参数资料
型号: ST16C554CQ64-F
厂商: Exar Corporation
文件页数: 6/39页
文件大小: 0K
描述: IC UART FIFO 16B QUAD 64LQFP
标准包装: 160
特点: *
通道数: 4,QUART
FIFO's: 16 字节
规程: RS232
电源电压: 2.97 V ~ 5.5 V
带自动流量控制功能:
带故障启动位检测功能:
带调制解调器控制功能:
带CMOS:
安装类型: 表面贴装
封装/外壳: 64-LQFP
供应商设备封装: 64-LQFP(10x10)
包装: 托盘
其它名称: 1016-1264
ST16C554/554D
14
2.97V TO 5.5V QUAD UART WITH 16-BYTE FIFO
REV. 4.0.1
2.11
Internal Loopback
The 554 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 10 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 10. INTERNAL LOOP BACK IN CHANNEL A AND B
TX A-D
RX A-D
M
ode
m
/
G
e
neral
Purp
ose
Co
ntro
lLogic
In
te
rn
al
Dat
a
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
相关PDF资料
PDF描述
VE-26P-IY CONVERTER MOD DC/DC 13.8V 50W
XR17D152CMTR-F IC UART PCI BUS DUAL 100TQFP
VE-26J-IY CONVERTER MOD DC/DC 36V 50W
MS27472E14B18P CONN RCPT 18POS WALL MT W/PINS
VE-26F-IY CONVERTER MOD DC/DC 72V 50W
相关代理商/技术参数
参数描述
ST16C554D 制造商:EXAR 制造商全称:EXAR 功能描述:QUAD UART WITH 16-BYTE FIFOS
ST16C554DCJ 制造商:Exar Corporation 功能描述:
ST16C554DCJ68 制造商:Rochester Electronics LLC 功能描述: 制造商:Exar Corporation 功能描述: 制造商:Exar Corporation 功能描述:IC,UART,LDCC,68PIN,PLASTIC
ST16C554DCJ-68 制造商:Exar Corporation 功能描述:IC,UART,LDCC,68PIN,PLASTIC
ST16C554DCJ68-F 功能描述:UART 接口集成电路 2.97V-5.5V 16B FIFO temp -45 to 85C;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