BU8332CKV-M Datasheet, PDF (19/29 Pages) Rohm – Directional Microphone Function

BU8332CKV-M
Timing Chart
Turn on AVDD and DVDDIO simultaneously and then turn on DVDD1 or DVDD2. Please note that DVDD1 can be supplied
by internal voltage regulator. Please set REGON pin =”H” to use internal regulator.
It is necessary to input clock on MCLK, before reset (RSTB) is released.
Initial values of register are automatically downloaded from EEPROM and register is updated, after reset (RSTB) release.
This processing is skipped when EEPROM is not connected.
Then, using via 2-wire host interface, please carry out required register setup.
2-wire host interface is compatible with I²C bus specification, but is not 5V tolerant.
AVDD/DVDDIO
90%
REGON
DVDD1
40ms
90%
MCLK
RSTB
EEPROM Download Enable
(internal signal)
> 5ms
30ms
2-wire Access
(internal signal)
Not Available
Available
PLL ON
(internal signal)
PLL Condition
(internal signal)
Not Stable
15ms
Stable
DSP Reset Release
(internal signal)
www.rohm.co.jp
© 2014 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
Figure 32 Timing Chart
19/26
TSZ02201-0V1V0C104570-1-2
2014.10.31 Rev.002