參數(shù)資料
型號(hào)： 20-101-0356
廠商： Rabbit Semiconductor
文件頁(yè)數(shù)： 28/94頁(yè)
文件大?。?/td> 0K
描述： COMPUTER SINGLE-BOARD BL1800
標(biāo)準(zhǔn)包裝： 1
系列： Jackrabbit
模塊/板類(lèi)型： 單板計(jì)算機(jī)模塊
適用于相關(guān)產(chǎn)品： BL1800
產(chǎn)品目錄頁(yè)面： 618 (CN2011-ZH PDF)
其它名稱(chēng)： 316-1079
30
Jackrabbit (BL1800)
The Jackrabbit comes with a 220
termination resistor and 681 bias resistors already
installed, as shown in Figure 12.
Figure 12. RS-485 Termination and Bias Resistors
The load these bias and termination resistors present to the RS-485 transceiver (U6) limits
the number of Jackrabbits in a multidrop network to one master and nine slaves, unless the
bias and termination resistors are removed. When using more than 10 Jackrabbits in a
multidrop network, leave the 681
bias resistors in place on the master Jackrabbit, and
leave the 220
termination resistors in place on the Jackrabbit at each end of the network.
3.5.3 Programming Port
The Jackrabbit has a 10-pin program header labeled J3. The programming port uses the
Rabbit 2000’s Serial Port A for communication. Dynamic C uses the programming port to
download and debug programs.
The programming port is also used for the following operations.
Cold-boot the Rabbit 2000 after a reset.
Remotely download and debug a program over an Ethernet connection using the
RabbitLink EG2110.
Fast copy designated portions of flash memory from one Rabbit-based board (the
master) to another (the slave) using the Rabbit Cloning Board.
Alternate Uses of the Serial Programming Port
All three clocked Serial Port A signals are available as
a synchronous serial port
an asynchronous serial port, with the clock line usable as a general CMOS input
The serial programming port may also be used as a serial port via the DIAG connector on
the serial programming cable.
U6
R18
681 W
R17
220 W
R16
681 W
485+
485
6
7
R16
termination
bias
R17
R18
U4
VIN
GND
RESET
JACKRABBIT Z-World, Inc.
GND
PA0
PA2
PA4
PA6
GND
PB0
PB2
PB4
PB6
WDO
GND
PE6
PE4
PE2
PE0
HV0
HV2
K
GND
VCC
PA1
PA3
PA5
PA7
GND
PB1
PB3
PB5
PB7
PCLK
PE7
PE5
PE3
PE1
GND
HV1
HV3
+RAW
VCC
GND
RXC
TXC
PC1
PC3
PC5
PC7
AGND
DA1
PD1
PD3
PD5
PD7
GND
485+
VCC
SM1
STAT
VBAT
GND
VCC
RXB
TXB
PC0
PC2
PC4
PC6
AD0
DA0
PD0
PD2
PD4
PD6
GND
485
VCC
SM0
IOBEN
GND
/RST
J5
U6
U5
U3
J4
U1
J1
J2
J3
Y3
Rabbit 2000
SRAM
RS-232
RS-485
相關(guān)PDF資料
PDF描述
AT28C010-15JI IC EEPROM 1MBIT 150NS 32PLCC
AT28C010-15JC IC EEPROM 1MBIT 150NS 32PLCC
20-101-0436 MODULE RABBITCORE RCM2120
20-101-0404 MODULE RABBITCORE RCM2000
345-030-540-204 CARDEDGE 30POS DUAL .100 GREEN
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20-101-0390 功能描述:子卡和OEM板 SR9210 8 in/ 16 out RoHS:否 制造商:BeagleBoard by CircuitCo 產(chǎn)品:BeagleBone LCD4 Boards 用于:BeagleBone - BB-Bone - Open Source Development Kit
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