參數(shù)資料
型號(hào)： XR17C154
廠商： Exar Corporation
英文描述： Tip, Offset Tapered Needle, 1mm Diameter
中文描述： 四5V的PCI總線的UART
文件頁(yè)數(shù)： 17/62頁(yè)
文件大小： 721K
代理商： XR17C154
á
REV. 1.3.0
XR17C154
5V PCI BUS QUAD UART
17
REGB [23:16] (default 0x00)
REGB register provides a control for simultaneous write to all 8 UARTs configuration register or individually.
This is very useful for device initialization in the power up and reset routines. Also, the register provides a
facility to interface to the non-volatile memory device such as a 93C46 EEPROM. In embedded applications,
the user can use this facility to store proprietary data.
1.2.9
The 154 provides 8 multi-purpose inputs/outputs [MPIO7:0] for general use. Each pin can be programmed to
be an input or output function. The input logic state can be set for normal or inverted level, and optionally set to
generate an interrupt. The outputs can be set to be normal HIGH or LOW state, or 3-state. Their functions and
definitions are programmed through 5 registers: MPIOINT, MPIOLVL, MPIO3T, MPIOINV and MPIOSEL. If all
8 pins are set for inputs, all 8 interrupts would be OR’ed together. The Or’ed interrupt is reported in the channel
0 UART interrupt status (3-bit interrupt encoding, bits [10:8], in the global interrupt status register. The pins
may also be programmed to be outputs and to the 3-state condition for signal sharing.
1.2.10
MPIO REGISTER
Bit 7 represents MPIO7 pin and bit 0 represents MPIO0 pin. There are 5 registers that select, control and
monitor the 8 multipurpose inputs and outputs.
Figure 6
shows the internal circuitry.
Multi-Purpose Inputs and Outputs
1.2.8
REGB Register
REGB[16](Read/Write)
Logic 0 (default) write to each UART configuration registers individually.
Logic 1 enables simultaneous write to all 8 UARTs configuration register.
REGB[19:17]
Reserved
REGB[20] (Write-Only)
Control the EECK, clock, output (pin 116) on the EEPROM interface.
REGB[21] (Write-Only)
Control the EECS, chips select, output (pin 115) to the EEPROM device.
REGB[22] (Write-Only)
EEDI (pin 114) data input. Write data to the EEPROM device.
REGB[23] (Read-Only)
EEDO (pin 113) data output. Read data from the EEPROM device.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
XR17C154_05 制造商:EXAR 制造商全稱:EXAR 功能描述:5V PCI BUS QUAD UART
XR17C154CV 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
XR17C154CV-0A-EVB 功能描述:UART 接口集成電路 Supports C154 144 ld TQFP, PCI Interface 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
XR17C154CV-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
XR17C154CVTR-F 制造商:Exar Corporation 功能描述:UART 4-CH 64Byte FIFO 5V 144-Pin LQFP T/R 制造商:Exar Corporation 功能描述:XR17C154CVTR-F
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