
BU2280FV, BU2360FV, BU2362FV
Technical Note
16/23
www.rohm.com
2012.02 - Rev.B
2012 ROHM Co., Ltd. All rights reserved.
1/8
XTAL
OSC
XTALIN=27.0000MHz
PLL1
1/6
1/4
PLL2
1/6
1/8
8:XTALIN
9:XTALOUT
3:CLK27M1
4:CLK27M2
24:CLK27M3
12:CLK33M
20:CLK384FS
22:CLK768FS
21:OE
23:CTRLFS
(27.0000MHz)
(33.8688MHz)
(CTRLFS=OPEN:18.4320MHz
CTRLFS=L
:16.9344MHz)
(CTRLFS=OPEN:36.8640MHz
CTRLFS=L
:33.8688MHz)
15:CLK512FS2
(CTRLFS=OPEN:24.5760MHz
CTRLFS=L
:22.5792MHz)
16:CLK512FS1
(CTRLFS=OPEN:24.5760MHz
CTRLFS=L
:22.5792MHz)
(FSEL=OPEN:48.0kHz type
FSEL=L
:44.1kHz type)
●Block diagram, Pin assignment
◎BU2280FV
CTRLFS
CLK384FS
CLK512FS
CLK768FS
L
16.9344MHz
22.5792MHz
33.8688MHz
OPEN
18.4320MHz
24.5760MHz
36.8640MHz
Fig.118
1:VDD1
24:CLK27M3
2:VSS1
23:CTRLFS
3:CLK27M1
22:CLK768FS
4:CLK27M2
21:OE
5:AVDD
20:CLK384FS
6:AVDD
19:DVDD
7:AVSS
18:DVSS
8:XTALIN
17:DVSS
9:XTALOUT
16:CLK512FS1
10:VSS2
15:CLK512FS2
11:VDD2
14:VDD2
12:CLK33M
13:VSS2
BU2280FV
Fig.119
BU2280FV