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參數(shù)資料
| 型號： | MC44871DTB |
| 廠商： | MOTOROLA INC |
| 元件分類： | 模擬信號調理 |
| 英文描述： | PLL TUNING CIRCUIT WITH HIGH SPEED I2C BUS AND 30 V TUNING SUPPLY |
| 中文描述： | SPECIALTY ANALOG CIRCUIT, PDSO16 |
| 封裝： | PLASTIC, TSSOP-16 |
| 文件頁數(shù)： | 8/12頁 |
| 文件大小： | 198K |
| 代理商： | MC44871DTB |
MC44871
8
MOTOROLA ANALOG IC DEVICE DATA
The Two Permissible Protocols with Five Bytes
CA_Chip Address
1
1
0
0
0
0/1
0/1
0
ACK
éééééééééééééééééééééé
éééééééééééééééééééééé
1
T14
T13
T12
T11
CO_Control Information
T10
T9
T8
ACK
BA_Band Information
X
X
X
B4
X
B2
B1
B0
ACK
éééééééééééééééééééééé
éééééééééééééééééééééé
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
éééééééééééééééééééééé
éééééééééééééééééééééé
FM_Frequency Information
FL_Frequency Information
N7
N6
N5
N4
N3
N2
N1
N0
ACK
éééééééééééééééééééééé
éééééééééééééééééééééé
CO_Control Information
BA_Band Information
X
X
X
B4
X
B2
B1
B0
ACK
I2C Read Mode Format
The incoming information consists of the chip address
byte in read mode (odd address). The device then answers
with an acknowledge followed by a byte containing lock and
ADC information. There is no ACK pulse sent after this byte.
1_STA
ADC_LO =
CA
ADC_LO
ADC and Lock information
I2C Read Format
CA_Chip Address
éééééééééééééééééééééé
éééééééééééééééééééééé
ADC_LO
Definition of the Bits for Test and Features
Bits B0, B1, B2: Control the PNP Band Buffers
B0, B1, B2 = 0
Buffer is “Off”, Output Low
= 1
Buffer is “On”, Output High
Bit B4: Controls the NPN Band Buffer
B4 = 0
Buffer is “Off”, Output High
= 1
Buffer is “On”, Output Low
Bit T8: Controls the Operational Amplifier Output
T8
Operation
T8 = 0
Operational Amplifier Normal Operation
= 1
Output State of Operational Amplifier
Switched Off
Output Pulls High through External Resistor
Bit T10, T11: Control the Reference Divider
T10
T11
Divider Ratio
0
0
512
0
1
1024
1
0
1024
1
1
512
Bit T9, T12: Control the Phase Comparator
T9
T12
Function
0
0
Upper Source Only
0
1
Lower Source Only
1
0
Normal Operation
1
1
High Impedance
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