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参数资料
| 型号： | XR16M581IB25-0C-EB |
| 厂商： | Exar Corporation |
| 文件页数： | 9/51页 |
| 文件大小： | 0K |
| 描述： | EVAL BOARD FOR XR16M581 25BGA |
| 标准包装： | 1 |
| 系列： | * |
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XR16M581
17
REV. 1.0.1
1.62V TO 3.63V UART WITH 16-BYTE FIFO AND VLIO INTERFACE
transmission as soon as the stop bit of the character in process is shifted out. Transmission is resumed after
the CTS# input is re-asserted (LOW), indicating more data may be sent.
FIGURE 12. AUTO RTS AND CTS FLOW CONTROL OPERATION
RTSA#
CTSB#
RXA
TXB
Transmitter
Receiver FIFO
Trigger Reached
Auto RTS
Trigger Level
Auto CTS
Monitor
RTSA#
TXB
RXA FIFO
CTSB#
Remote UART
UARTB
Local UART
UARTA
ON
OFF
ON
Suspend
Restart
RTS High
Threshold
Data Starts
ON
OFF
ON
Assert RTS# to Begin
Transmission
1
2
3
4
5
6
7
Receive
Data
RTS Low
Threshold
9
10
11
Receiver FIFO
Trigger Reached
Auto RTS
Trigger Level
Transmitter
Auto CTS
Monitor
RTSB#
CTSA#
RXB
TXA
INTA
(RXA FIFO
Interrupt)
RX FIFO
Trigger Level
RX FIFO
Trigger Level
8
12
RTSCTS1
The local UART (UARTA) starts data transfer by asserting RTSA# (1). RTSA# is normally connected to CTSB# (2) of
remote UART (UARTB). CTSB# allows its transmitter to send data (3). TXB data arrives and fills UARTA receive FIFO
(4). When RXA data fills up to its receive FIFO trigger level, UARTA activates its RXA data ready interrupt (5) and con-
tinues to receive and put data into its FIFO. If interrupt service latency is long and data is not being unloaded, UARTA
monitors its receive data fill level to match the upper threshold of RTS delay and de-assert RTSA# (6). CTSB# follows
(7) and request UARTB transmitter to suspend data transfer. UARTB stops or finishes sending the data bits in its trans-
mit shift register (8). When receive FIFO data in UARTA is unloaded to match the lower threshold of RTS delay (9),
UARTA re-asserts RTSA# (10), CTSB# recognizes the change (11) and restarts its transmitter and data flow again until
next receive FIFO trigger (12). This same event applies to the reverse direction when UARTA sends data to UARTB
with RTSB# and CTSA# controlling the data flow.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| XR16M581IB25-F | 功能描述:UART 接口集成电路 1.62-3.63V; 16-Byte FIFO & VLIO; 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 |
| XR16M581IL24 | 制造商:EXAR 制造商全称:EXAR 功能描述:1.62V TO 3.63V UART WITH 16-BYTE FIFO AND VLIO INTERFACE |
| XR16M581IL24-0C-EB | 功能描述:界面开发工具 Eval Board for XR16M581IL24 Series 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 |
| XR16M581IL24-F | 功能描述:UART 接口集成电路 1.62-3.63V; 16-Byte FIFO & VLIO; 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 |
| XR16M581IL32 | 制造商:EXAR 制造商全称:EXAR 功能描述:1.62V TO 3.63V UART WITH 16-BYTE FIFO AND VLIO INTERFACE |
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