ROHM BU7331EKN

3ch Programmable Clock Generator
Generate
3 application clocks
BU7331EKN
No.09004EAT01
●Description
The BU7331EKN integrates a 3ch PLL.The frequency of each PLL can be set via serial interface control, making it
compatible with a wide range of digital applications.
In addition, sudden frequency changes are handled via rewriting through the register, and BU7331EKN is suitable for sets
with different frequencies, resulting in more efficient parts management and shorter development time.
●Features
1) To generate clocks by connecting reference 5.0MHz ～ 48.0MHz.
2) 5.0MHz～75.0MHz output frequency range.
3) All settings and operation controlled via 2-wire serial interface
4) Individual level shifter attached to each output
5) HQFN20V package
●Application
General digital product of mobile phone, DSC, DVD-player etc.
●Absolute Maximum ratings (Ta=25℃)
Parameter
Supply voltage (Core)
Supply voltage (I/O)
Input Voltage
Storage Temperature range
Power dissipation
*1
*
*
Symbol
VDD_CORE
VDD_IO
VIN
Tstg
PD
Limits
-0.2 ~ 2.2
-0.2 ~ 4.0
-0.2 ~ VDD+0.2
-55 ~ 125
599.8 *1
Unit
V
V
V
℃
mW
Limits
1.65 ~ 1.80 ~ 1.95
1.40 ~ 3.60
1.40 ~ 3.60 *1
0.8VDD ~ VDD
0.0 ~ 0.2VDD
-20 ~ 75
5.0 ~ 27.0
5.0 ~ 48.0
10 (MAX)
15 (MAX)
15 (MAX)
Unit
V
V
V
V
V
℃
MHz
MHz
pF
pF
pF
A measure value at mounting on 70 x 70 x 1.6mm glass epoxy substrate.
In the case of exceeding Ta=25℃, 6.0mW should be reduced per 1℃.
The radiation-resistance design is not carried out.
Operation is not guaranteed.
●Operating Conditions
Parameter
Supply voltage (Core)
Supply voltage (VDD_CLK)
Supply voltage (VDD_SIF)
Input ”H” Voltage
Input ”L” Voltage
Operating Temperature
Input frequency ( xtal use ) *2
Input frequency ( Not xtal use ) *3
5~48MHz Output Load1 (VDD_CLK=1.40~1.65V)
5~48MHz Output Load 2 (VDD_CLK=1.65~3.60V)
5~75MHz Output Load (VDD_CLK=2.70~3.60V)
*1
*2
*3
Symbol
VDD_CORE
VDD_CLK
VDD_SIF
VIH
VIL
topr
Ref_xtal
Ref_clk
CL1
CL2
CL3
When setting it as VDD_SIF=1.40V～1.45V, standby current may flow by VDD_CORE=1.90V～1.95V.
Use by VDD_CORE=1.80V is recommended.
Need a resister for bias between 6PIN and 7PIN.
The input amplitude level range is 0.6Vp-p ～ VDD_COREp-p.
Refer to application note about input form details.
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© 2009 ROHM Co., Ltd. All rights reserved.
1/20
2009.04 - Rev.A
Technical Note
BU7331EKN
●Electrical Characteristics
(Unless otherwise specified, VDD_CORE=1.8V, VDD_CLK=VDD_SIF=3.3V, Ta=25℃ , at no output loads.)
Limit
Parameter
Symbol
Unit
Conditions
Min.
Min.
Min.
Input H current
IupH
0.0
3.0
µA
VIH=3.3V
Input L current
IupL
-3.0
0.0
µA
VIL=0.0V
Output H voltage1
VOH1
3.1
3.2
V
IOH=4.5mA (VDD_CLK=3.3V)
Output L voltage1
VOL1
0.1
0.2
V
IOL=4.0mA (VDD_CLK=3.3V)
Output H voltage2
VOH2
1.2
1.3
V
IOH=2.5mA (VDD_CLK=1.4V)
Output L voltage2
VOL2
0.1
0.2
V
IOL=2.5mA (VDD_CLK=1.4V)
Operating circuit current
IDD1
7.5
10.0
mA
3ch PLL “ON” mode
(CORE)
VDD_CLK=1.40~1.65V
5.000000
48.000000 MHz
Output Load=10pF (MAX)
VDD_CLK=1.65~3.60V
Output frequency
CLK
5.000000
48.000000 MHz
Output Load =15pF (MAX)
VDD_CLK=2.70~3.60V
5.000000
75.000000 MHz
Output Load =15pF (MAX)
* The circuit current at I/O is depending on output frequency, output load and the voltage of VDD_CLK.
●Block diagram
RST
SCL
SDA
⑳
⑲
VDD_SIF
⑱
VSS_SIF
⑰
CLK1
⑯
①
⑮ VDD_CLK1
Serial I/F Control Register
VDD_CORE1
②
VDD_CORE2
③
VSS_CORE1
④
PLL Analog1
Analog2
⑭ VSS_CLK1
⑬ CLK2
PLL Analog1
Analog2
⑫ VDD_CLK2
PLL Analog1
Analog2
VSS_CORE2
⑪ VSS_CLK2
⑤
⑥
⑦
XIN
XOUT
⑧
⑨
VDD_CLK3 VSS_CLK3
⑩
CLK3
Fig.1 BU7331EKN Block diagram
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© 2009 ROHM Co., Ltd. All rights reserved.
2/20
2009.04 - Rev.A
Technical Note
BU7331EKN
●Package Outline, Appearance of Marker
U7331E
LOT No.
(Unit:mm)
Fig.2 Package Outline, Appearance of Marker
●Pin Function
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
PIN NAME
RST
VDD_CORE1
VDD_CORE2
VSS_CORE1
VSS_CORE2
XIN
XOUT
VDD_CLK3
VSS_CLK3
CLK3
VSS_CLK2
VDD_CLK2
CLK2
VSS_CLK1
VDD_CLK1
CLK1
VSS_SIF
VDD_SIF
SDA
SCL
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© 2009 ROHM Co., Ltd. All rights reserved.
Function
Reset
Power Supply for core
Power Supply for core
GND for core
GND for core
Crystal input terminal
Crystal output terminal
Power Supply for CLK3
GND for CLK3
CLK3 output terminal
GND for CLK2
Power Supply for CLK2
CLK2 output terminal
GND for CLK1
Power Supply for CLK1
CLK1 output terminal
GND for Serial IF
Power Supply for Serial IF
Serial Data Line
Serial Clock Line
3/20
2009.04 - Rev.A
Technical Note
BU7331EKN
●Typical Application Circuit
SCL
3.3V～1.4V
SDA
0.1uF
CLK1：Output
⑳
⑲
⑱
⑰
⑯
3.3V～1.4V
RST
①
1.8V±0.15V
PLL
～uH
L
⑮
Serial I/F Control Register
②
PLL
③
0.1uF
Analog1
Analog2
Analog3
⑭
CLK2：Output
Analog1
Analog2
Analog3
⑬
0.1uF
PLL
④
3.3V～1.4V
Analog1
Analog2
Analog3
⑫
0.1uF
⑤
⑪
⑦
⑥
1MΩ
⑧
⑨
⑩
CLK3：Output
0.1uF
3.3V～1.4V
Input Frequency : 5 ～ 48MHz ( 5 ～ 27MHz at Xtal Use )
0.6Vp-p ～ VDD_COREp-p
Notes)
・Basically, mount the BU7331EKN on the board and use it.
(Unless it is mounted on the board, it may not demonstrate the full characteristics.)
・Mount a 0.1-µF capacitor in the vicinity of BU7331EKN PIN between PIN 2 - 3 (VDD_CORE) and PIN 4 - 5 (VSS_CORE),
PIN 8 (VDD_CLK3) and PIN 9 (VSS_CLK3), PIN 11 (VSS_CLK2) and PIN 12 (VDD_CLK2), PIN 14 (VSS_CLK1) and PIN
15 (VDD_CLK1), and PIN 17 (VSS_SIF) and PIN 18 (VDD_SIF), respectively.
・Depending on the conditions of the board, mount an additional electrolytic capacitor between the power supply and GND.
・For EMI protection, it is effective to put ferrite beads in the origin of power to be supplied to the BU7331EKN from the
board or to insert a capacitor (of not more than 1), which bypasses high frequency desired, between the power supply
and the GND.
・We believe that this typical application circuit is to be recommended. However, to use it, make further thorough check for
the characteristics.
・For ICs with more than two power supplies, instantaneous rush currents may flow due to the order in which the power
supplies turn ON or delay in turning ON them. To avoid that, pay careful attention to power supply coupling capacitance,
and the width and routing of power supply wirings and GND pattern wirings.
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4/20
2009.04 - Rev.A
Technical Note
BU7331EKN
●Reference data
◎XIN=19.200MHz, OUTPUT=48.000MHz (VDD_CORE=1.8V, VDD_SIF=2.6V)
10dB/div
450mV/div
450mV/div
RBW=1kHz
VBW=100Hz
10nsec/div
500psec/div
10kHz/div
Fig.3 48.000MHz output waveform
VDD_CLK=2.6V, at CL=15pF
Fig.4 48.000MHz Period-Jitter
VDD_CLK=2.6V, at CL=15pF
Fig.5 48.000MHz Spectrum
VDD_CLK=2.6V, at CL=15pF
◎XIN=26.000MHz, OUTPUT=24.576MHZ (VDD_CORE=1.8V, VDD_SIF=1.8V)
(Notes) Generates in MULTI-PLL technology.
10dB/div
300mV/div
300mV/div
RBW=1kHz
VBW=100Hz
10nsec/div
500psec/div
10kHz/div
Fig.6 24.576MHz output waveform
VDD_CLK=1.8V, at CL=15pF
Fig.7 24.576MHz Period-Jitter
VDD_CLK=1.8V, at CL=15pF
Fig.8 24.576MHz Spectrum
VDD_CLK=1.8V, at CL=15pF
◎XIN=24.576MHz, OUTPUT=27.000MHZ (VDD_CORE=1.8V, VDD_SIF=3.3V)
(Notes) Generates in MULTI-PLL technology.
10dB/div
500mV/div
500mV/div
RBW=1kHz
VBW=100Hz
10nsec/div
500psec/div
10kHz/div
Fig.9 27.000MHz output waveform
VDD_CLK=3.3V, at CL=15pF
Fig.10 27.000MHz Period-Jitter
VDD_CLK=3.3V, at CL=15pF
Fig.11 27.000MHz Spectrum
VDD_CLK=3.3V, at CL=15pF
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5/20
2009.04 - Rev.A
Technical Note
BU7331EKN
●Examples of Frequency Matrices
Frequency Matrix (Analog1-1)
XIN=19.200MHz & P1×P2=2 [ P1×P2 is selectable from (1, 5, 10, or 20) ×(2, 4, 6, or 8).]
The white areas represent areas in which output is enabled. The blue areas represent areas in which output is enabled
under the condition of VDD_CLK2.7 to 3.6V.
The other areas (i.e., gray areas) represent areas in which output is disabled.
