参数资料
型号: VNC1L-1A
厂商: Future Technology Devices International Ltd
元件分类: 总线控制器
中文描述: UNIVERSAL SERIAL BUS CONTROLLER, PQFP48
封装: 7 X 7 MM, 0.50 MM PITCH, GREEN, LQFP-48
文件页数: 7/32页
文件大小: 672K
代理商: VNC1L-1A
Copyright 2009 Future Technology Devices International Limited
15
Document Reference No.: FT_000030
Vinculum VNC1L Embedded USB Host Controller IC Datasheet Version 2.02
Clearance No.: FTDI# 50
5.1.1 UART Mode Signal Descriptions
Pin No.
Name
Type
Description
31
TXD
Output
Transmit asynchronous data output
32
RXD
Input
Receive asynchronous data input
33
RTS#
Output
Request To Send Control Output
34
CTS#
Input
Clear To Send Control Input
35
DATAACK#
Output
Data Acknowledge (Data Terminal Ready Control) Output
36
DATAREQ#
Input
Data Request (Data Set Ready Control) Input
37
DCD#
Input
Data Carrier Detect Control Input
38
RI#
Input
Ring Indicator Control Input. RI# low can be used to resume the PC USB Host
controller from suspend.
41
TXDEN
Output
Enable Transmit Data for RS485 designs
Table 5.2 Data and Control Bus Signal Mode Options - UART Interface
In RS485 designs, a transmit data enable signal, TXDEN, may be used to signal that a transmit operation
is in progress. TXDEN will be set high one bit-time before data is transmitted and return low one bit time
after the last bit of a data frame has been transmitted.
The ring indicator pin, RI#, is used to wake up VNC1L from suspend mode. The suspend mode can be
entered using a firmware monitor command.
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