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参数资料
| 型号： | XR16M570IL32-0B-EB |
| 厂商： | Exar Corporation |
| 文件页数： | 13/50页 |
| 文件大小： | 0K |
| 描述： | EVAL BOARD FOR XR16M570-B 32QFN |
| 标准包装： | 1 |
| 系列： | * |
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XR16M570
20
1.62V TO 3.63V HIGH PERFORMANCE UART WITH 16-BYTE FIFO
REV. 1.0.1
2.17
Sleep Mode with Auto Wake-Up and Power-Save feature
The M570 supports low voltage system designs, hence, a sleep mode with auto wake-up and power-save
feature is included to reduce its power consumption when the chip is not actively used.
2.17.1
Sleep mode
All of these conditions must be satisfied for the M570 to enter sleep mode:
■ no interrupts pending (ISR bit-0 = 1)
■ sleep mode is enabled (IER bit-4 = 1)
■ modem inputs are not toggling (MSR bits 0-3 = 0)
■ RX input pin is idling HIGH in normal mode or LOW in infrared mode
■ divisor is non-zero
■ TX and RX FIFOs are empty
The M570 stops its crystal oscillator to conserve power in the sleep mode. User can check the XTAL2 pin for
no clock output as an indication that the device has entered the sleep mode.
The M570 resumes normal operation by any of the following:
■ a receive data start bit transition (HIGH to LOW)
■ a data byte is loaded to the transmitter, THR or FIFO
■ a change of logic state on any of the modem or general purpose serial inputs: CTS#, DSR#, CD#, RI#
If the M570 is awakened by any one of the above conditions, it will return to the sleep mode automatically after
all interrupting conditions have been serviced and cleared. If the M570 is awakened by the modem inputs, a
read to the MSR is required to reset the modem inputs. In any case, the sleep mode will not be entered while
FIGURE 13. INFRARED TRANSMIT DATA ENCODING AND RECEIVE DATA DECODING
Character
Data Bits
St
a
rt
Stop
00
0
11
1
Bit Time
1/16 Clock Delay
IRdecoder-1
RX Data
Receive
IR Pulse
(RX pin)
Character
Data Bits
St
ar
t
St
op
00
0
11
1
TX Data
Transmit
IR Pulse
(TX Pin)
Bit Time
1/2 Bit Time
3/16 or 1/4 Bit Time
IrEncoder-1
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相关代理商/技术参数 |
参数描述 |
|---|---|
| XR16M570IL32-0C-EB | 功能描述:界面开发工具 Eval Board for XR16M570IL32 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 |
| XR16M570IL32-F | 功能描述:UART 接口集成电路 1.8 HIGH PERFORMANCE UART W/16 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 |
| XR16M570IL32TR-F | 功能描述:UART 接口集成电路 1.8 HIGH PERFORMANCE UART W/16 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 |
| XR16M580 | 制造商:EXAR 制造商全称:EXAR 功能描述:1.62V TO 3.63V HIGH PERFORMANCE UART WITH 16-BYTE FIFO |
| XR16M580IB25 | 制造商:EXAR 制造商全称:EXAR 功能描述:1.62V TO 3.63V HIGH PERFORMANCE UART WITH 16-BYTE FIFO |
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