P1×P2=2
M
N
3
4
5
6
7
8
9
10
11
12
13
14
15
3
9.6000
7.2000
5.7600
4.8000
4.1143
3.6000
3.2000
2.8800
2.6182
2.4000
2.2154
2.0571
1.9200
4
12.8000
9.6000
7.6800
6.4000
5.4857
4.8000
4.2667
3.8400
3.4909
3.2000
2.9538
2.7429
2.5600
5
16.0000 12.0000
9.6000
8.0000
6.8571
6.0000
5.3333
4.8000
4.3636
4.0000
3.6923
3.4286
3.2000
6
19.2000 14.4000 11.5200
9.6000
8.2286
7.2000
6.4000
5.7600
5.2364
4.8000
4.4308
4.1143
3.8400
7
22.4000 16.8000 13.4400 11.2000
9.6000
8.4000
7.4667
6.7200
6.1091
5.6000
5.1692
4.8000
4.4800
8
25.6000 19.2000 15.3600 12.8000 10.9714
9.6000
8.5333
7.6800
6.9818
6.4000
5.9077
5.4857
5.1200
9
28.8000 21.6000 17.2800 14.4000 12.3429 10.8000
9.6000
8.6400
7.8545
7.2000
6.6462
6.1714
5.7600
10
32.0000 24.0000 19.2000 16.0000 13.7143 12.0000 10.6667
9.6000
8.7273
8.0000
7.3846
6.8571
6.4000
11
35.2000 26.4000 21.1200 17.6000 15.0857 13.2000 11.7333 10.5600
9.6000
8.8000
8.1231
7.5429
7.0400
12
38.4000 28.8000 23.0400 19.2000 16.4571 14.4000 12.8000 11.5200 10.4727
9.6000
8.8615
8.2286
7.6800
13
41.6000 31.2000 24.9600 20.8000 17.8286 15.6000 13.8667 12.4800 11.3455 10.4000
9.6000
8.9143
8.3200
14
44.8000 33.6000 26.8800 22.4000 19.2000 16.8000 14.9333 13.4400 12.2182 11.2000 10.3385
9.6000
8.9600
15
48.0000 36.0000 28.8000 24.0000 20.5714 18.0000 16.0000 14.4000 13.0909 12.0000 11.0769 10.2857
9.6000
16
51.2000 38.4000 30.7200 25.6000 21.9429 19.2000 17.0667 15.3600 13.9636 12.8000 11.8154 10.9714 10.2400
17
54.4000 40.8000 32.6400 27.2000 23.3143 20.4000 18.1333 16.3200 14.8364 13.6000 12.5538 11.6571 10.8800
18
57.6000 43.2000 34.5600 28.8000 24.6857 21.6000 19.2000 17.2800 15.7091 14.4000 13.2923 12.3429 11.5200
19
60.8000 45.6000 36.4800 30.4000 26.0571 22.8000 20.2667 18.2400 16.5818 15.2000 14.0308 13.0286 12.1600
20
64.0000 48.0000 38.4000 32.0000 27.4286 24.0000 21.3333 19.2000 17.4545 16.0000 14.7692 13.7143 12.8000
21
67.2000 50.4000 40.3200 33.6000 28.8000 25.2000 22.4000 20.1600 18.3273 16.8000 15.5077 14.4000 13.4400
22
70.4000 52.8000 42.2400 35.2000 30.1714 26.4000 23.4667 21.1200 19.2000 17.6000 16.2462 15.0857 14.0800
23
73.6000 55.2000 44.1600 36.8000 31.5429 27.6000 24.5333 22.0800 20.0727 18.4000 16.9846 15.7714 14.7200
24
76.8000 57.6000 46.0800 38.4000 32.9143 28.8000 25.6000 23.0400 20.9455 19.2000 17.7231 16.4571 15.3600
25
80.0000 60.0000 48.0000 40.0000 34.2857 30.0000 26.6667 24.0000 21.8182 20.0000 18.4615 17.1429 16.0000
26
83.2000 62.4000 49.9200 41.6000 35.6571 31.2000 27.7333 24.9600 22.6909 20.8000 19.2000 17.8286 16.6400
27
86.4000 64.8000 51.8400 43.2000 37.0286 32.4000 28.8000 25.9200 23.5636 21.6000 19.9385 18.5143 17.2800
28
89.6000 67.2000 53.7600 44.8000 38.4000 33.6000 29.8667 26.8800 24.4364 22.4000 20.6769 19.2000 17.9200
29
92.8000 69.6000 55.6800 46.4000 39.7714 34.8000 30.9333 27.8400 25.3091 23.2000 21.4154 19.8857 18.5600
30
96.0000 72.0000 57.6000 48.0000 41.1429 36.0000 32.0000 28.8000 26.1818 24.0000 22.1538 20.5714 19.2000
31
99.2000 74.4000 59.5200 49.6000 42.5143 37.2000 33.0667 29.7600 27.0545 24.8000 22.8923 21.2571 19.8400
32 102.4000 76.8000 61.4400 51.2000 43.8857 38.4000 34.1333 30.7200 27.9273 25.6000 23.6308 21.9429 20.4800
33 105.6000 79.2000 63.3600 52.8000 45.2571 39.6000 35.2000 31.6800 28.8000 26.4000 24.3692 22.6286 21.1200
34 108.8000 81.6000 65.2800 54.4000 46.6286 40.8000 36.2667 32.6400 29.6727 27.2000 25.1077 23.3143 21.7600
35 112.0000 84.0000 67.2000 56.0000 48.0000 42.0000 37.3333 33.6000 30.5455 28.0000 25.8462 24.0000 22.4000
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6/20
2009.04 - Rev.A
Technical Note
BU7331EKN
Frequency Matrix (Analog1-2)
XIN=19.200MHz & P1×P2=2 [ P1×P2 is selectable from (1, 5, 10, or 20) ×(2, 4, 6, or 8).]
The white areas represent areas in which output is enabled. The blue areas represent areas in which output is enabled
under the condition of VDD_CLK2.7 to 3.6V.
The other areas (i.e., gray areas) represent areas in which output is disabled.
P1×P2=2
M
N
6
7
8
9
10
11
12
13
14
15
16
17
18
28
44.8000 38.4000 33.6000 29.8667 26.8800 24.4364 22.4000 20.6769 19.2000 17.9200 16.8000 15.8118 14.9333
29
46.4000 39.7714 34.8000 30.9333 27.8400 25.3091 23.2000 21.4154 19.8857 18.5600 17.4000 16.3765 15.4667
30
48.0000 41.1429 36.0000 32.0000 28.8000 26.1818 24.0000 22.1538 20.5714 19.2000 18.0000 16.9412 16.0000
31
49.6000 42.5143 37.2000 33.0667 29.7600 27.0545 24.8000 22.8923 21.2571 19.8400 18.6000 17.5059 16.5333
32
51.2000 43.8857 38.4000 34.1333 30.7200 27.9273 25.6000 23.6308 21.9429 20.4800 19.2000 18.0706 17.0667
33
52.8000 45.2571 39.6000 35.2000 31.6800 28.8000 26.4000 24.3692 22.6286 21.1200 19.8000 18.6353 17.6000
34
54.4000 46.6286 40.8000 36.2667 32.6400 29.6727 27.2000 25.1077 23.3143 21.7600 20.4000 19.2000 18.1333
35
56.0000 48.0000 42.0000 37.3333 33.6000 30.5455 28.0000 25.8462 24.0000 22.4000 21.0000 19.7647 18.6667
36
57.6000 49.3714 43.2000 38.4000 34.5600 31.4182 28.8000 26.5846 24.6857 23.0400 21.6000 20.3294 19.2000
37
59.2000 50.7429 44.4000 39.4667 35.5200 32.2909 29.6000 27.3231 25.3714 23.6800 22.2000 20.8941 19.7333
38
60.8000 52.1143 45.6000 40.5333 36.4800 33.1636 30.4000 28.0615 26.0571 24.3200 22.8000 21.4588 20.2667
39
62.4000 53.4857 46.8000 41.6000 37.4400 34.0364 31.2000 28.8000 26.7429 24.9600 23.4000 22.0235 20.8000
40
64.0000 54.8571 48.0000 42.6667 38.4000 34.9091 32.0000 29.5385 27.4286 25.6000 24.0000 22.5882 21.3333
41
65.6000 56.2286 49.2000 43.7333 39.3600 35.7818 32.8000 30.2769 28.1143 26.2400 24.6000 23.1529 21.8667
42
67.2000 57.6000 50.4000 44.8000 40.3200 36.6545 33.6000 31.0154 28.8000 26.8800 25.2000 23.7176 22.4000
43
68.8000 58.9714 51.6000 45.8667 41.2800 37.5273 34.4000 31.7538 29.4857 27.5200 25.8000 24.2824 22.9333
44
70.4000 60.3429 52.8000 46.9333 42.2400 38.4000 35.2000 32.4923 30.1714 28.1600 26.4000 24.8471 23.4667
45
72.0000 61.7143 54.0000 48.0000 43.2000 39.2727 36.0000 33.2308 30.8571 28.8000 27.0000 25.4118 24.0000
46
73.6000 63.0857 55.2000 49.0667 44.1600 40.1455 36.8000 33.9692 31.5429 29.4400 27.6000 25.9765 24.5333
47
75.2000 64.4571 56.4000 50.1333 45.1200 41.0182 37.6000 34.7077 32.2286 30.0800 28.2000 26.5412 25.0667
48
76.8000 65.8286 57.6000 51.2000 46.0800 41.8909 38.4000 35.4462 32.9143 30.7200 28.8000 27.1059 25.6000
49
78.4000 67.2000 58.8000 52.2667 47.0400 42.7636 39.2000 36.1846 33.6000 31.3600 29.4000 27.6706 26.1333
50
80.0000 68.5714 60.0000 53.3333 48.0000 43.6364 40.0000 36.9231 34.2857 32.0000 30.0000 28.2353 26.6667
51
81.6000 69.9429 61.2000 54.4000 48.9600 44.5091 40.8000 37.6615 34.9714 32.6400 30.6000 28.8000 27.2000
52
83.2000 71.3143 62.4000 55.4667 49.9200 45.3818 41.6000 38.4000 35.6571 33.2800 31.2000 29.3647 27.7333
53
84.8000 72.6857 63.6000 56.5333 50.8800 46.2545 42.4000 39.1385 36.3429 33.9200 31.8000 29.9294 28.2667
54
86.4000 74.0571 64.8000 57.6000 51.8400 47.1273 43.2000 39.8769 37.0286 34.5600 32.4000 30.4941 28.8000
55
88.0000 75.4286 66.0000 58.6667 52.8000 48.0000 44.0000 40.6154 37.7143 35.2000 33.0000 31.0588 29.3333
56
89.6000 76.8000 67.2000 59.7333 53.7600 48.8727 44.8000 41.3538 38.4000 35.8400 33.6000 31.6235 29.8667
57
91.2000 78.1714 68.4000 60.8000 54.7200 49.7455 45.6000 42.0923 39.0857 36.4800 34.2000 32.1882 30.4000
58
92.8000 79.5429 69.6000 61.8667 55.6800 50.6182 46.4000 42.8308 39.7714 37.1200 34.8000 32.7529 30.9333
59
94.4000 80.9143 70.8000 62.9333 56.6400 51.4909 47.2000 43.5692 40.4571 37.7600 35.4000 33.3176 31.4667
60
96.0000 82.2857 72.0000 64.0000 57.6000 52.3636 48.0000 44.3077 41.1429 38.4000 36.0000 33.8824 32.0000
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7/20
2009.04 - Rev.A
Technical Note
BU7331EKN
Frequency Matrix (Analog1-3)
XIN=19.200MHz & P1×P2=2 [ P1×P2 is selectable from (1, 5, 10, or 20) ×(2, 4, 6, or 8).]
