参数资料
型号: SC16C752IB48,151
厂商: NXP Semiconductors
文件页数: 5/47页
文件大小: 0K
描述: IC UART DUAL W/FIFO 48-LQFP
标准包装: 250
通道数: 2,DUART
FIFO's: 64 字节
电源电压: 2.5V,3.3V,5V
带自动流量控制功能:
带故障启动位检测功能:
带调制解调器控制功能:
安装类型: 表面贴装
封装/外壳: 48-LQFP
供应商设备封装: 48-LQFP(7x7)
包装: 托盘
其它名称: 568-3289
935270055151
SC16C752IB48-S
Philips Semiconductors
SC16C752
Dual UART with 64-byte FIFO
Product data
Rev. 04 — 20 June 2003
13 of 47
9397 750 11635
Koninklijke Philips Electronics N.V. 2003. All rights reserved.
6.5.1
Interrupt mode operation
In interrupt mode (if any bit of IER[3:0] is 1) the processor is informed of the status of
the receiver and transmitter by an interrupt signal, INT. Therefore, it is not necessary
to continuously poll the line status register (LSR) to see if any interrupt needs to be
serviced. Figure 7 shows interrupt mode operation.
6.5.2
Polled mode operation
In polled mode (IER[3:0] = 0000) the status of the receiver and transmitter can be
checked by polling the line status register (LSR). This mode is an alternative to the
FIFO interrupt mode of operation where the status of the receiver and transmitter is
automatically known by means of interrupts sent to the CPU. Figure 8 shows FIFO
polled mode operation.
Fig 7.
Interrupt mode operation.
11
IIR
IER
THR
RHR
PROCESSOR
IOW / IOR
INT
002aaa230
Fig 8.
FIFO polled mode operation.
00
LSR
IER
THR
RHR
PROCESSOR
IOW / IOR
002aaa231
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