ZHCSKJ6 December 2019 TL16C750E
PRODUCTION DATA.
- 1 特性
- 2 应用
- 3 说明
- 4 修订历史记录
- 5 说明 （续）
- 6 Pin Configuration and Functions
- 7 Specifications
- 8 Parameter Measurement Information
-
9 Detailed Description
- 9.1 Overview
- 9.2 Functional Block Diagrams
- 9.3
Feature Description
- 9.3.1 UART Modes
- 9.3.2 Trigger Levels
- 9.3.3 Hardware Flow Control
- 9.3.4 Auto-RTS
- 9.3.5 Auto-CTS
- 9.3.6 Software Flow Control
- 9.3.7 Software Flow Control Example
- 9.3.8 Reset
- 9.3.9 Interrupts
- 9.3.10 Interrupt Mode Operation
- 9.3.11 Polled Mode Operation
- 9.3.12 Break and Timeout Conditions
- 9.3.13 Programmable Baud Rate Generator with Fractional Divisor
- 9.3.14 Fractional Divisor
- 9.4 Device Functional Modes
- 9.5
Register Maps
- 9.5.1 Registers Operations
- 9.5.2 Receiver Holding Register (RHR)
- 9.5.3 Transmit Holding Register (THR)
- 9.5.4 FIFO Control Register (FCR)
- 9.5.5 Line Control Register (LCR)
- 9.5.6 Line Status Register (LSR)
- 9.5.7 Modem Control Register (MCR)
- 9.5.8 Modem Status Register (MSR)
- 9.5.9 Interrupt Enable Register (IER)
- 9.5.10 Interrupt Identification Register (IIR)
- 9.5.11 Enhanced Feature Register (EFR)
- 9.5.12 Divisor Latches (DLL, DLH, DLF)
- 9.5.13 Transmission Control Register (TCR)
- 9.5.14 Trigger Level Register (TLR)
- 9.5.15 FIFO Ready Register
- 9.5.16 Alternate Function Register (AFR)
- 9.5.17 RS-485 Mode
- 9.5.18 IrDA Overview
- 9.5.19 IrDA Encoder Function
- 10Application and Implementation
- 11Power Supply Recommendations
- 12Layout
- 13器件和文档支持
- 14机械、封装和可订购信息
9.3.11 Polled Mode Operation
In polled mode (IER[3:0] = 0000), the status of the receiver and transmitter can then be checked by polling the line status register (LSR). This mode is an alternative to the interrupt mode of operation where the status of the receiver and transmitter is automatically known by means of interrupts sent to the CPU. Figure 25 shows polled mode operation.
Figure 25. FIFO Polled Mode Operation