The white areas represent areas in which output is enabled. The blue areas represent areas in which output is enabled
under the condition of VDD_CLK2.7 to 3.6V.
The other areas (i.e., gray areas) represent areas in which output is disabled.
P1×P2=2
N
11
12
13
14
15
16
17
18
19
20
21
22
23
24
36 31.4182 28.8000 26.5846 24.6857 23.0400 21.6000 20.3294 19.2000 18.1895 17.2800 16.4571 15.7091 15.0261 14.4000
37 32.2909 29.6000 27.3231 25.3714 23.6800 22.2000 20.8941 19.7333 18.6947 17.7600 16.9143 16.1455 15.4435 14.8000
38 33.1636 30.4000 28.0615 26.0571 24.3200 22.8000 21.4588 20.2667 19.2000 18.2400 17.3714 16.5818 15.8609 15.2000
39 34.0364 31.2000 28.8000 26.7429 24.9600 23.4000 22.0235 20.8000 19.7053 18.7200 17.8286 17.0182 16.2783 15.6000
40 34.9091 32.0000 29.5385 27.4286 25.6000 24.0000 22.5882 21.3333 20.2105 19.2000 18.2857 17.4545 16.6957 16.0000
41 35.7818 32.8000 30.2769 28.1143 26.2400 24.6000 23.1529 21.8667 20.7158 19.6800 18.7429 17.8909 17.1130 16.4000
42 36.6545 33.6000 31.0154 28.8000 26.8800 25.2000 23.7176 22.4000 21.2211 20.1600 19.2000 18.3273 17.5304 16.8000
43 37.5273 34.4000 31.7538 29.4857 27.5200 25.8000 24.2824 22.9333 21.7263 20.6400 19.6571 18.7636 17.9478 17.2000
44 38.4000 35.2000 32.4923 30.1714 28.1600 26.4000 24.8471 23.4667 22.2316 21.1200 20.1143 19.2000 18.3652 17.6000
45 39.2727 36.0000 33.2308 30.8571 28.8000 27.0000 25.4118 24.0000 22.7368 21.6000 20.5714 19.6364 18.7826 18.0000
46 40.1455 36.8000 33.9692 31.5429 29.4400 27.6000 25.9765 24.5333 23.2421 22.0800 21.0286 20.0727 19.2000 18.4000
47 41.0182 37.6000 34.7077 32.2286 30.0800 28.2000 26.5412 25.0667 23.7474 22.5600 21.4857 20.5091 19.6174 18.8000
48 41.8909 38.4000 35.4462 32.9143 30.7200 28.8000 27.1059 25.6000 24.2526 23.0400 21.9429 20.9455 20.0348 19.2000
49 42.7636 39.2000 36.1846 33.6000 31.3600 29.4000 27.6706 26.1333 24.7579 23.5200 22.4000 21.3818 20.4522 19.6000
M
50 43.6364 40.0000 36.9231 34.2857 32.0000 30.0000 28.2353 26.6667 25.2632 24.0000 22.8571 21.8182 20.8696 20.0000
51 44.5091 40.8000 37.6615 34.9714 32.6400 30.6000 28.8000 27.2000 25.7684 24.4800 23.3143 22.2545 21.2870 20.4000
52 45.3818 41.6000 38.4000 35.6571 33.2800 31.2000 29.3647 27.7333 26.2737 24.9600 23.7714 22.6909 21.7043 20.8000
53 46.2545 42.4000 39.1385 36.3429 33.9200 31.8000 29.9294 28.2667 26.7789 25.4400 24.2286 23.1273 22.1217 21.2000
54 47.1273 43.2000 39.8769 37.0286 34.5600 32.4000 30.4941 28.8000 27.2842 25.9200 24.6857 23.5636 22.5391 21.6000
55 48.0000 44.0000 40.6154 37.7143 35.2000 33.0000 31.0588 29.3333 27.7895 26.4000 25.1429 24.0000 22.9565 22.0000
56 48.8727 44.8000 41.3538 38.4000 35.8400 33.6000 31.6235 29.8667 28.2947 26.8800 25.6000 24.4364 23.3739 22.4000
57 49.7455 45.6000 42.0923 39.0857 36.4800 34.2000 32.1882 30.4000 28.8000 27.3600 26.0571 24.8727 23.7913 22.8000
58 50.6182 46.4000 42.8308 39.7714 37.1200 34.8000 32.7529 30.9333 29.3053 27.8400 26.5143 25.3091 24.2087 23.2000
59 51.4909 47.2000 43.5692 40.4571 37.7600 35.4000 33.3176 31.4667 29.8105 28.3200 26.9714 25.7455 24.6261 23.6000
60 52.3636 48.0000 44.3077 41.1429 38.4000 36.0000 33.8824 32.0000 30.3158 28.8000 27.4286 26.1818 25.0435 24.0000
61 53.2364 48.8000 45.0462 41.8286 39.0400 36.6000 34.4471 32.5333 30.8211 29.2800 27.8857 26.6182 25.4609 24.4000
62 54.1091 49.6000 45.7846 42.5143 39.6800 37.2000 35.0118 33.0667 31.3263 29.7600 28.3429 27.0545 25.8783 24.8000
63 54.9818 50.4000 46.5231 43.2000 40.3200 37.8000 35.5765 33.6000 31.8316 30.2400 28.8000 27.4909 26.2957 25.2000
64 55.8545 51.2000 47.2615 43.8857 40.9600 38.4000 36.1412 34.1333 32.3368 30.7200 29.2571 27.9273 26.7130 25.6000
65 56.7273 52.0000 48.0000 44.5714 41.6000 39.0000 36.7059 34.6667 32.8421 31.2000 29.7143 28.3636 27.1304 26.0000
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© 2009 ROHM Co., Ltd. All rights reserved.
8/20
2009.04 - Rev.A
Technical Note
BU7331EKN
Frequency Matrix (Analog2-1)
XIN=19.200MHz & P1×P2=8 [ P1×P2 is selectable from (1, 5, 10, or 20) ×(2, 4, 6, or 8).]
The white areas represent areas in which output is enabled. The other areas (i.e., gray areas) represent areas in
which output is disabled.
P1×P2=8
M
N
3
4
5
6
7
8
9
10
11
12
13
14
15
62
49.6000 37.2000 29.7600 24.8000 21.2571 18.6000 16.5333 14.8800 13.5273 12.4000 11.4462 10.6286
63
50.4000 37.8000 30.2400 25.2000 21.6000 18.9000 16.8000 15.1200 13.7455 12.6000 11.6308 10.8000 10.0800
64
51.2000 38.4000 30.7200 25.6000 21.9429 19.2000 17.0667 15.3600 13.9636 12.8000 11.8154 10.9714 10.2400
65
52.0000 39.0000 31.2000 26.0000 22.2857 19.5000 17.3333 15.6000 14.1818 13.0000 12.0000 11.1429 10.4000
66
52.8000 39.6000 31.6800 26.4000 22.6286 19.8000 17.6000 15.8400 14.4000 13.2000 12.1846 11.3143 10.5600
67
53.6000 40.2000 32.1600 26.8000 22.9714 20.1000 17.8667 16.0800 14.6182 13.4000 12.3692 11.4857 10.7200
68
54.4000 40.8000 32.6400 27.2000 23.3143 20.4000 18.1333 16.3200 14.8364 13.6000 12.5538 11.6571 10.8800
69
55.2000 41.4000 33.1200 27.6000 23.6571 20.7000 18.4000 16.5600 15.0545 13.8000 12.7385 11.8286 11.0400
70
56.0000 42.0000 33.6000 28.0000 24.0000 21.0000 18.6667 16.8000 15.2727 14.0000 12.9231 12.0000 11.2000
71
56.8000 42.6000 34.0800 28.4000 24.3429 21.3000 18.9333 17.0400 15.4909 14.2000 13.1077 12.1714 11.3600
72
57.6000 43.2000 34.5600 28.8000 24.6857 21.6000 19.2000 17.2800 15.7091 14.4000 13.2923 12.3429 11.5200
73
58.4000 43.8000 35.0400 29.2000 25.0286 21.9000 19.4667 17.5200 15.9273 14.6000 13.4769 12.5143 11.6800
74
59.2000 44.4000 35.5200 29.6000 25.3714 22.2000 19.7333 17.7600 16.1455 14.8000 13.6615 12.6857 11.8400
75
60.0000 45.0000 36.0000 30.0000 25.7143 22.5000 20.0000 18.0000 16.3636 15.0000 13.8462 12.8571 12.0000
76
60.8000 45.6000 36.4800 30.4000 26.0571 22.8000 20.2667 18.2400 16.5818 15.2000 14.0308 13.0286 12.1600
77
61.6000 46.2000 36.9600 30.8000 26.4000 23.1000 20.5333 18.4800 16.8000 15.4000 14.2154 13.2000 12.3200
78
62.4000 46.8000 37.4400 31.2000 26.7429 23.4000 20.8000 18.7200 17.0182 15.6000 14.4000 13.3714 12.4800
79
63.2000 47.4000 37.9200 31.6000 27.0857 23.7000 21.0667 18.9600 17.2364 15.8000 14.5846 13.5429 12.6400
80
64.0000 48.0000 38.4000 32.0000 27.4286 24.0000 21.3333 19.2000 17.4545 16.0000 14.7692 13.7143 12.8000
81
64.8000 48.6000 38.8800 32.4000 27.7714 24.3000 21.6000 19.4400 17.6727 16.2000 14.9538 13.8857 12.9600
82
65.6000 49.2000 39.3600 32.8000 28.1143 24.6000 21.8667 19.6800 17.8909 16.4000 15.1385 14.0571 13.1200
83
66.4000 49.8000 39.8400 33.2000 28.4571 24.9000 22.1333 19.9200 18.1091 16.6000 15.3231 14.2286 13.2800
84
67.2000 50.4000 40.3200 33.6000 28.8000 25.2000 22.4000 20.1600 18.3273 16.8000 15.5077 14.4000 13.4400
85
68.0000 51.0000 40.8000 34.0000 29.1429 25.5000 22.6667 20.4000 18.5455 17.0000 15.6923 14.5714 13.6000
86
68.8000 51.6000 41.2800 34.4000 29.4857 25.8000 22.9333 20.6400 18.7636 17.2000 15.8769 14.7429 13.7600
87
69.6000 52.2000 41.7600 34.8000 29.8286 26.1000 23.2000 20.8800 18.9818 17.4000 16.0615 14.9143 13.9200
88
70.4000 52.8000 42.2400 35.2000 30.1714 26.4000 23.4667 21.1200 19.2000 17.6000 16.2462 15.0857 14.0800
89
71.2000 53.4000 42.7200 35.6000 30.5143 26.7000 23.7333 21.3600 19.4182 17.8000 16.4308 15.2571 14.2400
90
72.0000 54.0000 43.2000 36.0000 30.8571 27.0000 24.0000 21.6000 19.6364 18.0000 16.6154 15.4286 14.4000
91
72.8000 54.6000 43.6800 36.4000 31.2000 27.3000 24.2667 21.8400 19.8545 18.2000 16.8000 15.6000 14.5600
92
73.6000 55.2000 44.1600 36.8000 31.5429 27.6000 24.5333 22.0800 20.0727 18.4000 16.9846 15.7714 14.7200
93
74.4000 55.8000 44.6400 37.2000 31.8857 27.9000 24.8000 22.3200 20.2909 18.6000 17.1692 15.9429 14.8800
www.rohm.com
© 2009 ROHM Co., Ltd. All rights reserved.
