参数资料
型号: XR17C152IM-F
厂商: Exar Corporation
文件页数: 25/62页
文件大小: 0K
描述: IC UART PCI BUS DUAL 100TQFP
标准包装: 90
特点: *
通道数: 2,DUART
FIFO's: 64 字节
规程: RS485
电源电压: 5V
带自动流量控制功能:
带IrDA 编码器/解码器:
带故障启动位检测功能:
带调制解调器控制功能:
安装类型: 表面贴装
封装/外壳: 100-TQFP
供应商设备封装: 100-TQFP(14x14)
包装: 托盘
á
XR17C152
REV. 1.2.0
5V PCI BUS DUAL UART
31
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.
4.7
UART CHANNEL CONFIGURATION REGISTERS AND ADDRESS DECODING.
The 2 sets of UART configuration registers are decoded using address lines A9 to A11 as shown below.
FIGURE 16. INTERNAL LOOP BACK FUNCTION IN EACH UART CHANNEL
A11
A10
A9
UART CHANNEL
SELECTION
000
0
001
1
TX [1:0]
RX [1:0]
M
odem
/
Gener
al
P
u
rpos
e
Cont
ro
l
Logic
In
te
rn
al
Bus
L
ines
an
d
Co
nt
rol
Si
gn
al
s
RTS# [1:0]
MCR bit-4=1
VCC
Transmit Shift
Register
Receive Shift
Register
CTS# [1:0]
DTR# [1:0]
DSR# [1:0]
RI# [1:0]
CD# [1:0]
OP1#
OP2#
RTS#
CTS#
DTR#
DSR#
RI#
CD#
相关PDF资料
PDF描述
XR17C154IV IC UART PCI BUS QUAD 144LQFP
XR17C158IV-F IC UART PCI BUS OCTAL 144LQFP
XR17D152CM-F IC UART PCI BUS DUAL 100TQFP
XR17D154CV-F IC UART PCI BUS QUAD 144LQFP
XR17D158IV-F IC UART PCI BUS OCTAL 144LQFP
相关代理商/技术参数
参数描述
XR17C154 制造商:EXAR 制造商全称:EXAR 功能描述:5V PCI BUS QUAD UART
XR17C154_05 制造商:EXAR 制造商全称:EXAR 功能描述:5V PCI BUS QUAD UART
XR17C154CV 功能描述:UART 接口集成电路 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
XR17C154CV-0A-EVB 功能描述:UART 接口集成电路 Supports C154 144 ld TQFP, PCI Interface 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
XR17C154CV-F 功能描述:UART 接口集成电路 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