参数资料
型号: SC16C752IB48,151
厂商: NXP Semiconductors
文件页数: 14/47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
21 of 47
9397 750 11635
Koninklijke Philips Electronics N.V. 2003. All rights reserved.
7.3 FIFO control register (FCR)
This is a write-only register that is used for enabling the FIFOs, clearing the FIFOs,
setting transmitter and receiver trigger levels, and selecting the type of DMA
signalling. Table 11 shows FIFO control register bit settings.
Table 11:
FIFO Control Register bits description
Bit
Symbol
Description
7-6
FCR[7]
(MSB),
FCR[6]
(LSB)
RCVR trigger. Sets the trigger level for the RX FIFO.
00 - 8 characters
01 - 16 characters
10 - 56 characters
11 - 60 characters
5-4
FCR[5]
(MSB),
FCR[4]
(LSB)
TX trigger. Sets the trigger level for the TX FIFO.
00 - 8 spaces
01 - 16 spaces
10 - 32 spaces
11 - 56 spaces
FCR[5-4] can only be modied and enabled when EFR[4] is set. This is
because the transmit trigger level is regarded as an enhanced function.
3
FCR[3]
DMA mode select.
Logic 0 = Set DMA mode ‘0’
Logic 1 = Set DMA mode ‘1’
2
FCR[2]
Reset TX FIFO.
Logic 0 = No FIFO transmit reset (normal default condition).
Logic 1 = Clears the contents of the transmit FIFO and resets the
FIFO counter logic (the transmit shift register is not cleared or
altered). This bit will return to a logic 0 after clearing the FIFO.
1
FCR[1]
Reset RX FIFO.
Logic 0 = No FIFO receive reset (normal default condition).
Logic 1 = Clears the contents of the receive FIFO and resets the FIFO
counter logic (the receive shift register is not cleared or altered). This
bit will return to a logic 0 after clearing the FIFO.
0
FCR[0]
FIFO enable.
Logic 0 = Disable the transmit and receive FIFO (normal default
condition).
Logic 1 = Enable the transmit and receive FIFO.
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