9/20
9.9200
2009.04 - Rev.A
Technical Note
BU7331EKN
Frequency Matrix (Analog2-2)
XIN=19.200MHz & P1×P2=8 [ P1×P2 is selectable from (1, 5, 10, or 20) ×(2, 4, 6, or 8).]
The white areas represent areas in which output is enabled. The other areas (i.e., gray areas) represent areas in
which output is disabled.
P1×P2=8
N
6
7
8
9
10
11
12
13
14
15
16
17
18
93
37.2000 31.8857 27.9000 24.8000 22.3200 20.2909 18.6000 17.1692 15.9429 14.8800 13.9500 13.1294 12.4000
94
37.6000 32.2286 28.2000 25.0667 22.5600 20.5091 18.8000 17.3538 16.1143 15.0400 14.1000 13.2706 12.5333
95
38.0000 32.5714 28.5000 25.3333 22.8000 20.7273 19.0000 17.5385 16.2857 15.2000 14.2500 13.4118 12.6667
96
38.4000 32.9143 28.8000 25.6000 23.0400 20.9455 19.2000 17.7231 16.4571 15.3600 14.4000 13.5529 12.8000
97
38.8000 33.2571 29.1000 25.8667 23.2800 21.1636 19.4000 17.9077 16.6286 15.5200 14.5500 13.6941 12.9333
98
39.2000 33.6000 29.4000 26.1333 23.5200 21.3818 19.6000 18.0923 16.8000 15.6800 14.7000 13.8353 13.0667
99
39.6000 33.9429 29.7000 26.4000 23.7600 21.6000 19.8000 18.2769 16.9714 15.8400 14.8500 13.9765 13.2000
100 40.0000 34.2857 30.0000 26.6667 24.0000 21.8182 20.0000 18.4615 17.1429 16.0000 15.0000 14.1176 13.3333
101 40.4000 34.6286 30.3000 26.9333 24.2400 22.0364 20.2000 18.6462 17.3143 16.1600 15.1500 14.2588 13.4667
102 40.8000 34.9714 30.6000 27.2000 24.4800 22.2545 20.4000 18.8308 17.4857 16.3200 15.3000 14.4000 13.6000
103 41.2000 35.3143 30.9000 27.4667 24.7200 22.4727 20.6000 19.0154 17.6571 16.4800 15.4500 14.5412 13.7333
104 41.6000 35.6571 31.2000 27.7333 24.9600 22.6909 20.8000 19.2000 17.8286 16.6400 15.6000 14.6824 13.8667
105 42.0000 36.0000 31.5000 28.0000 25.2000 22.9091 21.0000 19.3846 18.0000 16.8000 15.7500 14.8235 14.0000
106 42.4000 36.3429 31.8000 28.2667 25.4400 23.1273 21.2000 19.5692 18.1714 16.9600 15.9000 14.9647 14.1333
107 42.8000 36.6857 32.1000 28.5333 25.6800 23.3455 21.4000 19.7538 18.3429 17.1200 16.0500 15.1059 14.2667
M
108 43.2000 37.0286 32.4000 28.8000 25.9200 23.5636 21.6000 19.9385 18.5143 17.2800 16.2000 15.2471 14.4000
109 43.6000 37.3714 32.7000 29.0667 26.1600 23.7818 21.8000 20.1231 18.6857 17.4400 16.3500 15.3882 14.5333
110 44.0000 37.7143 33.0000 29.3333 26.4000 24.0000 22.0000 20.3077 18.8571 17.6000 16.5000 15.5294 14.6667
111 44.4000 38.0571 33.3000 29.6000 26.6400 24.2182 22.2000 20.4923 19.0286 17.7600 16.6500 15.6706 14.8000
112 44.8000 38.4000 33.6000 29.8667 26.8800 24.4364 22.4000 20.6769 19.2000 17.9200 16.8000 15.8118 14.9333
113 45.2000 38.7429 33.9000 30.1333 27.1200 24.6545 22.6000 20.8615 19.3714 18.0800 16.9500 15.9529 15.0667
114 45.6000 39.0857 34.2000 30.4000 27.3600 24.8727 22.8000 21.0462 19.5429 18.2400 17.1000 16.0941 15.2000
115 46.0000 39.4286 34.5000 30.6667 27.6000 25.0909 23.0000 21.2308 19.7143 18.4000 17.2500 16.2353 15.3333
116 46.4000 39.7714 34.8000 30.9333 27.8400 25.3091 23.2000 21.4154 19.8857 18.5600 17.4000 16.3765 15.4667
117 46.8000 40.1143 35.1000 31.2000 28.0800 25.5273 23.4000 21.6000 20.0571 18.7200 17.5500 16.5176 15.6000
118 47.2000 40.4571 35.4000 31.4667 28.3200 25.7455 23.6000 21.7846 20.2286 18.8800 17.7000 16.6588 15.7333
119 47.6000 40.8000 35.7000 31.7333 28.5600 25.9636 23.8000 21.9692 20.4000 19.0400 17.8500 16.8000 15.8667
120 48.0000 41.1429 36.0000 32.0000 28.8000 26.1818 24.0000 22.1538 20.5714 19.2000 18.0000 16.9412 16.0000
121 48.4000 41.4857 36.3000 32.2667 29.0400 26.4000 24.2000 22.3385 20.7429 19.3600 18.1500 17.0824 16.1333
122 48.8000 41.8286 36.6000 32.5333 29.2800 26.6182 24.4000 22.5231 20.9143 19.5200 18.3000 17.2235 16.2667
123 49.2000 42.1714 36.9000 32.8000 29.5200 26.8364 24.6000 22.7077 21.0857 19.6800 18.4500 17.3647 16.4000
124 49.6000 42.5143 37.2000 33.0667 29.7600 27.0545 24.8000 22.8923 21.2571 19.8400 18.6000 17.5059 16.5333
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© 2009 ROHM Co., Ltd. All rights reserved.
10/20
2009.04 - Rev.A
Technical Note
BU7331EKN
Frequency Matrix (Analog2-3)
XIN=19.200MHz & P1×P2=8 [ P1×P2 is selectable from (1, 5, 10, or 20) ×(2, 4, 6, or 8).]
The white areas represent areas in which output is enabled. The other areas (i.e., gray areas) represent areas in which
output is disabled.
P1×P2=8
N
9
10
11
12
13
14
15
16
17
18
19
20
21
124 33.0667 29.7600 27.0545 24.8000 22.8923 21.2571 19.8400 18.6000 17.5059 16.5333 15.6632 14.8800 14.1714
125 33.3333 30.0000 27.2727 25.0000 23.0769 21.4286 20.0000 18.7500 17.6471 16.6667 15.7895 15.0000 14.2857
126 33.6000 30.2400 27.4909 25.2000 23.2615 21.6000 20.1600 18.9000 17.7882 16.8000 15.9158 15.1200 14.4000
127 33.8667 30.4800 27.7091 25.4000 23.4462 21.7714 20.3200 19.0500 17.9294 16.9333 16.0421 15.2400 14.5143
128 34.1333 30.7200 27.9273 25.6000 23.6308 21.9429 20.4800 19.2000 18.0706 17.0667 16.1684 15.3600 14.6286
129 34.4000 30.9600 28.1455 25.8000 23.8154 22.1143 20.6400 19.3500 18.2118 17.2000 16.2947 15.4800 14.7429
130 34.6667 31.2000 28.3636 26.0000 24.0000 22.2857 20.8000 19.5000 18.3529 17.3333 16.4211 15.6000 14.8571
131 34.9333 31.4400 28.5818 26.2000 24.1846 22.4571 20.9600 19.6500 18.4941 17.4667 16.5474 15.7200 14.9714
132 35.2000 31.6800 28.8000 26.4000 24.3692 22.6286 21.1200 19.8000 18.6353 17.6000 16.6737 15.8400 15.0857
133 35.4667 31.9200 29.0182 26.6000 24.5538 22.8000 21.2800 19.9500 18.7765 17.7333 16.8000 15.9600 15.2000
134 35.7333 32.1600 29.2364 26.8000 24.7385 22.9714 21.4400 20.1000 18.9176 17.8667 16.9263 16.0800 15.3143
135 36.0000 32.4000 29.4545 27.0000 24.9231 23.1429 21.6000 20.2500 19.0588 18.0000 17.0526 16.2000 15.4286
136 36.2667 32.6400 29.6727 27.2000 25.1077 23.3143 21.7600 20.4000 19.2000 18.1333 17.1789 16.3200 15.5429
137 36.5333 32.8800 29.8909 27.4000 25.2923 23.4857 21.9200 20.5500 19.3412 18.2667 17.3053 16.4400 15.6571
138 36.8000 33.1200 30.1091 27.6000 25.4769 23.6571 22.0800 20.7000 19.4824 18.4000 17.4316 16.5600 15.7714
M
139 37.0667 33.3600 30.3273 27.8000 25.6615 23.8286 22.2400 20.8500 19.6235 18.5333 17.5579 16.6800 15.8857
140 37.3333 33.6000 30.5455 28.0000 25.8462 24.0000 22.4000 21.0000 19.7647 18.6667 17.6842 16.8000 16.0000
141 37.6000 33.8400 30.7636 28.2000 26.0308 24.1714 22.5600 21.1500 19.9059 18.8000 17.8105 16.9200 16.1143
142 37.8667 34.0800 30.9818 28.4000 26.2154 24.3429 22.7200 21.3000 20.0471 18.9333 17.9368 17.0400 16.2286
143 38.1333 34.3200 31.2000 28.6000 26.4000 24.5143 22.8800 21.4500 20.1882 19.0667 18.0632 17.1600 16.3429
144 38.4000 34.5600 31.4182 28.8000 26.5846 24.6857 23.0400 21.6000 20.3294 19.2000 18.1895 17.2800 16.4571
145 38.6667 34.8000 31.6364 29.0000 26.7692 24.8571 23.2000 21.7500 20.4706 19.3333 18.3158 17.4000 16.5714
146 38.9333 35.0400 31.8545 29.2000 26.9538 25.0286 23.3600 21.9000 20.6118 19.4667 18.4421 17.5200 16.6857
147 39.2000 35.2800 32.0727 29.4000 27.1385 25.2000 23.5200 22.0500 20.7529 19.6000 18.5684 17.6400 16.8000
148 39.4667 35.5200 32.2909 29.6000 27.3231 25.3714 23.6800 22.2000 20.8941 19.7333 18.6947 17.7600 16.9143
149 39.7333 35.7600 32.5091 29.8000 27.5077 25.5429 23.8400 22.3500 21.0353 19.8667 18.8211 17.8800 17.0286
150 40.0000 36.0000 32.7273 30.0000 27.6923 25.7143 24.0000 22.5000 21.1765 20.0000 18.9474 18.0000 17.1429
151 40.2667 36.2400 32.9455 30.2000 27.8769 25.8857 24.1600 22.6500 21.3176 20.1333 19.0737 18.1200 17.2571
152 40.5333 36.4800 33.1636 30.4000 28.0615 26.0571 24.3200 22.8000 21.4588 20.2667 19.2000 18.2400 17.3714
153 40.8000 36.7200 33.3818 30.6000 28.2462 26.2286 24.4800 22.9500 21.6000 20.4000 19.3263 18.3600 17.4857
154 41.0667 36.9600 33.6000 30.8000 28.4308 26.4000 24.6400 23.1000 21.7412 20.5333 19.4526 18.4800 17.6000
155 41.3333 37.2000 33.8182 31.0000 28.6154 26.5714 24.8000 23.2500 21.8824 20.6667 19.5789 18.6000 17.7143
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© 2009 ROHM Co., Ltd. All rights reserved.
