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參數(shù)資料
| 型號： | 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） |
| 文件頁數(shù)： | 50/101頁 |
| 文件大?。?/td> | 1831K |
| 代理商： | TC9324F |
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TC9324F
2002-02-08
50
IF Counter
This is a 20-bit general-purpose intermediate frequency (IF) counter used for such purposes as counting
the FM or AM intermediate frequency and detecting the auto-stop signal during auto tuning.
The FMin/AMin input can be input via the prescaler to the IF counter. The IF counter can also be used
for detecting the reception frequency by measuring the analog tuner’s VCO.
. IF Counter Control Port, Data Port
Note: When set as an input port, the frequency can be detected by inputting CMOS input to the IF counter.
Note: If the IF counter input is set to prescaler input, when setting the pulse swallow method, the 1/1516
prescaler is fixed to 1/16 division and this frequency is input to the IF counter.
Note: When the IF counter is set for division operations, the upper 8-bit counter is input from the INTR2 pin.
However, gate time (Auto mode) cannot be set for these upper eight bits only. To reset this counter, set
the
STP
STA/
bit to 1.
Y1
Y2
Y4
Y8
φ
L18P1
STP
STA/
MANUAL
G0
G1
Time selection for frequency measuring gate
(measuring time)
G0
G1
Gate time
0
0
1 ms
1
0
4 ms
0
1
16 ms
1
1
64 ms
Frequency measuring auto/manual mode selection
0: Auto mode (Auto mode uses the above gate times for measuring.)
1: Manual mode (the
STP
STA/
bit is used to start and stop measuring.)
IF counter start/stop bit
0: Stops counter.
1: Starts counter.
Y1
Y2
Y4
Y8
φ
L19P2
IF counter
split
Prescaller
IN
Sets FMin/AMin prescaler input to IF counter
0: IFin pin input
1: FMin/AMin pin input
Sets IF counter division operation
0: IF counter 20-bit operation
1: Input from INTR2 pin to upper 8 bits of IF counter
Y1
Y2
Y4
Y8
φ
L17P1
2
IF1/
*
IN1
IF1/
IN2
IF2/
IF input/input port selection
0: Input port
1: IF input
IF input selection
0: IFin2 input
1: IFin1 input
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| TC9328AF | 制造商:TOSHIBA 制造商全稱:Toshiba Semiconductor 功能描述:Portable Audio DTS Controller (DTS-21) |
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