参数资料
型号: SC16C852VIET,157
厂商: NXP Semiconductors
文件页数: 26/55页
文件大小: 0K
描述: IC UART DUAL W/FIFO 36TFBGA
产品培训模块: Stand-Alone UARTs
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:
带IrDA 编码器/解码器:
带故障启动位检测功能:
带调制解调器控制功能:
带CMOS:
安装类型: 表面贴装
封装/外壳: 36-TFBGA
供应商设备封装: 36-TFBGA(3.5x3.5)
包装: 托盘
其它名称: 568-4019
935282518157
SC16C852VIET
SC16C852VIET-ND
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
32 of 55
NXP Semiconductors
SC16C852V
Dual UART with 128-byte FIFOs, IrDA, and XScale VLIO bus interface
7.9 Extra Feature Control Register (EFCR)
This is a write-only register, and it allows the software access to these registers:
First Extra Register Set, Second Extra Register Set, Transmit FIFO Level Counter
(TXLVLCNT), and Receive FIFO Level Counter (RXLVLCNT).
Remark: EFCR[2:1] has higher priority than EFCR[0]. TXLVLCNT and RXLVLCNT can
only be accessed if EFCR[2:1] are zeroes.
7.10 Scratchpad Register (SPR)
The SC16C852V provides a temporary data register to store 8 bits of user information.
7.11 Division Latch (DLL and DLM)
These are two 8-bit registers which store the 16-bit divisor for generation of the baud clock
in the baud rate generator. DLM stores the most significant part of the divisor. DLL stores
the least significant part of the divisor.
7.12 Transmit FIFO Level Count (TXLVLCNT)
This register is a read-only register. It reports the number of spaces available in the
transmit FIFO.
7.13 Receive FIFO Level Count (RXLVLCNT)
This register is a read-only register. It reports the fill level of the receive FIFO (the number
of characters in the RXFIFO).
Table 24.
Extra Feature Control Register bits description
Bit
Symbol
Description
7:3
EFCR[7:3]
reserved
2:1
EFCR[2:1]
Enable Extra Feature Control bits
00 = General Register Set is accessible
01 = First Extra Register Set is accessible
10 = Second Extra Register Set is accessible
11 = reserved
0
EFCR[0]
Enable TXLVLCNT and RXLVLCNT access
0 = TXLVLCNT and RXLVLCNT are disabled
1 = TXLVLCNT and RXLVLCNT are enabled and can be read
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