参数资料
型号: XE8806AMI026TLF
厂商: Semtech
文件页数: 128/143页
文件大小: 0K
描述: IC MCU LOW PWR MTP FLASH 32-TQFP
标准包装: 1
系列: XE880x
应用: 感测机
核心处理器: Coolrisc816?
程序存储器类型: 闪存(22 kB)
控制器系列: XE8000
RAM 容量: 512 x 8
接口: UART,USRT
输入/输出数: 24
电源电压: 2.4 V ~ 5.5 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 32-TQFP
包装: 剪切带 (CT)
供应商设备封装: 32-TQFP(7x7)
配用: XE8000MP-ND - PROG BOARD AND PROSTART2 CARD
其它名称: XE8806AMI026CT
Semtech 2006
www.semtech.com
14-5
XE8806A/XE8807A
14.5
Interrupts
Two interrupt lines exist: one for the transmitter and one for the receiver.
interrupt source
Irq_Rfif_Rx
Irq_Rfif_Tx
Table 14-10: Interrupts
14.6
External connections
The interface uses 4 I/O pins. The use of these pins depends on the set up of the interface. Table 14-11 shows the
possible use of these pins.
In receive mode, the pin RFIF0 is the receiver data stream input. If the external bit synchronization clock mode is
selected, the RFIF1 pin should be connected to the bit synchronizer clock of the receiver. If the receiver has a
message synchronization signal, it can be connected to RFIF2.
In transmitter mode, the transmitter data pin has to be connected to RFIF3. A bit synchronization clock can be
generated on RFIF2.
RFIF0
RFIF1
RFIF2
RFIF3
Receive mode
data in
clock
match
-
Transmit mode
-
clock
data out
Table 14-11 : PAD management
In case the RFIF pins are multiplexed on a parallel digital I/O port, the interface overwrites all four digital pins as
soon as the receive mode or transmitter mode of the interface are enabled (bit RfifEnRx or RfifEnTx in register
RegRfifCmd3 is set at 1).
Unused pins are configured as inputs with a weak pull-up or pull-down. These pins may remain floating or may be
driven externally. No external pull-ups or pull-downs are required.
14.7
Supported PCM codes
Seven different PCM codes are supported by the interface. They are illustrated in the figure below.
NRZ Code: in this format one message bit is represented by one chip (i.e. the distance between two dotted
lines in Figure 14-2). The coding does not include clock information. The bit sampling clock information has to be
extracted from the message preamble.
Bi-Phase Code or Manchester code: in this format one message bit is represented by two chips. This code
contains clock information.
Delay Modulation or Miller code: in this format one message bit is represented by two chips. This code
contains clock information.
The interface can receive and transmit coded or uncoded messages. The coding/decoding function is
enabled/disabled using the bit RfifEnCod (1 = enable) in the register RegRfifCmd2.
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XE8807AMI026TLF 功能描述:IC MCU LOW PWR MTP FLASH 32-TQFP RoHS:是 类别:集成电路 (IC) >> 嵌入式 - 微控制器 - 特定应用 系列:XE880x 产品变化通告:Product Discontinuation 26/Aug/2009 标准包装:250 系列:- 应用:网络处理器 核心处理器:4Kc 程序存储器类型:- 控制器系列:- RAM 容量:16K x 8 接口:以太网,UART,USB 输入/输出数:- 电源电压:1.8V, 3.3V 工作温度:- 安装类型:表面贴装 封装/外壳:208-LQFP 包装:带卷 (TR) 供应商设备封装:PG-LQFP-208 其它名称:SP000314382