REV. 1.0.3 HIGH PERFORMANCE QUAD PCI-EXPRESS UART 3.4 Internal Loopback Each UART channel provides an internal loopba" />
參數(shù)資料
型號: XR17V354IB-0A-EVB
廠商: Exar Corporation
文件頁數(shù): 33/66頁
文件大?。?/td> 0K
描述: EVAL BOARD FOR XR17V354-A 176BGA
產(chǎn)品培訓(xùn)模塊: PCIe UARTs
標(biāo)準(zhǔn)包裝: 1
主要目的: 接口,UART
嵌入式:
已用 IC / 零件: XR17V354
已供物品:
其它名稱: 1016-1611
XR17V354IB-0A-EVB-ND
XR17V354
39
REV. 1.0.3
HIGH PERFORMANCE QUAD PCI-EXPRESS UART
3.4
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 a logic 1. All regular UART functions operate normally.
Figure 12 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 at HIGH or mark condition while RTS# and DTR# are de-asserted. The CTS#,
DSR#, CD# and RI# inputs are ignored.
FIGURE 12. INTERNAL LOOP BACK
TX [3:0]
RX [3:0]
M
o
de
m
/
G
e
ne
ral
Pur
po
se
Co
nt
ro
l
L
ogic
In
ter
nal
Bu
s
Li
nes
an
d
Con
tr
o
lSig
na
ls
RTS# [3:0]
MCR bit-4=1
VCC
Transmit Shift
Register
Receive Shift
Register
CTS# [3:0]
DTR# [3:0]
DSR# [3:0]
RI# [3:0]
CD# [3:0]
OP1#
OP2#
RTS#
CTS#
DTR#
DSR#
RI#
CD#
相關(guān)PDF資料
PDF描述
202A196-3-0 BOOT MOLDED
570-002-734-100 ASSEMBLY PLUG 2POS WATERPROOF
LMR040-0700-CCF9-2KIT4X KIT DEV LMR040-0700, 230V
322A024-25-0 BOOT MOLDED
0210490393 CABLE JUMPER 1.25MM .102M 32POS
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
XR17V354IB176-F 功能描述:UART 接口集成電路 4 Channel PCIe UART w/256 Byte FIFO 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
XR17V354IB-E4-EVB 功能描述:界面開發(fā)工具 Eval Board for XR17V354IB-E4 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
XR17V354IB-E8-EVB 功能描述:界面開發(fā)工具 Eval Board for XR17V354IB-E8 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
XR17V358 制造商:EXAR 制造商全稱:EXAR 功能描述:HIGH PERFORMANCE OCTAL PCI EXPRESS UART
XR17V358IB-0A-EVB 功能描述:界面開發(fā)工具 Eval Board for XR17V358IB-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