参数资料
型号: XR20M1170L16-0A-EB
厂商: Exar Corporation
文件页数: 15/56页
文件大小: 0K
描述: EVAL BOARD FOR XR20M1170 16QFN
标准包装: 1
主要目的: 接口,UART
嵌入式:
已用 IC / 零件: XR20M1170
次要属性: I²C & SPI 接口
已供物品:
其它名称: 1016-1618
XR20M1170L16-0A-EB-ND
XR20M1170
22
I2C/SPI UART WITH 64-BYTE FIFO
REV. 1.1.0
2.17
Internal Loopback
The M1170 UART provides an internal loopback capability for system diagnostic purposes. The internal
loopback mode is enabled by setting MCR register bit-4 to logic 1. All regular UART functions operate normally.
Figure 19 shows how the modem port signals are re-configured. Transmit data from the transmit shift register
output is internally routed to the receive shift register input allowing the system to receive the same data that it
was sending. The TX, RTS# and DTR# pins are held while the CTS#, DSR# CD# and RI# inputs are ignored.
Caution: the RX input pin must be held HIGH during loopback test else upon exiting the loopback test the
UART may detect and report a false “break” signal. Also, Auto RTS/CTS flow control is not supported during
internal loopback.
FIGURE 19. INTERNAL LOOP BACK
TX
RX
Mo
dem
/
G
en
era
lP
urp
ose
C
on
trol
L
ogic
In
te
rna
lDa
ta
Bu
s
Lin
es
a
nd
Control
S
ig
n
a
ls
RTS#
MCR bit-4=1
VC C
VCC
Transm it Shift R egister
(TH R/FIFO )
Receive Shift R egister
(RHR /FIFO )
CTS#
DTR #
DSR#
RI#
CD #
OP1#
RTS#
CTS#
DTR#
DSR#
RI#
CD#
VC C
OP2#
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相关代理商/技术参数
参数描述
XR20M1170L16-0B-EB 功能描述:UART 接口集成电路 Supports M1170 16pin QFN, SPI Interface RoHS:否 制造商:Texas Instruments 通道数量:2 数据速率:3 Mbps 电源电压-最大:3.6 V 电源电压-最小:2.7 V 电源电流:20 mA 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:LQFP-48 封装:Reel
XR20M1170L24-0A-EB 功能描述:UART 接口集成电路 Supports M1170 24pin QFN, I2C Interface RoHS:否 制造商:Texas Instruments 通道数量:2 数据速率:3 Mbps 电源电压-最大:3.6 V 电源电压-最小:2.7 V 电源电流:20 mA 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:LQFP-48 封装:Reel
XR20M1170L24-0B-EB 功能描述:UART 接口集成电路 Supports M1170 28pin QFN, SPI Interface RoHS:否 制造商:Texas Instruments 通道数量:2 数据速率:3 Mbps 电源电压-最大:3.6 V 电源电压-最小:2.7 V 电源电流:20 mA 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:LQFP-48 封装:Reel
XR20M1170L28-0A-EB 功能描述:UART 接口集成电路 Supports M1170 28pin QFN, I2C Interface RoHS:否 制造商:Texas Instruments 通道数量:2 数据速率:3 Mbps 电源电压-最大:3.6 V 电源电压-最小:2.7 V 电源电流:20 mA 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:LQFP-48 封装:Reel
XR20M1170L28-0B-EB 功能描述:界面开发工具 Supports M1170 28pin QFN, SPI Interface RoHS:否 制造商:Bourns 产品:Evaluation Boards 类型:RS-485 工具用于评估:ADM3485E 接口类型:RS-485 工作电源电压:3.3 V