11/20
2009.04 - Rev.A
Technical Note
BU7331EKN
Frequency Matrix (Analog2-4)
XIN=19.200MHz & P1×P2=8 [ P1×P2 is selectable from (1, 5, 10, or 20) ×(2, 4, 6, or 8).]
The white areas represent areas in which output is enabled. The other areas (i.e., gray areas) represent areas in which
output is disabled.
P1×P2=8
N
12
13
14
15
16
17
18
19
20
21
22
23
24
155 31.0000 28.6154 26.5714 24.8000 23.2500 21.8824 20.6667 19.5789 18.6000 17.7143 16.9091 16.1739 15.5000
156 31.2000 28.8000 26.7429 24.9600 23.4000 22.0235 20.8000 19.7053 18.7200 17.8286 17.0182 16.2783 15.6000
157 31.4000 28.9846 26.9143 25.1200 23.5500 22.1647 20.9333 19.8316 18.8400 17.9429 17.1273 16.3826 15.7000
158 31.6000 29.1692 27.0857 25.2800 23.7000 22.3059 21.0667 19.9579 18.9600 18.0571 17.2364 16.4870 15.8000
159 31.8000 29.3538 27.2571 25.4400 23.8500 22.4471 21.2000 20.0842 19.0800 18.1714 17.3455 16.5913 15.9000
160 32.0000 29.5385 27.4286 25.6000 24.0000 22.5882 21.3333 20.2105 19.2000 18.2857 17.4545 16.6957 16.0000
161 32.2000 29.7231 27.6000 25.7600 24.1500 22.7294 21.4667 20.3368 19.3200 18.4000 17.5636 16.8000 16.1000
162 32.4000 29.9077 27.7714 25.9200 24.3000 22.8706 21.6000 20.4632 19.4400 18.5143 17.6727 16.9043 16.2000
163 32.6000 30.0923 27.9429 26.0800 24.4500 23.0118 21.7333 20.5895 19.5600 18.6286 17.7818 17.0087 16.3000
164 32.8000 30.2769 28.1143 26.2400 24.6000 23.1529 21.8667 20.7158 19.6800 18.7429 17.8909 17.1130 16.4000
165 33.0000 30.4615 28.2857 26.4000 24.7500 23.2941 22.0000 20.8421 19.8000 18.8571 18.0000 17.2174 16.5000
166 33.2000 30.6462 28.4571 26.5600 24.9000 23.4353 22.1333 20.9684 19.9200 18.9714 18.1091 17.3217 16.6000
167 33.4000 30.8308 28.6286 26.7200 25.0500 23.5765 22.2667 21.0947 20.0400 19.0857 18.2182 17.4261 16.7000
168 33.6000 31.0154 28.8000 26.8800 25.2000 23.7176 22.4000 21.2211 20.1600 19.2000 18.3273 17.5304 16.8000
169 33.8000 31.2000 28.9714 27.0400 25.3500 23.8588 22.5333 21.3474 20.2800 19.3143 18.4364 17.6348 16.9000
M
170 34.0000 31.3846 29.1429 27.2000 25.5000 24.0000 22.6667 21.4737 20.4000 19.4286 18.5455 17.7391 17.0000
171 34.2000 31.5692 29.3143 27.3600 25.6500 24.1412 22.8000 21.6000 20.5200 19.5429 18.6545 17.8435 17.1000
172 34.4000 31.7538 29.4857 27.5200 25.8000 24.2824 22.9333 21.7263 20.6400 19.6571 18.7636 17.9478 17.2000
173 34.6000 31.9385 29.6571 27.6800 25.9500 24.4235 23.0667 21.8526 20.7600 19.7714 18.8727 18.0522 17.3000
174 34.8000 32.1231 29.8286 27.8400 26.1000 24.5647 23.2000 21.9789 20.8800 19.8857 18.9818 18.1565 17.4000
175 35.0000 32.3077 30.0000 28.0000 26.2500 24.7059 23.3333 22.1053 21.0000 20.0000 19.0909 18.2609 17.5000
176 35.2000 32.4923 30.1714 28.1600 26.4000 24.8471 23.4667 22.2316 21.1200 20.1143 19.2000 18.3652 17.6000
177 35.4000 32.6769 30.3429 28.3200 26.5500 24.9882 23.6000 22.3579 21.2400 20.2286 19.3091 18.4696 17.7000
178 35.6000 32.8615 30.5143 28.4800 26.7000 25.1294 23.7333 22.4842 21.3600 20.3429 19.4182 18.5739 17.8000
179 35.8000 33.0462 30.6857 28.6400 26.8500 25.2706 23.8667 22.6105 21.4800 20.4571 19.5273 18.6783 17.9000
180 36.0000 33.2308 30.8571 28.8000 27.0000 25.4118 24.0000 22.7368 21.6000 20.5714 19.6364 18.7826 18.0000
181 36.2000 33.4154 31.0286 28.9600 27.1500 25.5529 24.1333 22.8632 21.7200 20.6857 19.7455 18.8870 18.1000
182 36.4000 33.6000 31.2000 29.1200 27.3000 25.6941 24.2667 22.9895 21.8400 20.8000 19.8545 18.9913 18.2000
183 36.6000 33.7846 31.3714 29.2800 27.4500 25.8353 24.4000 23.1158 21.9600 20.9143 19.9636 19.0957 18.3000
184 36.8000 33.9692 31.5429 29.4400 27.6000 25.9765 24.5333 23.2421 22.0800 21.0286 20.0727 19.2000 18.4000
185 37.0000 34.1538 31.7143 29.6000 27.7500 26.1176 24.6667 23.3684 22.2000 21.1429 20.1818 19.3043 18.5000
186 37.2000 34.3385 31.8857 29.7600 27.9000 26.2588 24.8000 23.4947 22.3200 21.2571 20.2909 19.4087 18.6000
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12/20
2009.04 - Rev.A
Technical Note
BU7331EKN
Frequency Matrix (Analog2-5)
XIN=19.200MHz & P1×P2=8 [ P1×P2 is selectable from (1, 5, 10, or 20) ×(2, 4, 6, or 8).]
The white areas represent areas in which output is enabled. The other areas (i.e., gray areas) represent areas in which
output is disabled.
P1×P2=8
N
14
15
16
17
18
19
20
21
22
23
24
25
26
186 31.8857 29.7600 27.9000 26.2588 24.8000 23.4947 22.3200 21.2571 20.2909 19.4087 18.6000 17.8560 17.1692
187 32.0571 29.9200 28.0500 26.4000 24.9333 23.6211 22.4400 21.3714 20.4000 19.5130 18.7000 17.9520 17.2615
188 32.2286 30.0800 28.2000 26.5412 25.0667 23.7474 22.5600 21.4857 20.5091 19.6174 18.8000 18.0480 17.3538
189 32.4000 30.2400 28.3500 26.6824 25.2000 23.8737 22.6800 21.6000 20.6182 19.7217 18.9000 18.1440 17.4462
190 32.5714 30.4000 28.5000 26.8235 25.3333 24.0000 22.8000 21.7143 20.7273 19.8261 19.0000 18.2400 17.5385
191 32.7429 30.5600 28.6500 26.9647 25.4667 24.1263 22.9200 21.8286 20.8364 19.9304 19.1000 18.3360 17.6308
192 32.9143 30.7200 28.8000 27.1059 25.6000 24.2526 23.0400 21.9429 20.9455 20.0348 19.2000 18.4320 17.7231
193 33.0857 30.8800 28.9500 27.2471 25.7333 24.3789 23.1600 22.0571 21.0545 20.1391 19.3000 18.5280 17.8154
194 33.2571 31.0400 29.1000 27.3882 25.8667 24.5053 23.2800 22.1714 21.1636 20.2435 19.4000 18.6240 17.9077
195 33.4286 31.2000 29.2500 27.5294 26.0000 24.6316 23.4000 22.2857 21.2727 20.3478 19.5000 18.7200 18.0000
196 33.6000 31.3600 29.4000 27.6706 26.1333 24.7579 23.5200 22.4000 21.3818 20.4522 19.6000 18.8160 18.0923
197 33.7714 31.5200 29.5500 27.8118 26.2667 24.8842 23.6400 22.5143 21.4909 20.5565 19.7000 18.9120 18.1846
198 33.9429 31.6800 29.7000 27.9529 26.4000 25.0105 23.7600 22.6286 21.6000 20.6609 19.8000 19.0080 18.2769
199 34.1143 31.8400 29.8500 28.0941 26.5333 25.1368 23.8800 22.7429 21.7091 20.7652 19.9000 19.1040 18.3692
200 34.2857 32.0000 30.0000 28.2353 26.6667 25.2632 24.0000 22.8571 21.8182 20.8696 20.0000 19.2000 18.4615
M
201 34.4571 32.1600 30.1500 28.3765 26.8000 25.3895 24.1200 22.9714 21.9273 20.9739 20.1000 19.2960 18.5538
202 34.6286 32.3200 30.3000 28.5176 26.9333 25.5158 24.2400 23.0857 22.0364 21.0783 20.2000 19.3920 18.6462
203 34.8000 32.4800 30.4500 28.6588 27.0667 25.6421 24.3600 23.2000 22.1455 21.1826 20.3000 19.4880 18.7385
204 34.9714 32.6400 30.6000 28.8000 27.2000 25.7684 24.4800 23.3143 22.2545 21.2870 20.4000 19.5840 18.8308
205 35.1429 32.8000 30.7500 28.9412 27.3333 25.8947 24.6000 23.4286 22.3636 21.3913 20.5000 19.6800 18.9231
206 35.3143 32.9600 30.9000 29.0824 27.4667 26.0211 24.7200 23.5429 22.4727 21.4957 20.6000 19.7760 19.0154
207 35.4857 33.1200 31.0500 29.2235 27.6000 26.1474 24.8400 23.6571 22.5818 21.6000 20.7000 19.8720 19.1077
208 35.6571 33.2800 31.2000 29.3647 27.7333 26.2737 24.9600 23.7714 22.6909 21.7043 20.8000 19.9680 19.2000
209 35.8286 33.4400 31.3500 29.5059 27.8667 26.4000 25.0800 23.8857 22.8000 21.8087 20.9000 20.0640 19.2923
210 36.0000 33.6000 31.5000 29.6471 28.0000 26.5263 25.2000 24.0000 22.9091 21.9130 21.0000 20.1600 19.3846
211 36.1714 33.7600 31.6500 29.7882 28.1333 26.6526 25.3200 24.1143 23.0182 22.0174 21.1000 20.2560 19.4769
212 36.3429 33.9200 31.8000 29.9294 28.2667 26.7789 25.4400 24.2286 23.1273 22.1217 21.2000 20.3520 19.5692
213 36.5143 34.0800 31.9500 30.0706 28.4000 26.9053 25.5600 24.3429 23.2364 22.2261 21.3000 20.4480 19.6615
214 36.6857 34.2400 32.1000 30.2118 28.5333 27.0316 25.6800 24.4571 23.3455 22.3304 21.4000 20.5440 19.7538
215 36.8571 34.4000 32.2500 30.3529 28.6667 27.1579 25.8000 24.5714 23.4545 22.4348 21.5000 20.6400 19.8462
216 37.0286 34.5600 32.4000 30.4941 28.8000 27.2842 25.9200 24.6857 23.5636 22.5391 21.6000 20.7360 19.9385
217 37.2000 34.7200 32.5500 30.6353 28.9333 27.4105 26.0400 24.8000 23.6727 22.6435 21.7000 20.8320 20.0308
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13/20
2009.04 - Rev.A
Technical Note
BU7331EKN
Frequency Matrix (Analog2-6)
XIN=19.200MHz & P1×P2=8 [ P1×P2 is selectable from (1, 5, 10, or 20) ×(2, 4, 6, or 8).]
