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參數(shù)資料
| 型號： | T4258NFNG3 |
| 廠商： | ATMEL CORP |
| 元件分類： | 接收器 |
| 英文描述： | AM/FM, AUDIO SINGLE CHIP RECEIVER, PDSO44 |
| 封裝： | SSOP-44 |
| 文件頁數(shù)： | 13/38頁 |
| 文件大?。?/td> | 443K |
| 代理商： | T4258NFNG3 |
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20
T4258N
4566B–AUDR–02/04
AM Noise Blanker
The AM Noise Blanker of the T4258N can be activated by bit 5. The noise peak is
detected in the field strength of the first IF and if the disturbance exceeds the level
defined by the bits 85 to 87, the signal is muted at the second IF.
3-wire Bus Description
The register settings of the T4258N are programmed by a 3-wire bus protocol. The bus
protocol consists of separate commands. A defined number of bits are transmitted
sequentially during each command.
One command is used to program all bits of one register. The different registers avail-
able (see Table 36 on page 22) are addressed by the length of the command (number of
transmitted bits) and by three address bits that are unique for each register of a given
length. 8-bit registers are programmed by 8-bit commands and 24-bit registers are pro-
grammed by 24-bit commands.
Each bus command starts with a rising edge on the enable line (EN) and ends with a
falling edge on EN. EN has to be kept HIGH during the bus command.
The sequence of transmitted bits during one command starts with the LSB of the first
byte and ends with the MSB of the last byte of the register addressed. The DATA is
evaluated at the rising edges of CLK. The number of LOW to HIGH transitions on CLK
during the HIGH period of EN is used to determine the length of the command.
The bus protocol and the register addressing of the T4258N are compatible to the
addressing used in the U4256BM. That means both the T4258N and U4256BM can
be operated on the same 3-wire bus as shown in the application circuit (Figure 20 on
Table 34. AM Noise Blanker Activation
AM Noise Blanker
Bit 5
Off
0
On
1
Table 35. Sensitivity of AM Noise Blanker
AM Noise Blanker Sensitivity
Bit 87
Bit 86
Bit 85
Low
0
.....
...
Normal
0
1
...
High
1
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參數(shù)描述 |
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| T425-M | 制造商:NORTH SAFETY PRODUCTS 功能描述:GLOVE SENSITASL POWDER M BX100 制造商:North Safety Products USA 功能描述:GLOVE, SENSITASL, POWDER, M, BX100 |
| T425PF-L | 制造商:NORTH SAFETY PRODUCTS 功能描述:GLOVE SENSITASK PF L BX100 制造商:North Safety Products USA 功能描述:GLOVE, SENSITASK, PF, L, BX100 制造商:NORTH SAFETY PRODUCTS 功能描述:GLOVE, SENSITASK, PF, L, BX100; Safety Category:EN374-1:2003, EN420:2003; Glove Style:Full; Glove Size:L; Glove Colour:White; Glove Material:Latex; Colour:Natural; Design Category:Intermediate; Material:Latex Rubber; Size:L ;RoHS Compliant: NA |
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