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參數(shù)資料
| 型號(hào)： | LA17000M |
| 廠商： | Sanyo Electric Co.,Ltd. |
| 英文描述： | Tuner System IC with Built-in PLL for Car Audio Applications |
| 中文描述： | 調(diào)諧器集成電路與系統(tǒng)專為汽車音響應(yīng)用的鎖相環(huán) |
| 文件頁數(shù)： | 16/54頁 |
| 文件大?。?/td> | 830K |
| 代理商： | LA17000M |
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LA17000M
No. 6522-16/54
Continued from preceding page.
Symbol
PD1
Pin No.
20
0
Description
Main
charge
pump
output
Function
Pin Circuit
PDS
22
HCTR
32
XBUF
23
This is the PLL charge pump output pin.
When the frequency of the local oscillation
signal frequency is divided by N is higher than
the reference frequency, a high level signal is
output from the PD1 pin. When the frequency
is lower, a low level signal is output. If the
frequencies match, the pin goes to high
impedance.
A high-speed lockup circuit can be formed by
using this pin in combination with the main
charge pump.
For details, refer to page that describes the
charge pump configuration.
Serial data: HCTR is selected if CTS1 = 1 is
set.
The input frequency is 0.4 to 25 MHz.
The signal is passed through to the general-
purpose counter internally, via the 1/2
frequency divider. An integrating count can
also be kept.
The count result is output from the MSB of
the general-purpose counter through the
output pin DO.
For details, refer to page that describes the
general-purpose counter configuration.
Serial data: Prohibited when HCTR = 0.
This is the output buffer for the crystal
oscillator circuit.
Serial data: When XB = 1 is set, the output
buffer operates and the crystal oscillator
signal (pulse) is output.
When XB = 0, this pin outputs a low level.
(When a power-on reset is executed, XB = 0
and the output buffer is fixed at the low level.)
Sub-charge
pump
output
General-
purpose
counter
X
’
tal
oscillator
buffer
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