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參數(shù)資料
| 型號： | UPD63210L |
| 廠商： | NEC Corp. |
| 英文描述： | 16-BIT D/A CONVERTER WITH BUILT-IN DIGITAL FILTER FOR AUDIO |
| 中文描述： | 16位D /一個內(nèi)置轉(zhuǎn)換器，在數(shù)字的音頻過濾器 |
| 文件頁數(shù)： | 8/18頁 |
| 文件大?。?/td> | 141K |
| 代理商： | UPD63210L |
μ
PD63210, 63210L
8
3. OPERATION
3.1 Operation Clock
(1) Selection of system clocks
System clocks are selected by the CKSEL (No.6) pin.
Table 3-1. Selection of System Clocks
(2) Generation of operation clock
The clock required for internal operation can be generated by configuring a crystal oscillator circuit as shown
in Figure 3-1.
Figure 3-1. Crystal Oscillator Circuit Configuration
As in Figure 3-2, the clock can also be generated by supplying a system clock from outside to the XTI (No.4)
pin. The system clock waveform at this time must satisfy the conditions in the electrical specifications (such as
V
IH
, V
IL
under DC characteristics; and t
MCK
, t
MWH
M, t
MWL
under AC characteristics).
Figure 3-2. Configuration When Providing System Clock Externally
System Clock
384fs
512fs
CKSEL
L
H
To dynamic generator
MCKO
XTO
XTI
970 k
Crystal
20 to 30 pF
To dynamic generator
MCKO
XTO
XTI
External system clock input
(No connection required)
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