The white areas represent areas in which output is enabled. The other areas (i.e., gray areas) represent areas in which
output is disabled.
P1×P2=8
N
16
17
18
19
20
21
22
23
24
25
26
27
28
214 32.1000 30.2118 28.5333 27.0316 25.6800 24.4571 23.3455 22.3304 21.4000 20.5440 19.7538 19.0222 18.3429
215 32.2500 30.3529 28.6667 27.1579 25.8000 24.5714 23.4545 22.4348 21.5000 20.6400 19.8462 19.1111 18.4286
216 32.4000 30.4941 28.8000 27.2842 25.9200 24.6857 23.5636 22.5391 21.6000 20.7360 19.9385 19.2000 18.5143
217 32.5500 30.6353 28.9333 27.4105 26.0400 24.8000 23.6727 22.6435 21.7000 20.8320 20.0308 19.2889 18.6000
218 32.7000 30.7765 29.0667 27.5368 26.1600 24.9143 23.7818 22.7478 21.8000 20.9280 20.1231 19.3778 18.6857
219 32.8500 30.9176 29.2000 27.6632 26.2800 25.0286 23.8909 22.8522 21.9000 21.0240 20.2154 19.4667 18.7714
220 33.0000 31.0588 29.3333 27.7895 26.4000 25.1429 24.0000 22.9565 22.0000 21.1200 20.3077 19.5556 18.8571
221 33.1500 31.2000 29.4667 27.9158 26.5200 25.2571 24.1091 23.0609 22.1000 21.2160 20.4000 19.6444 18.9429
222 33.3000 31.3412 29.6000 28.0421 26.6400 25.3714 24.2182 23.1652 22.2000 21.3120 20.4923 19.7333 19.0286
223 33.4500 31.4824 29.7333 28.1684 26.7600 25.4857 24.3273 23.2696 22.3000 21.4080 20.5846 19.8222 19.1143
224 33.6000 31.6235 29.8667 28.2947 26.8800 25.6000 24.4364 23.3739 22.4000 21.5040 20.6769 19.9111 19.2000
225 33.7500 31.7647 30.0000 28.4211 27.0000 25.7143 24.5455 23.4783 22.5000 21.6000 20.7692 20.0000 19.2857
226 33.9000 31.9059 30.1333 28.5474 27.1200 25.8286 24.6545 23.5826 22.6000 21.6960 20.8615 20.0889 19.3714
227 34.0500 32.0471 30.2667 28.6737 27.2400 25.9429 24.7636 23.6870 22.7000 21.7920 20.9538 20.1778 19.4571
228 34.2000 32.1882 30.4000 28.8000 27.3600 26.0571 24.8727 23.7913 22.8000 21.8880 21.0462 20.2667 19.5429
M
229 34.3500 32.3294 30.5333 28.9263 27.4800 26.1714 24.9818 23.8957 22.9000 21.9840 21.1385 20.3556 19.6286
230 34.5000 32.4706 30.6667 29.0526 27.6000 26.2857 25.0909 24.0000 23.0000 22.0800 21.2308 20.4444 19.7143
231 34.6500 32.6118 30.8000 29.1789 27.7200 26.4000 25.2000 24.1043 23.1000 22.1760 21.3231 20.5333 19.8000
232 34.8000 32.7529 30.9333 29.3053 27.8400 26.5143 25.3091 24.2087 23.2000 22.2720 21.4154 20.6222 19.8857
233 34.9500 32.8941 31.0667 29.4316 27.9600 26.6286 25.4182 24.3130 23.3000 22.3680 21.5077 20.7111 19.9714
234 35.1000 33.0353 31.2000 29.5579 28.0800 26.7429 25.5273 24.4174 23.4000 22.4640 21.6000 20.8000 20.0571
235 35.2500 33.1765 31.3333 29.6842 28.2000 26.8571 25.6364 24.5217 23.5000 22.5600 21.6923 20.8889 20.1429
236 35.4000 33.3176 31.4667 29.8105 28.3200 26.9714 25.7455 24.6261 23.6000 22.6560 21.7846 20.9778 20.2286
237 35.5500 33.4588 31.6000 29.9368 28.4400 27.0857 25.8545 24.7304 23.7000 22.7520 21.8769 21.0667 20.3143
238 35.7000 33.6000 31.7333 30.0632 28.5600 27.2000 25.9636 24.8348 23.8000 22.8480 21.9692 21.1556 20.4000
239 35.8500 33.7412 31.8667 30.1895 28.6800 27.3143 26.0727 24.9391 23.9000 22.9440 22.0615 21.2444 20.4857
240 36.0000 33.8824 32.0000 30.3158 28.8000 27.4286 26.1818 25.0435 24.0000 23.0400 22.1538 21.3333 20.5714
241 36.1500 34.0235 32.1333 30.4421 28.9200 27.5429 26.2909 25.1478 24.1000 23.1360 22.2462 21.4222 20.6571
242 36.3000 34.1647 32.2667 30.5684 29.0400 27.6571 26.4000 25.2522 24.2000 23.2320 22.3385 21.5111 20.7429
243 36.4500 34.3059 32.4000 30.6947 29.1600 27.7714 26.5091 25.3565 24.3000 23.3280 22.4308 21.6000 20.8286
244 36.6000 34.4471 32.5333 30.8211 29.2800 27.8857 26.6182 25.4609 24.4000 23.4240 22.5231 21.6889 20.9143
245 36.7500 34.5882 32.6667 30.9474 29.4000 28.0000 26.7273 25.5652 24.5000 23.5200 22.6154 21.7778 21.0000
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14/20
2009.04 - Rev.A
Technical Note
BU7331EKN
Frequency Matrix (Analog2-7)
XIN=19.200MHz & P1×P2=8 [ P1×P2 is selectable from (1, 5, 10, or 20) ×(2, 4, 6, or 8).]
The white areas represent areas in which output is enabled. The other areas (i.e., gray areas) represent areas in which
output is disabled.
P1×P2=8
N
19
20
21
22
23
24
25
26
27
28
29
30
31
32
225 28.4211 27.0000 25.7143 24.5455 23.4783 22.5000 21.6000 20.7692 20.0000 19.2857 18.6207 18.0000 17.4194 16.8750
226 28.5474 27.1200 25.8286 24.6545 23.5826 22.6000 21.6960 20.8615 20.0889 19.3714 18.7034 18.0800 17.4968 16.9500
227 28.6737 27.2400 25.9429 24.7636 23.6870 22.7000 21.7920 20.9538 20.1778 19.4571 18.7862 18.1600 17.5742 17.0250
228 28.8000 27.3600 26.0571 24.8727 23.7913 22.8000 21.8880 21.0462 20.2667 19.5429 18.8690 18.2400 17.6516 17.1000
229 28.9263 27.4800 26.1714 24.9818 23.8957 22.9000 21.9840 21.1385 20.3556 19.6286 18.9517 18.3200 17.7290 17.1750
230 29.0526 27.6000 26.2857 25.0909 24.0000 23.0000 22.0800 21.2308 20.4444 19.7143 19.0345 18.4000 17.8065 17.2500
231 29.1789 27.7200 26.4000 25.2000 24.1043 23.1000 22.1760 21.3231 20.5333 19.8000 19.1172 18.4800 17.8839 17.3250
232 29.3053 27.8400 26.5143 25.3091 24.2087 23.2000 22.2720 21.4154 20.6222 19.8857 19.2000 18.5600 17.9613 17.4000
233 29.4316 27.9600 26.6286 25.4182 24.3130 23.3000 22.3680 21.5077 20.7111 19.9714 19.2828 18.6400 18.0387 17.4750
234 29.5579 28.0800 26.7429 25.5273 24.4174 23.4000 22.4640 21.6000 20.8000 20.0571 19.3655 18.7200 18.1161 17.5500
235 29.6842 28.2000 26.8571 25.6364 24.5217 23.5000 22.5600 21.6923 20.8889 20.1429 19.4483 18.8000 18.1935 17.6250
236 29.8105 28.3200 26.9714 25.7455 24.6261 23.6000 22.6560 21.7846 20.9778 20.2286 19.5310 18.8800 18.2710 17.7000
237 29.9368 28.4400 27.0857 25.8545 24.7304 23.7000 22.7520 21.8769 21.0667 20.3143 19.6138 18.9600 18.3484 17.7750
238 30.0632 28.5600 27.2000 25.9636 24.8348 23.8000 22.8480 21.9692 21.1556 20.4000 19.6966 19.0400 18.4258 17.8500
239 30.1895 28.6800 27.3143 26.0727 24.9391 23.9000 22.9440 22.0615 21.2444 20.4857 19.7793 19.1200 18.5032 17.9250
M
240 30.3158 28.8000 27.4286 26.1818 25.0435 24.0000 23.0400 22.1538 21.3333 20.5714 19.8621 19.2000 18.5806 18.0000
241 30.4421 28.9200 27.5429 26.2909 25.1478 24.1000 23.1360 22.2462 21.4222 20.6571 19.9448 19.2800 18.6581 18.0750
242 30.5684 29.0400 27.6571 26.4000 25.2522 24.2000 23.2320 22.3385 21.5111 20.7429 20.0276 19.3600 18.7355 18.1500
243 30.6947 29.1600 27.7714 26.5091 25.3565 24.3000 23.3280 22.4308 21.6000 20.8286 20.1103 19.4400 18.8129 18.2250
244 30.8211 29.2800 27.8857 26.6182 25.4609 24.4000 23.4240 22.5231 21.6889 20.9143 20.1931 19.5200 18.8903 18.3000
245 30.9474 29.4000 28.0000 26.7273 25.5652 24.5000 23.5200 22.6154 21.7778 21.0000 20.2759 19.6000 18.9677 18.3750
246 31.0737 29.5200 28.1143 26.8364 25.6696 24.6000 23.6160 22.7077 21.8667 21.0857 20.3586 19.6800 19.0452 18.4500
247 31.2000 29.6400 28.2286 26.9455 25.7739 24.7000 23.7120 22.8000 21.9556 21.1714 20.4414 19.7600 19.1226 18.5250
248 31.3263 29.7600 28.3429 27.0545 25.8783 24.8000 23.8080 22.8923 22.0444 21.2571 20.5241 19.8400 19.2000 18.6000
249 31.4526 29.8800 28.4571 27.1636 25.9826 24.9000 23.9040 22.9846 22.1333 21.3429 20.6069 19.9200 19.2774 18.6750
250 31.5789 30.0000 28.5714 27.2727 26.0870 25.0000 24.0000 23.0769 22.2222 21.4286 20.6897 20.0000 19.3548 18.7500
251 31.7053 30.1200 28.6857 27.3818 26.1913 25.1000 24.0960 23.1692 22.3111 21.5143 20.7724 20.0800 19.4323 18.8250
252 31.8316 30.2400 28.8000 27.4909 26.2957 25.2000 24.1920 23.2615 22.4000 21.6000 20.8552 20.1600 19.5097 18.9000
253 31.9579 30.3600 28.9143 27.6000 26.4000 25.3000 24.2880 23.3538 22.4889 21.6857 20.9379 20.2400 19.5871 18.9750
254 32.0842 30.4800 29.0286 27.7091 26.5043 25.4000 24.3840 23.4462 22.5778 21.7714 21.0207 20.3200 19.6645 19.0500
255 32.2105 30.6000 29.1429 27.8182 26.6087 25.5000 24.4800 23.5385 22.6667 21.8571 21.1034 20.4000 19.7419 19.1250
256 32.3368 30.7200 29.2571 27.9273 26.7130 25.6000 24.5760 23.6308 22.7556 21.9429 21.1862 20.4800 19.8194 19.2000
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15/20
2009.04 - Rev.A
Technical Note
BU7331EKN
When reference frequency  27MHz and if Analog1 is used:
The reference frequency can be input not only at 19.200MHz but also in the range of 5 to 48MHz (or 5 to 27MHz to use
an xtal).
