BU2394KN_08 Datasheet, PDF (14/17 Pages) Rohm – 3ch Clock Generator for Digital Cameras

●BU2396KN Application Circuit / Description of Terminal
0.1uF
for Video
27.000000MHz
for USB
12.000000MHz
XIN 4
XOUT 5
XTAL
OSC
TGCLK_EN 10
TGCLK_SEL2 7
1：A V DD
0.1uF
2：A V DD
3：A V SS
4：XIN
R
5：XOUT
BU2396KN
VQFN-20
15：VDD1
14：VDD1
13：VSS1
12：VCLK_EN
11：TGCLK
0.1uF
TGCLK_SEL1 8
TGCLK_PD 9
for CCD
36.000000MHz
30.000000MHz
24.000000MHz
VCLK_PD ²⁰
VCLK_EN 12
Fig.77
12.000000MHz
16 ^UCLK
DATA
PLL1
30.000000MHz
24.000000MHz
36.000000MHz
1／6
11 TGCLK
PLL2
1／8
27.000000MHz
19 ^VCLK
Fig.78
Description of Terminal
PIN No.
PIN NAME
Function
1
AVDD
Analog power source
2
AVDD
Analog power source
3
AVSS
Analog GND
4
XIN
Crystal IN
5
XOUT
Crystal OUT
6
TEST
TEST pin, normally open, equipped with pull-down
7
TGCLK_SEL2 TGCLK frequency selection, equipped with pull-up
8
TGCLK_SEL1 TGCLK frequency selection, equipped with pull-up
9
TGCLK_PD
TGCLK Power-Down control, H:enable, L:Power-Down, equipped with pull-down
10
TGCLK_EN
TGCLK output control, H: Enable, L: Output fixed to L, equipped with pull-down
11
TGCLK
36M, 30M, 24M output
12
VCLK_EN
VCLK output control, H:enable, L: Output fixed to L, equipped with pull-down
13
VSS1
TGCLK,UCLK & Internal digital GND
14
VDD1
TGCLK,UCLK & Internal digital power supply
15
VDD1
TGCLK,UCLK & Internal digital power supply
16
UCLK
12M output
17
VSS2
VCLK GND
18
VDD2
VCLK power source
19
VCLK
27M output
20
VCLK_PD
VCLK Power-Down control, H:enable, L:Power-Down, equipped with pull-down
Note) Basically, mount ICs to the substrate for use. If the ICs are not mounted to the substrate, the characteristics of ICs may
not be fully demonstrated.
Mount 0.1uF as bypass capacitors in the vicinity of the IC pins between 1&2 PIN and 3PIN, 13PIN and 14&15PIN, and
17PIN and 18PIN, respectively.
※Even though we believe that the example of the application circuit is worth of a recommendation, please be sure to
thoroughly recheck the characteristics before use.
※As to the jitters, the TYP values vary with the substrate, power supply, output loads, noises, and others. Besides, for the
use, the operating margin should be thoroughly checked.
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