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参数资料
| 型号： | YMU757B-QZ |
| 元件分类： | 音频合成 |
| 英文描述： | TONE/MUSIC SYNTHESIZER, PQCC20 |
| 封装： | LEAD FREE, QFN-20 |
| 文件页数： | 13/43页 |
| 文件大小： | 990K |
| 代理商： | YMU757B-QZ |
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YMU757B
-20-
$39h
Clock setting
Default: 0000h
Index
b15
b14
b13
b12
b11
b10
b9
b8
b7
b6
b5
b4
b3
b2
b1
b0
$39h
0
CLKSET
When clock is set in programmable mode, the frequency of clock which it is inputted from the CLK_I terminal is set.
Complete establishment before pronounce.
Even if clock of which frequency is being inputted during resetting, it is OK.
As for the details of the establishment of clock, which see "about establishment of clock frequency".
CLKSET [8:0]
Clock frequency(MHz)
000000000b
(Preset mode)
000000001b
Prohibition
:
000101111b
Prohibition
000110000b
2.684658000
000110001b
2.740588375
:
111110001b
27.797396375
111110010b
27.853326750
111110011b
Prohibition
:
111111111b
Prohibition
The value can be set to CLKSET are “000000000b", from "000110000b" to "111110010b".
If set value except for it, movement of LSI isn’t guaranteed.
Value to establish in CLKSET can be found by using the following ceremony.
CLKSET = Clock frequency [KHz] / 447.443 * 8
For example, when clock frequency is 3MHz, it becomes the following.
CLKSET = 3000 / 447.443 * 8 is about 54 = 000110110b
And, clock frequency is as follows.
Clock frequency [kHz] = 54 * 447.443 / 8 = 3020.24[kHz] = 3.02024[MHz]
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