For example, the following section shows a frequency matrix when a 27-MHz frequency is input.
If you want to use any other reference frequency, contact your ROHM representative.
XIN=27.000MHz & P1×P2=2 [ P1×P2 is selectable from (1, 5, 10, or 20) ×(2, 4, 6, or 8).]
The white areas represent areas in which output is enabled. The blue areas represent areas in which output is enabled
under the condition of VDD_CLK2.7 to 3.6V.
The other areas (i.e., gray areas) represent areas in which output is disabled.
P1×P2=2
M
N
4
5
6
7
8
9
10
11
12
13
14
15
16
13
43.8750 35.1000 29.2500 25.0714 21.9375 19.5000 17.5500 15.9545 14.6250 13.5000 12.5357 11.7000 10.9688
14
47.2500 37.8000 31.5000 27.0000 23.6250 21.0000 18.9000 17.1818 15.7500 14.5385 13.5000 12.6000 11.8125
15
50.6250 40.5000 33.7500 28.9286 25.3125 22.5000 20.2500 18.4091 16.8750 15.5769 14.4643 13.5000 12.6563
16
54.0000 43.2000 36.0000 30.8571 27.0000 24.0000 21.6000 19.6364 18.0000 16.6154 15.4286 14.4000 13.5000
17
57.3750 45.9000 38.2500 32.7857 28.6875 25.5000 22.9500 20.8636 19.1250 17.6538 16.3929 15.3000 14.3438
18
60.7500 48.6000 40.5000 34.7143 30.3750 27.0000 24.3000 22.0909 20.2500 18.6923 17.3571 16.2000 15.1875
19
64.1250 51.3000 42.7500 36.6429 32.0625 28.5000 25.6500 23.3182 21.3750 19.7308 18.3214 17.1000 16.0313
20
67.5000 54.0000 45.0000 38.5714 33.7500 30.0000 27.0000 24.5455 22.5000 20.7692 19.2857 18.0000 16.8750
21
70.8750 56.7000 47.2500 40.5000 35.4375 31.5000 28.3500 25.7727 23.6250 21.8077 20.2500 18.9000 17.7188
22
74.2500 59.4000 49.5000 42.4286 37.1250 33.0000 29.7000 27.0000 24.7500 22.8462 21.2143 19.8000 18.5625
23
77.6250 62.1000 51.7500 44.3571 38.8125 34.5000 31.0500 28.2273 25.8750 23.8846 22.1786 20.7000 19.4063
24
81.0000 64.8000 54.0000 46.2857 40.5000 36.0000 32.4000 29.4545 27.0000 24.9231 23.1429 21.6000 20.2500
25
84.3750 67.5000 56.2500 48.2143 42.1875 37.5000 33.7500 30.6818 28.1250 25.9615 24.1071 22.5000 21.0938
26
87.7500 70.2000 58.5000 50.1429 43.8750 39.0000 35.1000 31.9091 29.2500 27.0000 25.0714 23.4000 21.9375
27
91.1250 72.9000 60.7500 52.0714 45.5625 40.5000 36.4500 33.1364 30.3750 28.0385 26.0357 24.3000 22.7813
28
94.5000 75.6000 63.0000 54.0000 47.2500 42.0000 37.8000 34.3636 31.5000 29.0769 27.0000 25.2000 23.6250
29
97.8750 78.3000 65.2500 55.9286 48.9375 43.5000 39.1500 35.5909 32.6250 30.1154 27.9643 26.1000 24.4688
30
101.2500 81.0000 67.5000 57.8571 50.6250 45.0000 40.5000 36.8182 33.7500 31.1538 28.9286 27.0000 25.3125
31
104.6250 83.7000 69.7500 59.7857 52.3125 46.5000 41.8500 38.0455 34.8750 32.1923 29.8929 27.9000 26.1563
32
108.0000 86.4000 72.0000 61.7143 54.0000 48.0000 43.2000 39.2727 36.0000 33.2308 30.8571 28.8000 27.0000
33
111.3750 89.1000 74.2500 63.6429 55.6875 49.5000 44.5500 40.5000 37.1250 34.2692 31.8214 29.7000 27.8438
34
114.7500 91.8000 76.5000 65.5714 57.3750 51.0000 45.9000 41.7273 38.2500 35.3077 32.7857 30.6000 28.6875
35
118.1250 94.5000 78.7500 67.5000 59.0625 52.5000 47.2500 42.9545 39.3750 36.3462 33.7500 31.5000 29.5313
36
121.5000 97.2000 81.0000 69.4286 60.7500 54.0000 48.6000 44.1818 40.5000 37.3846 34.7143 32.4000 30.3750
37
124.8750 99.9000 83.2500 71.3571 62.4375 55.5000 49.9500 45.4091 41.6250 38.4231 35.6786 33.3000 31.2188
38
128.2500 102.6000 85.5000 73.2857 64.1250 57.0000 51.3000 46.6364 42.7500 39.4615 36.6429 34.2000 32.0625
39
131.6250 105.3000 87.7500 75.2143 65.8125 58.5000 52.6500 47.8636 43.8750 40.5000 37.6071 35.1000 32.9063
40
135.0000 108.0000 90.0000 77.1429 67.5000 60.0000 54.0000 49.0909 45.0000 41.5385 38.5714 36.0000 33.7500
41
138.3750 110.7000 92.2500 79.0714 69.1875 61.5000 55.3500 50.3182 46.1250 42.5769 39.5357 36.9000 34.5938
42
141.7500 113.4000 94.5000 81.0000 70.8750 63.0000 56.7000 51.5455 47.2500 43.6154 40.5000 37.8000 35.4375
43
145.1250 116.1000 96.7500 82.9286 72.5625 64.5000 58.0500 52.7727 48.3750 44.6538 41.4643 38.7000 36.2813
44
148.5000 118.8000 99.0000 84.8571 74.2500 66.0000 59.4000 54.0000 49.5000 45.6923 42.4286 39.6000 37.1250
45
151.8750 121.5000 101.2500 86.7857 75.9375 67.5000 60.7500 55.2273 50.6250 46.7308 43.3929 40.5000 37.9688
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© 2009 ROHM Co., Ltd. All rights reserved.
16/20
2009.04 - Rev.A
Technical Note
BU7331EKN
When reference frequency  13MHz and if Analog1 is used:
The reference frequency can be input not only at 19.200MHz but also in the range of 5 to 48MHz (or 5 to 27MHz to use
an xtal).
For example, the following section shows a frequency matrix when a 13-MHz frequency is input.
If you want to use any other reference frequency, contact your ROHM representative.
XIN=13.000MHz & P1×P2=2 [ P1×P2 is selectable from (1, 5, 10, or 20) ×(2, 4, 6, or 8).]
The white areas represent areas in which output is enabled. The blue areas represent areas in which output is enabled
under the condition of VDD_CLK2.7 to 3.6V.
The other areas (i.e., gray areas) represent areas in which output is disabled.
