 2/fso ( fso=48kHz, over 42usec ) is necessary after INIT
release.
Master clock
SCLATCH
SCSHIFT
SCDT
INIT
Power OFF
X
X
X
X
X
Power ON
Over 5msec(*1)
* Refer to following figure.
Over 0sec(*2)
58 68
Over 2/fso(*3)