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参数资料
| 型号： | XR17V354IB176-F |
| 厂商： | Exar Corporation |
| 文件页数： | 17/66页 |
| 文件大小： | 0K |
| 描述： | IC UART PCIE 256B QUAD 176FPBGA |
| 产品培训模块： | PCIe UARTs |
| 标准包装： | 160 |
| 特点： | * |
| 通道数： | 4，QUART |
| FIFO's： | 256 字节 |
| 规程： | RS485 |
| 电源电压： | 3.3V |
| 带自动流量控制功能： | 是 |
| 带IrDA 编码器/解码器： | 是 |
| 带故障启动位检测功能： | 是 |
| 带调制解调器控制功能： | 是 |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 176-LFBGA |
| 供应商设备封装： | 176-FPBGA（13x13） |
| 包装： | 托盘 |
| 其它名称： | 1016-1472 XR17V354IB176-F-ND |
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XR17V354
24
HIGH PERFORMANCE QUAD PCI-EXPRESS UART
REV. 1.0.3
The 8-bit SLEEP register enables each UART separately to enter Sleep mode. The SLEEP register is
accessible from the Device Configuration Registers in all UART channels but the UART channel can only
control the bit for that channel. For example, writing 0xFF to the SLEEP register in channel 0 will only enable
the sleep mode for channel 0.
Sleep mode reduces power consumption when the system needs to put the UART(s) to idle. The UART enters
sleep mode when the following conditions are satisfied after the sleep mode is enabled (Logic 0 (default) is to
disable and logic 1 is to enable sleep mode):
■
Transmitter and Receiver are empty (LSR[6]=1, LSR[0]=0)
■
RX pin is idling at a HIGH in normal mode or a LOW in infrared mode
■
The modem inputs (CTS#, DSR#, CD# and RI#) are steady at either HIGH or LOW (MSR bits [3:0] =
0x0)
The V354 is awakened by any of the following events occurring at any of the 4 UART channels:
■
A receive data start bit transition (HIGH to LOW in normal mode or from LOW to HIGH in infrared mode)
■
A data byte is loaded into the transmitter
■
A change of logic state on any of the modem inputs so that any of the delta bits (MSR bits[3:0]) is set
(RI# delta bit is only set on the rising edge)
A receive data start bit transition will not wake up the UART if the Multidrop mode is disabled (DLD[6] = 0) and
the receiver is disabled (MSR[2] = 1, MSR[0] = 0).
A special interrupt is generated with an indication of no pending interrupt. The V354 will return to sleep mode
automatically after all interrupting conditions have been serviced and cleared. It will stay in the sleep mode of
operation until it is disabled by resetting the SLEEP register bits.
1.4.6
Device Identification and Revision
There are two internal registers that provide device identification and revision, DVID and DREV registers. The
8-bit content in the DVID register provides device identification. A return value of 0x84 from this register
indicates the device is a XR17V354. The DREV register returns an 8-bit value of 0x01 for revision A with 0x02
equals to revision B and so on. This information is very useful to the software driver for identifying which device
it is communicating with and to keep up with revision changes.
DVID [15:8]
Device identification for the type of UART. The Device ID of the XR17V354 is 0x84.
DREV [7:0]
Revision number of the XR17V354. A 0x01 represents "revision-A" with 0x02 for rev-B and so on.
REGB [23:16] (default 0x00)
REGB register provides a control for simultaneous write to all 4 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 in an external EEPROM.
1.4.7
REGB Register
REGB[16](Read/Write)
Logic 0 (default) write to each UART configuration registers individually.
Logic 1 enables simultaneous write to all 4 UARTs configuration register.
REGB[17](Read/Write)
Logic 0 (default) - wake-up interrupt is generated when UART exits sleep mode.
Logic 1 - No wake-up interrupt is generated when UART exits sleep mode.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| XR17V354IB-E4-EVB | 功能描述:界面开发工具 Eval Board for XR17V354IB-E4 RoHS:否 制造商:Bourns 产品:Evaluation Boards 类型:RS-485 工具用于评估:ADM3485E 接口类型:RS-485 工作电源电压:3.3 V |
| XR17V354IB-E8-EVB | 功能描述:界面开发工具 Eval Board for XR17V354IB-E8 RoHS:否 制造商:Bourns 产品:Evaluation Boards 类型:RS-485 工具用于评估:ADM3485E 接口类型:RS-485 工作电源电压:3.3 V |
| XR17V358 | 制造商:EXAR 制造商全称:EXAR 功能描述:HIGH PERFORMANCE OCTAL PCI EXPRESS UART |
| XR17V358IB-0A-EVB | 功能描述:界面开发工具 Eval Board for XR17V358IB-0A RoHS:否 制造商:Bourns 产品:Evaluation Boards 类型:RS-485 工具用于评估:ADM3485E 接口类型:RS-485 工作电源电压:3.3 V |
| XR17V358IB176-F | 功能描述:UART 接口集成电路 8 Channel PCIe UART w/256 Byte FIFO 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 |
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