REV. 1.4.3 5V PCI BUS OCTAL UART 35 4.6 Internal Loopback Each UART channel provides an internal loopback capability " />
參數(shù)資料
型號(hào): XR17C158CV-0A-EVB
廠商: Exar Corporation
文件頁數(shù): 29/67頁
文件大?。?/td> 0K
描述: EVAL BOARD FOR XR17C158-A 144TQF
標(biāo)準(zhǔn)包裝: 1
系列: *
xr
XR17C158
REV. 1.4.3
5V PCI BUS OCTAL UART
35
4.6
Internal Loopback
Each UART channel provides an internal loopback capability for system diagnostic. The internal loopback
mode is enabled by setting MCR register bit-4 to logic 1. All regular UART functions operate normally.
Figure 16 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 HIGH (idle or de-asserted state), and the CTS#, DSR#
CD# and RI# inputs are ignored.
FIGURE 16. INTERNAL LOOP BACK
TX [7:0]
RX [7:0]
Mode
m
/
Genera
lPurpo
se
Contro
l
Lo
gic
In
ter
n
al
B
u
sLines
an
d
C
ontr
o
lS
ignal
s
RTS# [7:0]
MCR bit-4=1
VCC
Transmit Shift
Register
Receive Shift
Register
CTS# [7:0]
DTR# [7:0]
DSR# [7:0]
RI# [7:0]
CD# [7:0]
OP1#
OP2#
RTS#
CTS#
DTR#
DSR#
RI#
CD#
相關(guān)PDF資料
PDF描述
SK221M025ST CAP ALUM 220UF 25V 20% RADIAL
M3TTK-1436J IDC CABLE - MSD14K/MC14G/MSD14K
CDB42L51 BOARD EVAL FOR CS42L51 CODEC
GMM11DRKI CONN EDGECARD 22POS DIP .156 SLD
UPJ1J151MHD6TO CAP ALUM 150UF 63V 20% RADIAL
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
XR17C158CV-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
XR17C158CVTR-F 制造商:Exar Corporation 功能描述:UART 8-CH 64Byte FIFO 5V 144-Pin LQFP T/R 制造商:Exar Corporation 功能描述:XR17C158CVTR-F
XR17C158IV 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
XR17C158IV-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
XR17C158IVTR-F 制造商:Exar Corporation 功能描述:UART 8-CH 64Byte FIFO 5V 144-Pin LQFP T/R 制造商:Exar Corporation 功能描述:XR17C158IVTR-F