參數(shù)資料
型號(hào): XR16M554IJ-0A-EVB
廠商: Exar Corporation
文件頁數(shù): 10/46頁
文件大?。?/td> 0K
描述: EVAL BOARD FOR XR16M554-A 68PLCC
標(biāo)準(zhǔn)包裝: 1
系列: *
XR16M554/554D
18
1.62V TO 3.63V QUAD UART WITH 16-BYTE FIFO
REV. 1.0.0
2.11
Internal Loopback
The M554 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 11 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 11. INTERNAL LOOP BACK IN CHANNELS A - D
TX A-D
RX A-D
M
ode
m
/
G
e
neral
Purp
ose
Co
ntro
lLogic
In
te
rn
al
Data
Bu
s
Li
nes
an
d
Co
ntro
lSi
gn
als
RTS# A-D
MCR bit-4=1
VCC
Transmit Shift Register
(THR/FIFO)
Receive Shift Register
(RHR/FIFO)
CTS# A-D
DTR# A-D
DSR# A-D
RI# A-D
CD# A-D
OP1#
OP2#
RTS#
CTS#
DTR#
DSR#
RI#
CD#
VCC
相關(guān)PDF資料
PDF描述
VI-2TL-EX CONVERTER MOD DC/DC 28V 75W
6278879-3 C/A 50/125UM RIS MTRJ 3M1
H3DKH-4036G IDC CABLE - HKR40H/AE40G/HPK40H
RCC18DCAD CONN EDGECARD 36POS R/A .100 SLD
IMC0402ER22NJ INDUCTOR 22NH 5% 0402
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
XR16M554IJ-0B-EVB 功能描述:界面開發(fā)工具 Eval Board for XR16M554IJ-0B RoHS:否 制造商:Bourns 產(chǎn)品:Evaluation Boards 類型:RS-485 工具用于評估:ADM3485E 接口類型:RS-485 工作電源電壓:3.3 V
XR16M554IJ68 制造商:EXAR 制造商全稱:EXAR 功能描述:1.62V TO 3.63V QUAD UART WITH 16-BYTE FIFO
XR16M554IJ68-F 功能描述:UART 接口集成電路 UART RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 數(shù)據(jù)速率:3 Mbps 電源電壓-最大:3.6 V 電源電壓-最小:2.7 V 電源電流:20 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:LQFP-48 封裝:Reel
XR16M554IL-0A-EVB 功能描述:界面開發(fā)工具 Eval Board for XR16M554IL-0A RoHS:否 制造商:Bourns 產(chǎn)品:Evaluation Boards 類型:RS-485 工具用于評估:ADM3485E 接口類型:RS-485 工作電源電壓:3.3 V
XR16M554IL-0B-EVB 功能描述:界面開發(fā)工具 Eval Board for XR16M554IL-0B RoHS:否 制造商:Bourns 產(chǎn)品:Evaluation Boards 類型:RS-485 工具用于評估:ADM3485E 接口類型:RS-485 工作電源電壓:3.3 V