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AT89C5132-ROTUL bảng dữ liệu(PDF) 14 Page - ATMEL Corporation

tên linh kiện AT89C5132-ROTUL
Giải thích chi tiết về linh kiện  USB Microcontroller with 64K Bytes Flash Memory
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nhà sản xuất  ATMEL [ATMEL Corporation]
Trang chủ  http://www.atmel.com
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AT89C5132-ROTUL bảng dữ liệu(HTML) 14 Page - ATMEL Corporation

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14
4173D–USB–02/06
AT89C5132
Figure 6-4.
PLL Block Diagram and Symbol
Figure 6-5.
PLL Filter Connection
6.3.2
PLL Programming
The PLL is programmed using the flow shown in Figure 6-6. As soon as clock generation is
enabled, the user must wait until the lock indicator is set to ensure the clock output is stable. The
PLL clock frequency will depend on the audio interface clock frequencies.
Figure 6-6.
PLL Programming Flow
6.4
Registers
Table 1. CKCON Register
PLLEN
PLLCON.1
N6:0
N divider
R divider
VCO
PLLclk
OSCclk
R
1
+
()
×
N1
+
-----------------------------------------------
=
OSC
CLOCK
PFLD
PLOCK
PLLCON.0
PFILT
CHP
Vref
Up
Down
R9:0
PLL
CLOCK
PLL Clock Symbol
PLL
Clock
V
SS
PFILT
R
C1
C2
V
SS
PLL
Programming
Configure Dividers
N6:0 = xxxxxxb
R9:0 = xxxxxxxxxxb
Enable PLL
PLLRES = 0
PLLEN = 1
PLL Locked?
PLOCK = 1?



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