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參數(shù)資料
| 型號： | AMIS49587C5871G |
| 廠商： | ON Semiconductor |
| 文件頁數(shù)： | 22/55頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC MODEM PLC 50/60MHZ 28PLCC |
| 標準包裝： | 37 |
| 波特率： | 可選 |
| 電源電壓： | 3 V ~ 3.6 V |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 28-LCC（J 形引線） |
| 供應商設備封裝： | 28-PLCC（11.51x11.51） |
| 包裝： | 管件 |
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AMIS49587
http://onsemi.com
29
6.4.3 Serial Communication Interface Physical Layer
Description
The following pins control the serial communication
interface.
TXD: Transmit data output.
It is the data output of the AMIS49587 and the input of the
application micro controller.
RXD: Receive data input.
It is the data input of the AMIS49587 and the output of the
application micro controller.
T_REQ:Transmit Request input
Request for data transmission received from the application
micro controller.
BR0, BR1: Baud rate selection inputs.
These pins are externally strapped to a value or controlled by
the external application micro controller.
Table 28. BR1, BR0 BAUD RATES
BR1
BR0
SCI Baud Rate
0
4800
0
1
9600
1
0
19200
1
38400
tBIT
IDLE (mark)
LSB
MSB
IDLE (mark)
tBIT
8 data bits
1 character
D0
Start
D1
D2
D3
D4
D5
D6
D7
Stop
Figure 25. Data Format
6.4.4 Arbitration and Transfer
In order to avoid collisions between the data sent by the
AMIS49587 and the application micro controller, the
AMIS49587 is chosen as the transmitting controller. This
means that when there is no local transfer, the AMIS49587
can initiate a local communication without taking account of
the application micro controller state. On the other hand,
when the application micro controller wants to send data
(using a local frame), it must first send a request for
communication through the local input port named T_REQ
(Transmitting Request). Then the AMIS49587 answers
with a status message.
6.4.5 Transfer from Application Microcontroller to
AMIS49587
When the application micro controller wants to initiate a
local transfer, it must pull down the T_REQ signal. The
AMIS49587 answers within the tPOLL delay with the status
message in which the application micro controller can read
if the communication channel is available. If the
communication is possible, the application micro controller
can start to send its local frame within the tSR delay. It should
pull up the T_REQ signal as soon as the first character (STX)
has been sent. If the beginning of the local frame is not
received before the tSR delay was issued, the AMIS49587
ignores the local frame. At the end of the data reception sent
by the application micro controller on the RxD line, the
AMIS49587 sends a byte on the TxD line in order to inform
about the status of the transmitting <ACK> (=0x06) or
<NAK> (=0x15).
Remark: If the application micro controller only wants to
know the state of the AMIS49587, it has just to pull up the
T_REQ signal after the reception of the status message.
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| AMIS49587C5871R | 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:Power Line Carrier Modem |
| AMIS49587C5871RG | 功能描述:電信線路管理 IC C587- NAF- AMIS49587 RoHS:否 制造商:STMicroelectronics 產(chǎn)品:PHY 接口類型:UART 電源電壓-最大:18 V 電源電壓-最小:8 V 電源電流:30 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風格:SMD/SMT 封裝 / 箱體:VFQFPN-48 封裝:Tray |
| AMIS49587C5872G | 功能描述:電信線路管理 IC PLC MODEM 2400BAUD RoHS:否 制造商:STMicroelectronics 產(chǎn)品:PHY 接口類型:UART 電源電壓-最大:18 V 電源電壓-最小:8 V 電源電流:30 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風格:SMD/SMT 封裝 / 箱體:VFQFPN-48 封裝:Tray |
| AMIS49587C5872RG | 功能描述:電信線路管理 IC PLC MODEM 2400BAUD RoHS:否 制造商:STMicroelectronics 產(chǎn)品:PHY 接口類型:UART 電源電壓-最大:18 V 電源電壓-最小:8 V 電源電流:30 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風格:SMD/SMT 封裝 / 箱體:VFQFPN-48 封裝:Tray |
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