BU94501AMUV Datasheet, PDF (8/73 Pages) Rohm – AAC/WMA/MP3 +SD Memory Card + iPod

BU9450xAxxx series
Datasheet
●Description of Terminals -part2
BU94501AKS2 / BU94502AKS2
No
Pin Name
IO Cir IO
PU Function
1 DVSSIO
－
－
－
GND terminal
2 DVDDIO
－
－
－
IO power (VDD1) terminal
3 TEST1
－
I
－
Test mode terminal. Connect it to GND.
4 XIN_PLL
E
I
－
X'tal (16.9344MHz) connection input terminal.
5 XOUT_PLL
E
O
－
X'tal (16.9344MHz) connection output terminal.
6 N.C.
－
－
－
Non Connection
7 N.C.
－
－
－
Non Connection
8 TEST2
H
I
PU Pull it up at VDD1 power.
9 TEST3
H
I
PU Pull it up at VDD1 power.
10 TEST4
H
I PU *1*3 Test mode terminal. Connect it to GND.
11 AVDDC
－
－
－
USB Power supply (VDD1) terminal
12 AVSSC
－
－
－
USB GND terminal
13 N.C.
－
－
－
Non Connection
14 USB_DM
C
I/O
－
USB D－I/O terminal
15 USB_DP
C
I/O
－
USB D+ I/O terminal
16 REXTI
D
O
USB bias resistor (12kΩ) connecting terminal
－
Arrange the resistance of 12kΩ near PIN, and wiring on the PIN
side doesn't to cross with other signal lines.
17 CLK24MI
B
I
PU*3 24MHz clock input terminal at SRC through mode
18 LRCK/SPDIF
B
O
－
Digital Audio channel clock or SPDIF output terminal
19 N.C.
－
－
－
Non Connection
20 BCK
B
O
－
Digital Audio bit clock output terminal
21 DATA
B
O
－
Digital Audio data output terminal
22 MCLK
B
O
－
Audio Master clock (12.288MHz/16.9344MHz) output terminal
23 N.C.
－
－
－
Non Connection
24 N.C.
－
－
－
Non Connection
25 DVDDIO
－
－
－
IO Power supply (VDD1) terminal
26 AMUTE
G
O
－
Audio Mute output terminal (H：MUTE OFF, L：MUTE ON)
27 DAVSS
－
－
－
Audio DAC GND terminal
28 RDACO
F
O
－
Audio DAC Rch Line output terminal
29 VCDACO
J
O
－
Audio DAC Reference voltage output terminal
30 LDACO
F
O
－
Audio DAC Lch Line output terminal
31 DAVDD
B
－
－
Audio DAC Power supply (VDD1) terminal
32 N.C.
－
－
－
Non Connection
33 N.C.
－
－
－
Non Connection
34 SD_CON
B
I
PU*3 SD card Connect terminal
35 SD_DO
B
I
－
SD card Data In terminal
36 SD_CLK
B
O
－
SD card Clock terminal
37 SD_DI
B
O
－
SD card Data Out terminal
38 SD_CS
B
O
－
SD card Chip select terminal
39 N.C.
－
－
－
Non Connection
40 DVSSIO
－
－
－
GND terminal
41 N.C.
－
－
－
Non Connection
42 N.C.
－
－
－
Non Connection
43 RESETX
A
I
PU*3 H: Release RESET, L: RESET
44 TMODE
H
I
－
Test mode terminal. Connect it to GND.
45 IRPTO
B
O
－
Connection interrupt output terminal
46 N.C.
－
－
－
Non Connection
47 SEARCH
B
O
－
Search flag output terminal
48 MCHNG
B
O
－
File play end flag output terminal
49 BUSY
50 SCL
51 SDA
B
O
I
I
I
I/O
－
Command analysis BUSY output terminal
*2
I²C slave clock input terminal
*2
I²C slave data I/O terminal
52 DVDD_M
－
－
－
CORE power (VDD2) monitor terminal
Connect it to bypass capacitor.
*1 Pull-Up turns OFF when L is input.
*2 An external pull-up resistor is required because of Open Drain IO
*3 please input L level directly without resistance when you input L to the terminal with Pull-Up (about 33 kΩ)
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TSZ02201-0V2V0E600070-1-2
2012.12.10 Rev.003