参数资料
| 型号： | 20-101-1197 |
| 厂商： | Rabbit Semiconductor |
| 文件页数： | 104/168页 |
| 文件大小： | 0K |
| 描述： | MODULE RABBITCORE RCM3910 ROHS |
| 标准包装： | 1 |
| 系列： | RabbitCore® |
| 模块/板类型： | MPU 核心模块 |
| 适用于相关产品： | RCM3910 |
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RabbitCore RCM3900 User’s Manual
40
It is possible to hot-swap microSD Cards without removing power from the RCM3900
modules. The file system partition must be unmounted before the cards can be safely hot-
swapped. The chip selects associated with the card must be set to their inactive state, and
read/write operations addressed to the microSD Card port cannot be allowed to occur.
These operations can be initiated in software by sensing an external switch actuated by the
user, and the card can then be removed and replaced with a different one. Once the appli-
cation program detects a new card, the file system partition can be remounted. These steps
allow the microSD Card to be installed or removed without affecting either the pro-
gram, which continues to run on the RCM3900 module, or the data stored on the card. The
Dynamic C FAT file system will handle this overhead automatically by unmounting the
microSD Card.
NOTE: When using the optional Dynamic C FAT file system module, do not remove or
insert the microSD Card while the
microSD Card is mounted.
You may add an LED to your design or use the BSY LED at DS4 to indicate when the
microSD Card is mounted. The LED can be set to turn off when the microSD Card is
unmounted, indicating that it is safe to remove it. The BSY LED at DS4 is controlled by
PD0; your own LED would use an available parallel port I/O pin. The following macros in
the Dynamic C LIB\Rabbit3000\SDflash\SDFLASH.LIB library will have to be
modified to identify the parallel port pin and to specify the on/off conditions for the LED.
#define SD_LED_PORT_DR
PxDR
// where x is the Parallel Port (A–E)
// 0 for no indicator LED
#define SD_LED_PORT_DRSHADOW
PxDRShadow
// where x is the Parallel Port
// NULL for no indicator LED
#define SD_LED_PORT_FR
PxDFR // where x is the Parallel Port (A–E)
// 0 for no indicator LED
#define SD_LED_PORT_FRSHADOW
PxFRShadow
// where x is the Parallel Port
// NULL for no indicator LED
#define SD_LED_PORT_DDR
PxDDR // where x is the Parallel Port (A–E)
// 0 for no indicator LED
#define SD_LED_PORT_DDRSHADOW PxDDRShadow
// where x is the Parallel Port
// NULL for no indicator LED
#define SD_LED_PORT_DCR
PxCR
// where x is the Parallel Port (A–E)
// 0 for no indicator LED
#define SD_LED_PORT_DCRSHADOW PxCRShadow
// where x is the Parallel Port
// NULL for no indicator LED
#define SD_LED_PIN
n
// Identify pin on parallel port (0–7)
// Use 0 for no indicator LED
#define SD_LED_PORT_OD
0
// LED is driven by transistor
// 1 to drive LED directly by open-drain output
#define SD_LED_PORT_ON
1
// 0 for no indicator LED or to drive LED
// directly by open-drain output, otherwise 1
Standard Windows SD Card readers may be used to read the microSD Card formatted
by the Dynamic C FAT file system with the RCM3900 as long as it has not been parti-
tioned. An SD Card adapter is included with the microSD Card in the in the RCM3900
Development Kit. The SD Card adapter has a sliding switch along the left side that may be
moved down to write-protect the microSD Card while it is being used with an SD Card
reader.
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| 20-101-1202 | 功能描述:WiFi/802.11模块 RCM4400W CORE MODULE Wi-Fi/802.11 RoHS:否 制造商:Taiyo Yuden 支持协议:802.11 b/g/n 频带: 数据速率:150 Mbps 接口类型:SDIO 传输功率（最大）: 天线连接器类型: 工作电源电压:3.4 V to 5.5 V 传输供电电流: 接收供电电流: 最大工作温度:+ 80 C 尺寸:35 mm x 15 mm x 2.9 mm |
| 20-101-1207 | 功能描述:Zigbee/802.15.4模块 RF/IF and RFID RF Evaluation & Development Kits & Boards - RCM4510W FCC CERTIFIED RoHS:否 制造商:Digi International 频带:902 MHz to 928 MHz 视线范围: 数据速率: 灵敏度: 工作电源电压:2.4 V to 3.6 V 传输供电电流:215 mA 接收供电电流:26 mA 输出功率:250 mW 天线连接器类型:Wire 最大工作温度:+ 85 C 尺寸:32.94 mm x 22 mm x 2.03 mm |
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