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參數(shù)資料
| 型號： | 101-0814 |
| 廠商： | Rabbit Semiconductor |
| 文件頁數(shù)： | 26/94頁 |
| 文件大?。?/td> | 0K |
| 描述： | COMPUTER SNG BD BL1810 512K SRAM |
| 標準包裝： | 10 |
| 系列： | SBC |
| 模塊/板類型： | 單板計算機模塊 |
| 適用于相關(guān)產(chǎn)品： | BL1810 |
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Jackrabbit (BL1800)
3.5 Serial Communication
The Jackrabbit has two RS-232 (3-wire) serial channels, one RS-485 serial channel, and
one synchronous CMOS serial channel.
3.5.1 RS-232
The Jackrabbit’s two RS-232 serial channels are connected to an RS-232 transceiver, U4,
an industry-standard MAX232 chip. U4 provides the voltage output, slew rate, and input
voltage immunity required to meet the RS-232 serial communication protocol. Basically,
the chip translates the Rabbit 2000’s 0 V to +Vcc signals to ±10 V. Note that the polarity is
reversed in an RS-232 circuit so that +5 V is output as –10 V and 0 V is output as +10 V.
U4 also provides the proper line loading for reliable communication.
The Rabbit 2000 serial port B signals are presented as RS-232 compliant signals TXB
(serial port B transmit) and RXB (serial port B receive) on header J5.
The Rabbit 2000 serial port C signals are presented as RS-232 compliant signals TXC
(serial port C transmit) and RXC (serial port C receive) on header J5.
The maximum baud rate for each RS-232 serial channel is 115,200 bps. RS-232 can be
used effectively at this baud rate for distances up to 15 m.
Because two RS-232 transmit and two RS-232 receive lines are available, one serial chan-
nel can be used for serial transmit and receive, and the other serial channel can be used as
a general digital I/O for RTS/CTS handshaking. Although the present release of Dynamic C
does not support RTS/CTS handshaking in its libraries, it is possible to write your own
software.
3.5.2 RS-485
The Jackrabbit has one RS-485 serial channel, which is connected to the Rabbit 2000
serial port D through U6, an RS-485 transceiver. U6 supports the RS-485 serial communica-
tion protocol. The chip’s slew rate limiters provide for a maximum baud rate of 250,000 bps.
The half-duplex communication uses the Rabbit 2000’s PD5 pin to control the data enable
on the communication line.
The Jackrabbit can be used in an RS-485 multidrop network. Connect the RS-485+ to
RS-485+ and RS-485– to RS-485– using single twisted-pair wires (nonstranded, tinned)
as shown in Figure 11.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 101-0815 | 功能描述:單板計算機 SR9100 512K SRAM RoHS:否 制造商:Ampro By ADLINK 外觀尺寸:EPIC 處理器類型:Intel Atom D510 頻率:1.66 GHz 存儲容量:2 GB (max) 存儲類型:DDR2, L2 Cache 接口類型:Ethernet, PS/2, SATA, Serial, USB 工作電源電壓:5 V, 12 V 功耗:13 W 最大工作溫度:+ 70 C 尺寸:165.1 mm x 114.3 mm |
| 101-0816 | 功能描述:KIT DEV RABBITCORE TCP/IP 2000 RoHS:否 類別:編程器，開發(fā)系統(tǒng) >> 過時/停產(chǎn)零件編號 系列:* 標準包裝:1 系列:- 類型:MCU 適用于相關(guān)產(chǎn)品:Freescale MC68HC908LJ/LK（80-QFP ZIF 插口） 所含物品:面板、纜線、軟件、數(shù)據(jù)表和用戶手冊 其它名稱:520-1035 |
| 101-0817 | 功能描述:單板計算機 BL2030 512K SRAM RoHS:否 制造商:Ampro By ADLINK 外觀尺寸:EPIC 處理器類型:Intel Atom D510 頻率:1.66 GHz 存儲容量:2 GB (max) 存儲類型:DDR2, L2 Cache 接口類型:Ethernet, PS/2, SATA, Serial, USB 工作電源電壓:5 V, 12 V 功耗:13 W 最大工作溫度:+ 70 C 尺寸:165.1 mm x 114.3 mm |
| 101-0818 | 功能描述:單板計算機 BL2100 Fric Lk 512K RoHS:否 制造商:Ampro By ADLINK 外觀尺寸:EPIC 處理器類型:Intel Atom D510 頻率:1.66 GHz 存儲容量:2 GB (max) 存儲類型:DDR2, L2 Cache 接口類型:Ethernet, PS/2, SATA, Serial, USB 工作電源電壓:5 V, 12 V 功耗:13 W 最大工作溫度:+ 70 C 尺寸:165.1 mm x 114.3 mm |
| 101-0820 | 功能描述:COMPUTER SGL-BD BL2000 SRAM/FLSH RoHS:否 類別:集成電路 (IC) >> 嵌入式 - 微控制器或微處理器模塊 系列:SBC 產(chǎn)品目錄繪圖:DLP-245SY-G 標準包裝:1 系列:USB 模塊/板類型:開發(fā)板 適用于相關(guān)產(chǎn)品:USB 其它名稱:813-1006 |
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