参数资料
型号: XR16M681IL24-0C-EB
厂商: Exar Corporation
文件页数: 15/51页
文件大小: 0K
描述: EVAL BOARD FOR XR16M681-C 24QFN
标准包装: 1
系列: *
XR16M681
22
1.62V TO 3.63V UART WITH 32-BYTE FIFO AND VLIO INTERFACE
REV. 1.0.1
2.18
Internal Loopback
The M681 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 14 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 pin is held HIGH or mark condition while RTS# and DTR# are de-asserted, and CTS#,
DSR# CD# and RI# inputs are ignored. Caution: the RX input must be held HIGH during loopback test else
upon exiting the loopback test the UART may detect and report a false “break” signal.
FIGURE 14. INTERNAL LOOPBACK
TX
RX
M
ode
m
/
G
ene
ra
lP
u
rpose
Control
L
ogi
c
Inte
rnal
D
a
ta
Bus
Line
sand
Control
S
ignals
RT S #
M C R bit-4=1
VC C
T ra n sm it S h ift R e g is te r
(TH R /FIFO )
R ec e iv e S h ift R e gis ter
(RHR/F IF O )
CT S #
DT R#
DS R#
RI#
CD#
OP 1 #
RT S #
CT S #
DT R#
DS R#
RI#
CD #
VC C
OP 2 #
相关PDF资料
PDF描述
EEM36DCAN CONN EDGECARD 72POS R/A .156 SLD
H3CKH-2618G IDC CABLE - HKC26H/AE26G/HPK26H
MAX8521ETP+T IC DRVR PWR TEC 20-TQFN
H3BKH-1618M IDC CABLE - HSR16H/AE16M/HPK16H
EEM36DCAH CONN EDGECARD 72POS R/A .156 SLD
相关代理商/技术参数
参数描述
XR16M681IL24-F 功能描述:UART 接口集成电路 1.62-3.63V; 32-Byte FIFO & VLIO; UART 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
XR16M681IL32 制造商:EXAR 制造商全称:EXAR 功能描述:1.62V TO 3.63V UART WITH 32-BYTE FIFO AND VLIO INTERFACE
XR16M681IL32-0C-EB 功能描述:界面开发工具 Eval Board for XR16M681IL32 Series 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
XR16M681IL32-F 功能描述:UART 接口集成电路 1.62-3.63V; 32-Byte FIFO & VLIO; UART 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
XR16M698 制造商:EXAR 制造商全称:EXAR 功能描述:1.62V TO 3.63V HIGH PERFORMANCE OCTAL UART WITH 32-BYTE FIFO