参数资料
型号: 101-0602
厂商: Rabbit Semiconductor
文件页数: 83/106页
文件大小: 0K
描述: COMPUTER SNGL BRD BL2500 44.2MHZ
标准包装: 10
系列: SBC
模块/板类型: 单板计算机模块
适用于相关产品: BL2500
72
Coyote (BL2500)
A.4 Use of Rabbit 3000 Parallel Ports
Figure A-6 shows the Rabbit 3000 parallel ports.
Figure A-6. Coyote Rabbit-Based Subsystems
Table A-3 lists the Rabbit 3000 parallel ports and their use in the Coyote.
Table A-3. Use of Rabbit 3000 Parallel Ports
Port
I/O
Signal
Initial State
PA0
Output
OUT0
Low
PA1
Output
OUT1
Low
PA2
Output
OUT2
Low
PA3
Output
OUT3
Low
PA4
Output
RS-485 Transmit Enable
Low (disables transmit)
PA5
Output
SPI Select
Low (= select SPI1)
(high selects SPI2)
PA6
Output
LED DS4
High (disabled)
PA7
Output
LED DS3
High (disabled)
PB0
Output
CLKB SPI
High
PB1
Input
Programming Port Clock
High
PB2
Input
AD0 Low Comparator
Driven by comparator
PB3
Input
AD0 High Comparator
Driven by comparator
RABBIT
3000
Port A
Port B
Port D
(+Ethernet Port)
Port E
PA0PA7
PB0,
PB4PB7
PE1,
PE3PE7
PD4PD5
/RESET,
/IOWR,
STATUS
SMODE0
SMODE1
Watchdog
11 Timers
Clock Doubler
Slave Port
Real-Time Clock
RAM
Backup Battery
Support
Flash
Port C
(Serial Ports B & D)
Programming
Port
(Serial Port A)
Ethernet
Port
4 Ethernet signals
PC6
PB1, PC7, /RES
PC0, PC2, PC4
PC1, PC3, PC5
Port G
(Serial Ports E & F)
Port F
PF0PF5
PG0PG1,
PG4PG5
Port G
(+Serial Ports)
Misc. I/O
/RES_IN
/IORD
PG2, PG6
PB1PB3
PG0, PG1,
PG3PG5, PG7
PF6, PF7
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