BU94501AMUV Datasheet, PDF (14/73 Pages) Rohm – AAC/WMA/MP3 +SD Memory Card + iPod

BU9450xAxxx series
Datasheet
●Application Information
1. Clock and Reset
Clock
Clock name I/O
Function
XIN_PLL I X'tal (16.9344MHz) connection input terminal -
XOUT_PLL O X'tal (16.9344MHz) connection terminal
-
Remarks
Reset
Signal name I/O
Function
RESETX I System reset input terminal -
Remarks
Please release the reset signal continue L input for more than 100 us after clock input from the oscillation I/O terminal
becomes stable. (See Figure 6.)
Power
s u p p ly
XIN _PLL
RESETX
W aiting tim e for
oscillation stabilization
fc lk
tR STX
Figure 6. Reset Timing
Item
Code
min
Rating
typ
Unit
Remarks
max
Clock frequency f_CLK
Reset L interval t_RSTX
16.9302
100
16.9344
-
16.9386
-
MHz -
us -
2. USB I/F
USB I/O interface
Signal name I/O
Function
Remarks
USB_DP I/O USB D+ I/O terminal
-
USB_DM I/O USB D- I/O terminal
-
REXTI O USB bias resistor connection terminal Connect a resistor of 12 kΩ±1% to GND.
This interface communicates with the USB device using USB_DP and USB_DM differential signals.
REXTI terminal is used to connect to the bias resistor in the USB-PHY block.
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TSZ22111・15・001
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TSZ02201-0V2V0E600070-1-2
2012.12.10 Rev.003