參數(shù)資料
型號(hào): SC16C852LIBS
廠商: NXP Semiconductors N.V.
元件分類: 收發(fā)器
英文描述: 1.8 V dual UART, 5 Mbit-s (max.) with 128-byte FIFOs, infrared (IrDA) and 16 mode or 68 mode bus interface
封裝: SC16C852LIB<SOT313-2 (LQFP48)|<<http://www.nxp.com/packages/SOT313-2.html<1<Always Pb-free,;SC16C852LIB<SOT313-2 (LQFP48)|<<http://www.nxp.com/packages/SOT313-2.html<1
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代理商: SC16C852LIBS
SC16C852L
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NXP B.V. 2011. All rights reserved.
Product data sheet
Rev. 4 — 1 February 2011
13 of 64
NXP Semiconductors
SC16C852L
1.8 V dual UART with 128-byte FIFOs and IrDA encoder/decoder
6.3 Internal registers
The SC16C852L provides two sets of internal registers (A and B) consisting of
25 registers each for monitoring and controlling the functions of each channel of the
UART. These registers are shown in
Table 5
.
Table 5.
A2
General register set (THR/RHR, IER/ISR, MCR/MSR, FCR, LCR/LSR, SPR)
[1]
0
0
0
Receive Holding Register
0
0
1
Interrupt Enable Register
0
1
0
Interrupt Status Register
0
1
1
Line Control Register
1
0
0
Modem Control Register
1
0
1
Line Status Register
1
1
0
Modem Status Register
1
1
1
Scratchpad Register
Baud rate register set (DLL/DLM)
[2]
0
0
0
LSB of Divisor Latch
0
0
1
MSB of Divisor Latch
Second special register set (TXLVLCNT/RXLVLCNT)
[3]
0
1
1
Transmit FIFO Level Count
1
0
0
Receive FIFO Level Count
Enhanced feature register set (EFR, Xon1/Xon2, Xoff1/Xoff2)
[4]
0
1
0
Enhanced Feature Register
1
0
0
Xon1 word
1
0
1
Xon2 word
1
1
0
Xoff1 word
1
1
1
Xoff2 word
First extra feature register set (TXINTLVL/RXINTLVL, FLWCNTH/FLWCNTL)
[5]
0
1
0
Transmit FIFO Interrupt Level
1
0
0
Receive FIFO Interrupt Level
1
1
0
Flow Control Count High
1
1
1
Flow Control Count Low
Second extra feature register set (CLKPRES, RS485TIME, AFCR2, AFCR1)
[6]
0
1
0
Clock Prescaler
1
0
0
RS-485 turn-around Timer
1
1
0
Additional Feature Control Register 2 Additional Feature Control Register 2
1
1
1
Additional Feature Control Register 1 Additional Feature Control Register 1
[1]
These registers are accessible only when LCR[7] is a logic 0.
[2]
These registers are accessible only when LCR[7] is a logic 1.
[3]
Second special registers are accessible only when EFCR[0] = 1.
[4]
Enhanced feature registers are only accessible when LCR = 0xBF.
[5]
First extra feature registers are only accessible when EFCR[2:1] = 01b.
[6]
Second extra feature registers are only accessible when EFCR[2:1] = 10b.
Internal registers decoding
A0
Read mode
A1
Write mode
Transmit Holding Register
Interrupt Enable Register
FIFO Control Register
Line Control Register
Modem Control Register
Extra Feature Control Register (EFCR)
n/a
Scratchpad Register
LSB of Divisor Latch
MSB of Divisor Latch
n/a
n/a
Enhanced Feature Register
Xon1 word
Xon2 word
Xoff1 word
Xoff2 word
Transmit FIFO Interrupt Level
Receive FIFO Interrupt Level
Flow Control Count High
Flow Control Count Low
Clock Prescaler
RS-485 turn-around Timer
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