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| 型号： | SC16C852VIBS,557 |
| 厂商： | NXP Semiconductors |
| 文件页数： | 18/55页 |
| 文件大小： | 0K |
| 描述： | IC UART DUAL W/FIFO 48-HVQFN |
| 标准包装： | 2,450 |
| 特点： | 可编程 |
| 通道数： | 2，DUART |
| FIFO's： | 128 字节 |
| 规程： | RS485 |
| 电源电压： | 2.5V |
| 带自动流量控制功能： | 是 |
| 带IrDA 编码器/解码器： | 是 |
| 带故障启动位检测功能： | 是 |
| 带调制解调器控制功能： | 是 |
| 带CMOS： | 是 |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 48-VFQFN 裸露焊盘 |
| 供应商设备封装： | 48-HVQFN EP（6x6） |
| 包装： | 托盘 |
| 其它名称： | 935283102557 SC16C852VIBS SC16C852VIBS-ND |
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SC16C852V
All information provided in this document is subject to legal disclaimers.
NXP B.V. 2011. All rights reserved.
Product data sheet
Rev. 5 — 21 January 2011
25 of 55
NXP Semiconductors
SC16C852V
Dual UART with 128-byte FIFOs, IrDA, and XScale VLIO bus interface
7.3 FIFO Control Register (FCR)
This register is used to enable the FIFOs, clear the FIFOs, set the receive FIFO trigger
levels, and select the DMA mode.
7.3.1 DMA mode
7.3.1.1
Mode 0 (FCR bit 3 = 0)
In this mode, Transmit Ready (TXRDY) will go to a logic 0 whenever the FIFO (THR, if
FIFO is not enabled) is empty. Receive Ready (RXRDY) will go to a logic 0 whenever the
Receive Holding Register (RHR) is loaded with a character.
7.3.1.2
Mode 1 (FCR bit 3 = 1)
In this mode, the transmit ready (TXRDY) is set when the transmit FIFO is below the
programmed trigger level. The receive ready (RXRDY) is set when the receive FIFO fills
to the programmed trigger level. However, the FIFO continues to fill regardless of the
programmed level until the FIFO is full. RXRDY remains a logic 0 as long as the FIFO fill
level is above the programmed trigger level.
7.3.2 FIFO mode
Table 11.
FIFO Control Register bits description
Bit
Symbol
Description
7:6
FCR[7:6]
Receive trigger level in 32-byte FIFO mode.[1]
These bits are used to set the trigger level for receive FIFO interrupt and flow
control. The SC16C852V will issue a receive ready interrupt when the
number of characters in the receive FIFO reaches the selected trigger level.
Refer to Table 12.
5:4
FCR[5:4]
Transmit trigger level in 32-byte FIFO mode.[2]
These bits are used to set the trigger level for the transmit FIFO interrupt and
flow control. The SC16C852V will issue a transmit empty interrupt when the
number of characters in FIFO drops below the selected trigger level. Refer to
3
FCR[3]
DMA mode select.
logic 0 = set DMA mode ‘0’ (normal default condition)
logic 1 = set DMA mode ‘1’
Transmit operation in mode ‘0’: When the SC16C852V is in the non-FIFO
mode (FIFOs disabled; FCR[0] = logic 0) or in the FIFO mode (FIFOs
enabled; FCR[0] = logic 1; FCR[3] = logic 0), and when there are no
characters in the transmit FIFO, the TXRDY signal will be a logic 0. Once
active, the TXRDY signal will go to a logic 1 after the first character is loaded
into the transmit holding register.
Receive operation in mode ‘0’: When the SC16C852V is in non-FIFO
mode, or in the FIFO mode (FCR[0] = logic 1; FCR[3] = logic 0) and there is
at least one character in the receive FIFO, the RXRDY signal will be a
logic 0. Once active, the RXRDY signal will go to a logic 1 when there are no
more characters in the receiver.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| SC16C852VIBS-G | 功能描述:UART 接口集成电路 1.8V 2CH UART 128B FIFO 5MBPS 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 |
| SC16C852VIBS-S | 功能描述:UART 接口集成电路 1.8V 2CH UART 128B FIFO 5MBPS 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 |
| SC16C852VIET | 功能描述:UART 接口集成电路 1.8V 2CH UART 128B FIFO 5MBPS 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 |
| SC16C852VIET,115 | 功能描述:UART 接口集成电路 1.8V 2CH UART 128B 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 |
| SC16C852VIET,118 | 功能描述:UART 接口集成电路 UART 2-CH 128Byte FIFO 1.8V 36-Pin 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 |
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