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參數(shù)資料
| 型號(hào)： | SC9318FB |
| 廠商： | 杭州士景電子有限公司 |
| 英文描述： | DIGITAL TUNING SYSTEM |
| 中文描述： | 數(shù)字調(diào)諧系統(tǒng) |
| 文件頁(yè)數(shù)： | 10/36頁(yè) |
| 文件大小： | 671K |
| 代理商： | SC9318FB |
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Silan
Semiconductors
SC9318-033
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 1.0 2002-01-16
10
(Continued)
Pin
No.
Symbol
Pin Name
Internal
Connection
Description
48
TEST
TEST mode
control input
R
I
Input pin used for controlling TEST mode. High
level indicates TEST mode, while low level
indicates normal operation. The pin is normally
used at low level or no-connection (NC). (A
pull-down resistor is built-in).
50
IF
IN
/IN
IF signal
input/Input
port
R
fIN2
IF counter’s IF signal input for counting the IF
signals of the FM and AM bands and detecting
the automatic stop position.
The input frequency is between 0.35~12MHz
(0.2V
P-P
(Min)). A built-in input amp and C
coupling allow operation at low-level input.
The IF counter is a 20 bit counter with optional
gate times of 1, 4, 16, and 64ms. 20 bit of data
can be readily stored in memory.
This input pin can be programmed for use as
an input port (IN port). CMOS input is used
when the pin is set as an IN port.
51
DO1/OT
Phase
comparison
output /Output
port
52
DO2
Phase
comparison
output
PLL’s phase comparison tri-state output pins.
When the programmable counter’s prescaler
output is higher than the reference frequency,
output is at high level. When output is lower
than the reference frequency, high impedance
output is obtained.
Because DO1 and DO2 are output in parallel,
optimal filter constants can be designed for the
FM/VHF and AM bands. Pin DO1 can be
programmed
to
high
impedance
or
programmed as an output port (OT). Thus the
pins can be used to improve lock-up time or
used as output ports.
(To be continued)
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| SC9318FB-033 | 制造商:SILAN 制造商全稱:Silan Microelectronics Joint-stock 功能描述:DTS MICROCONTROLLER FOR PORTABLE RADIO RECEIVER |
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