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參數(shù)資料
| 型號(hào)： | MC44829 |
| 廠商： | Motorola, Inc. |
| 英文描述： | TV AND VCR I2C PLL TUNING CIRCUIT WITH 1.3 GHz PRESCALER AND MIX/OSC DECODER |
| 中文描述： | 電視機(jī)和錄像機(jī)的I2C鎖相環(huán)調(diào)諧電路與1.3 GHz的分頻器和混合/振蕩器解碼器 |
| 文件頁數(shù)： | 6/10頁 |
| 文件大?。?/td> | 137K |
| 代理商： | MC44829 |
MC44829
6
MOTOROLA ANALOG IC DEVICE DATA
Figure 5 shows the five bytes of information that are
needed for circuit operation: there is the chip address, two
bytes of control and band information and two bytes of
frequency information.
After the chip address, two or four data bytes may be
received: if three data bytes are received the third data byte
is ignored.
If five or more data bytes are received the fifth and
following data bytes are ignored and the last acknowledge
pulse is sent at the end of the fourth data byte.
The first and the third data bytes contain a function bit
which allows the IC to distinguish between frequency
information and control plus band information.
Frequency information is preceded by a Logic “0”. If the
function bit is Logic “1” the two following bytes contain control
and band information. The first data byte, shifted after the
chip address, may be byte CO or byte FM.
The two permissible bus protocols with five bytes are
shown in Figure 5.
The Data and Clock inputs (Pins 10 and 11) are high
impedance when the supply voltage VCC1 is between 0 and
5.5 V.
Chip Address
The chip address is programmable by Pin 9 (CA – Address
Select).
CA – Pin 9
Address (HEX.)
–0.04 VCC1 to 0.1 VCC1
Open or 0.2 VCC1 to 0.3 VCC1
0.42 VCC1 to 0.75 VCC1
0.9 VCC1 to 1.2 VCC1
C0
C2
C4
C6
Figure 5. Definition of Bytes
CA_Chip Address
ééééééééééééééééééééééé
ééééééééééééééééééééééé
1
T14
T13
T12
T11
CO_Information
T10
T9
T8
ACK
BA_Band Information
X
B6
B5
B4
X
X
X
X
ACK
ééééééééééééééééééééééé
ééééééééééééééééééééééé
0
N14
N13
N12
N11
FM_Frequency Information
N10
N9
N8
ACK
FL_Frequency Information
N7
N6
N5
N4
N3
N2
N1
N0
ACK
CA_Chip Address
1
1
0
0
0
0/1
0/1
0
ACK
ééééééééééééééééééééééé
ééééééééééééééééééééééé
0
N14
N13
N12
N11
FM_Frequency Information
N10
N9
N8
ACK
FL_Frequency Information
N7
ééééééééééééééééééééé
ééééééééééééééééééééééé
1
T14
T13
T12
T11
N6
N5
N4
N3
N2
N1
N0
ACK
ééééééééééééééééééééééé
é
é
CO_Information
T10
T9
T8
ACK
BA_Band Information
X
B6
B5
B4
X
X
X
X
ACK
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