P1×P2=2
M
N
3
4
5
6
7
8
9
10
11
12
13
14
15
13
28.1667 21.1250 16.9000 14.0833 12.0714 10.5625 9.3889
8.4500
7.6818
7.0417
6.5000
6.0357
5.6333
14
30.3333 22.7500 18.2000 15.1667 13.0000 11.3750 10.1111
9.1000
8.2727
7.5833
7.0000
6.5000
6.0667
15
32.5000 24.3750 19.5000 16.2500 13.9286 12.1875 10.8333 9.7500
8.8636
8.1250
7.5000
6.9643
6.5000
16
34.6667 26.0000 20.8000 17.3333 14.8571 13.0000 11.5556 10.4000 9.4545
8.6667
8.0000
7.4286
6.9333
17
36.8333 27.6250 22.1000 18.4167 15.7857 13.8125 12.2778 11.0500 10.0455 9.2083
8.5000
7.8929
7.3667
18
39.0000 29.2500 23.4000 19.5000 16.7143 14.6250 13.0000 11.7000 10.6364 9.7500
9.0000
8.3571
7.8000
19
41.1667 30.8750 24.7000 20.5833 17.6429 15.4375 13.7222 12.3500 11.2273 10.2917 9.5000
8.8214
8.2333
20
43.3333 32.5000 26.0000 21.6667 18.5714 16.2500 14.4444 13.0000 11.8182 10.8333 10.0000 9.2857
8.6667
21
45.5000 34.1250 27.3000 22.7500 19.5000 17.0625 15.1667 13.6500 12.4091 11.3750 10.5000 9.7500
9.1000
22
47.6667 35.7500 28.6000 23.8333 20.4286 17.8750 15.8889 14.3000 13.0000 11.9167 11.0000 10.2143 9.5333
23
49.8333 37.3750 29.9000 24.9167 21.3571 18.6875 16.6111 14.9500 13.5909 12.4583 11.5000 10.6786 9.9667
24
52.0000 39.0000 31.2000 26.0000 22.2857 19.5000 17.3333 15.6000 14.1818 13.0000 12.0000 11.1429 10.4000
25
54.1667 40.6250 32.5000 27.0833 23.2143 20.3125 18.0556 16.2500 14.7727 13.5417 12.5000 11.6071 10.8333
26
56.3333 42.2500 33.8000 28.1667 24.1429 21.1250 18.7778 16.9000 15.3636 14.0833 13.0000 12.0714 11.2667
27
58.5000 43.8750 35.1000 29.2500 25.0714 21.9375 19.5000 17.5500 15.9545 14.6250 13.5000 12.5357 11.7000
28
60.6667 45.5000 36.4000 30.3333 26.0000 22.7500 20.2222 18.2000 16.5455 15.1667 14.0000 13.0000 12.1333
29
62.8333 47.1250 37.7000 31.4167 26.9286 23.5625 20.9444 18.8500 17.1364 15.7083 14.5000 13.4643 12.5667
30
65.0000 48.7500 39.0000 32.5000 27.8571 24.3750 21.6667 19.5000 17.7273 16.2500 15.0000 13.9286 13.0000
31
67.1667 50.3750 40.3000 33.5833 28.7857 25.1875 22.3889 20.1500 18.3182 16.7917 15.5000 14.3929 13.4333
32
69.3333 52.0000 41.6000 34.6667 29.7143 26.0000 23.1111 20.8000 18.9091 17.3333 16.0000 14.8571 13.8667
33
71.5000 53.6250 42.9000 35.7500 30.6429 26.8125 23.8333 21.4500 19.5000 17.8750 16.5000 15.3214 14.3000
34
73.6667 55.2500 44.2000 36.8333 31.5714 27.6250 24.5556 22.1000 20.0909 18.4167 17.0000 15.7857 14.7333
35
75.8333 56.8750 45.5000 37.9167 32.5000 28.4375 25.2778 22.7500 20.6818 18.9583 17.5000 16.2500 15.1667
36
78.0000 58.5000 46.8000 39.0000 33.4286 29.2500 26.0000 23.4000 21.2727 19.5000 18.0000 16.7143 15.6000
37
80.1667 60.1250 48.1000 40.0833 34.3571 30.0625 26.7222 24.0500 21.8636 20.0417 18.5000 17.1786 16.0333
38
82.3333 61.7500 49.4000 41.1667 35.2857 30.8750 27.4444 24.7000 22.4545 20.5833 19.0000 17.6429 16.4667
39
84.5000 63.3750 50.7000 42.2500 36.2143 31.6875 28.1667 25.3500 23.0455 21.1250 19.5000 18.1071 16.9000
40
86.6667 65.0000 52.0000 43.3333 37.1429 32.5000 28.8889 26.0000 23.6364 21.6667 20.0000 18.5714 17.3333
41
88.8333 66.6250 53.3000 44.4167 38.0714 33.3125 29.6111 26.6500 24.2273 22.2083 20.5000 19.0357 17.7667
42
91.0000 68.2500 54.6000 45.5000 39.0000 34.1250 30.3333 27.3000 24.8182 22.7500 21.0000 19.5000 18.2000
43
93.1667 69.8750 55.9000 46.5833 39.9286 34.9375 31.0556 27.9500 25.4091 23.2917 21.5000 19.9643 18.6333
44
95.3333 71.5000 57.2000 47.6667 40.8571 35.7500 31.7778 28.6000 26.0000 23.8333 22.0000 20.4286 19.0667
45
97.5000 73.1250 58.5000 48.7500 41.7857 36.5625 32.5000 29.2500 26.5909 24.3750 22.5000 20.8929 19.5000
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© 2009 ROHM Co., Ltd. All rights reserved.
17/20
2009.04 - Rev.A
Technical Note
BU7331EKN
●I/O PIN Equivalent Circuit
Pin
No.
Pin
No.
Equipment circuit
Equipment circuit
VDD_CLK VDD_CLK
VDD_SIF
1,
20
To internal
10,
13,
16
VSS_SIF
Internal signal
VSS_CLK VSS_CLK
VDD_CORE
To internal
VSS_CORE
VDD_CORE
VDD_CORE
VDD_SIF
6
To internal
19
Internal signal
VSS_CORE
VSS_CORE
VSS_SIF
VDD_CORE
VSS_SIF
7
VSS_CORE
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© 2009 ROHM Co., Ltd. All rights reserved.
18/20
2009.04 - Rev.A
Technical Note
BU7331EKN
●Notes for use
(1) Absolute Maximum Ratings
An excess in the absolute maximum ratings, such as supply voltage, temperature range of operating conditions, etc.,
can break down devices, thus making impossible to identify breaking mode such as a short circuit or an open circuit. If
any special mode exceeding the absolute maximum ratings is assumed, consideration should be given to take physical
safety measures including the use of fuses, etc.
(2) Operating conditions
These conditions represent a range within which characteristics can be provided approximately as expected. The
electrical characteristics are guaranteed under the conditions of each parameter.
(3) Reverse connection of power supply connector
The reverse connection of power supply connector can break down ICs. Take protective measures against the
breakdown due to the reverse connection, such as mounting an external diode between the power supply and
BU7331EKN’s power supply terminal.
(4) Power supply line
Design PCB pattern to provide low impedance for the wiring between the power supply and the GND lines.In this regard,
for the digital block power supply and the analog block power supply, even though these power supplies has the same
level of potential, separate the power supply pattern for the digital block from that for the analog block, thus suppressing
the diffraction of digital noises to the analog block power supply resulting from impedance common to the wiring patterns.
For the GND line, give consideration to design the patterns in a similar manner.
Furthermore, for all power supply terminals to ICs, mount a capacitor between the power supply and the GND terminal.
At the same time, in order to use an electrolytic capacitor, thoroughly check to be sure the characteristics of the capacitor
to be used present no problem including the occurrence of capacity dropout at a low temperature, thus determining the
constant.
(5) GND voltage
Make setting of the potential of the GND terminal so that it will be maintained at the minimum in any operating state.
Furthermore, check to be sure no terminals are at a potential lower than the GND voltage including an actual electric
transient.
(6) Short circuit between terminals and erroneous mounting
In order to mount ICs on a set PCB, pay thorough attention to the direction and offset of BU7331EKN. Erroneous
mounting can break down BU7331EKN. Furthermore, if a short circuit occurs due to foreign matters entering between
terminals or between the terminal and the power supply or the GND terminal, BU7331EKN can break down.
(7) Operation in strong electromagnetic field
Be noted that using ICs in the strong electromagnetic field can malfunction them.
(8) Inspection with set PCB
On the inspection with the set PCB, if a capacitor is connected to a low-impedance IC terminal, BU7331EKN can suffer
stress. Therefore, be sure to discharge from the set PCB by each process. Furthermore, in order to mount or dismount
the set PCB to/from the jig for the inspection process, be sure to turn OFF the power supply and then mount the set PCB
to the jig. After the completion of the inspection, be sure to turn OFF the power supply and then dismount it from the jig.
In addition, for protection against static electricity, establish a ground for the assembly process and pay thorough
attention to the transportation and the storage of the set PCB.
(9) Input terminals
In terms of the construction of IC, parasitic elements are inevitably formed in relation to potential. The operation of the
parasitic element can cause interference with circuit operation, thus resulting in a malfunction and then breakdown of the
input terminal. Therefore, pay thorough attention not to handle the input terminals, such as to apply to the input terminals
a voltage lower than the GND respectively, so that any parasitic element will operate. Furthermore, do not apply a
voltage to the input terminals when no power supply voltage is applied to BU7331EKN. In addition, even if the power
supply voltage is applied, apply to the input terminals a voltage lower than the power supply voltage or within the
guaranteed value of electrical characteristics.
(10)Ground wiring pattern
If small-signal GND and large-current GND are provided, It will be recommended to separate the large-current GND
pattern from the small-signal GND pattern and establish a single ground at the reference point of the set PCB so that
resistance to the wiring pattern and voltage fluctuations due to a large current will cause no fluctuations in voltages of the
small-signal GND. Pay attention not to cause fluctuations in the GND wiring pattern of external parts as well.
(11)External capacitor
In order to use a ceramic capacitor as the external capacitor, determine the constant with consideration given to a
degradation in the nominal capacitance due to DC bias and changes in the capacitance due to temperature, etc.
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19/20
2009.04 - Rev.A
Technical Note
BU7331EKN
●Ordering part number
B
U
7
Part No.
3
3
1
E
Part No.
K
N
-
Package
EKN:HQFN20V
E
2
Packaging and forming specification
E2: Embossed tape and reel
HQFN20V
11
10
20
6
1
5
0.05
0.22±0.05
0.22±0.05
M
Tape
Embossed carrier tape (with dry pack)
Quantity
2500pcs
Direction
of feed
0.95MAX
16
+0.03
0.02 -0.02
4.0±0.1
4.2±0.1
15
E2
The direction is the 1pin of product is at the upper left when you hold
( reel on the left hand and you pull out the tape on the right hand
)
0.05
(2.1)
0.5
(0
.2
2)
<Tape and Reel information>
4.2±0.1
4.0±0.1
(1.1)
5)
.3
(2.1)
(0
3+0.1
0.6 -0.3
)
.5
(0
Notice :
Do not use the dotted line area
for soldering
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© 2009 ROHM Co., Ltd. All rights reserved.
(Unit : mm)
1pin
Reel
20/20
Direction of feed
∗ Order quantity needs to be multiple of the minimum quantity.
2009.04 - Rev.A
Notice
Notes
No copying or reproduction of this document, in part or in whole, is permitted without the
consent of ROHM Co.,Ltd.
The content specified herein is subject to change for improvement without notice.
The content specified herein is for the purpose of introducing ROHM's products (hereinafter
"Products"). If you wish to use any such Product, please be sure to refer to the specifications,
which can be obtained from ROHM upon request.
Examples of application circuits, circuit constants and any other information contained herein
illustrate the standard usage and operations of the Products. The peripheral conditions must
be taken into account when designing circuits for mass production.
Great care was taken in ensuring the accuracy of the information specified in this document.
However, should you incur any damage arising from any inaccuracy or misprint of such
information, ROHM shall bear no responsibility for such damage.
The technical information specified herein is intended only to show the typical functions of and
examples of application circuits for the Products. ROHM does not grant you, explicitly or
implicitly, any license to use or exercise intellectual property or other rights held by ROHM and
other parties. ROHM shall bear no responsibility whatsoever for any dispute arising from the
use of such technical information.
The Products specified in this document are intended to be used with general-use electronic
equipment or devices (such as audio visual equipment, office-automation equipment, communication devices, electronic appliances and amusement devices).
The Products specified in this document are not designed to be radiation tolerant.
While ROHM always makes efforts to enhance the quality and reliability of its Products, a
Product may fail or malfunction for a variety of reasons.
Please be sure to implement in your equipment using the Products safety measures to guard
against the possibility of physical injury, fire or any other damage caused in the event of the
failure of any Product, such as derating, redundancy, fire control and fail-safe designs. ROHM
shall bear no responsibility whatsoever for your use of any Product outside of the prescribed
scope or not in accordance with the instruction manual.
The Products are not designed or manufactured to be used with any equipment, device or
system which requires an extremely high level of reliability the failure or malfunction of which
may result in a direct threat to human life or create a risk of human injury (such as a medical
instrument, transportation equipment, aerospace machinery, nuclear-reactor controller,
fuel-controller or other safety device). ROHM shall bear no responsibility in any way for use of
any of the Products for the above special purposes. If a Product is intended to be used for any
such special purpose, please contact a ROHM sales representative before purchasing.
If you intend to export or ship overseas any Product or technology specified herein that may
be controlled under the Foreign Exchange and the Foreign Trade Law, you will be required to
obtain a license or permit under the Law.
Thank you for your accessing to ROHM product informations.
More detail product informations and catalogs are available, please contact us.
ROHM Customer Support System
http://www.rohm.com/contact/
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R0039A