參數(shù)資料
型號(hào)： TC9324F
廠商： Toshiba Corporation
英文描述： Single-Chip DTS Microcontroller (DTS-20)
中文描述： 單芯片微丘（丘- 20）
文件頁(yè)數(shù)： 8/101頁(yè)
文件大?。?/td> 1831K
代理商： TC9324F
TC9324F
2002-02-08
8
Pin No.
Symbol
Pin Name
Function and Operation
Remarks
70
71
IF
IN1
/IN1
IF
IN2
/IN2
IF signal inputs
/input port
IF signal input pins for the IF counter
to count the IF signals of the FM and
AM bands and detect the automatic
stop position.
The input frequency is in the range
0.3 to 20 MHz. A built-in input amp
and capacitive coupling support
low-amplitude operation.
The IF counter is a 20-bit counter with
selectable gate times of 1, 4, 16, and
64 ms. 20 bits of data can be easily
stored in memory. In Manual mode,
the gates can be switched on and off
by instruction.
These input pins can also be
programmed as an input port (IN
port). At that time, they become
CMOS inputs and the clocks of those
inputs can be counted using the IF
counter.
Note: Pins set as IF input go Low in
PLL Off mode.
73
FMIN
FM local oscillation
signal input
74
AMIN
AM local oscillation
signal input
Programmable counter input pins for
the FM/AM band.
Their input mode can be switched by
software among 1/2
+
pulse swallow
(VHF/FM) mode for FM input, and
pulse swallow (HF) or direct division
(LF) mode for AM input.
The local oscillation output
(voltage-controlled oscillator or V
CO
output) is normally input at the
following frequencies: 50 to 230 MHz
in VHF mode, 50 to 140 MHz in FM1
mode, 10 to 60 MHz in FM2 mode, 1
to 30 MHz in HF mode, and 0.5 to 20
MHz in LF mode.
A built-in input amp and capacitive
coupling support low-amplitude
operation.
Note: In PLL Off mode or when the
pins are not set for input, the
input goes to high impedance.
75
VPLL
PLL constant voltage
output
Constant voltage output for the PLL.
The PLL constant voltage is used as
the power supply for the PLL and IF
counter. In PLL On mode, the
constant voltage power supply is 3.55
V (typ.). In PLL Off mode, the V
DD
is
output. Connecting a capacitor (0.1
μ
F, 10
μ
F typ.) stabilizes the power
supply.
V
DD
RFIN
V
DD
RFIN
V
DD
RFIN
VPLL
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