SC16C852IBS,128 NXP Semiconductors, SC16C852IBS,128 Datasheet - Page 40

• Manufacturer Part Number: SC16C852IBS,128
• Description: IC UART DUAL W/FIFO 32HVQFN
• Manufacturer: NXP Semiconductors

Specifications of SC16C852IBS,128

• Features: Programmable
• Number Of Channels: 2, DUART
• Fifo's: 128 Byte
• Protocol: RS485
• Voltage - Supply: 2.5 V ~ 3.3 V
• With Auto Flow Control: Yes
• With Irda Encoder/decoder: Yes
• With False Start Bit Detection: Yes
• With Modem Control: Yes
• With Cmos: Yes
• Mounting Type: Surface Mount
• Package / Case: 32-VFQFN Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

NXP Semiconductors
SC16C852_1
Product data sheet
7.23 SC16C852 external reset condition and software reset
These two reset methods are identical and will reset the internal registers as indicated in
Table
Table 35.
Table 36.
Register
IER
FCR
ISR
LCR
MCR
LSR
MSR
EFCR
SPR
DLL
DLM
TXLVLCNT
RXLVLCNT
EFR
Xon1
Xon2
Xoff1
Xoff2
TXINTLVL
RXINTLVL
FLWCNTH
FLWCNTL
CLKPRES
RS485TIME
AFCR2
AFCR1
Output
TXA, TXB
OP2A, OP2B
RTSA, RTSB
DTRA, DTRB
INTA, INTB
35.
Reset state for registers
Reset state for outputs
Reset state
IER[7:0] = 0
FCR[7:0] = 0
ISR[7:1] = 0; ISR[0] = 1
LCR[7:0] = 0
MCR[7:0] = 0
LSR[7] = 0; LSR[6:5] = 1; LSR[4:0] = 0
MSR[7:4] = input signals; MSR[3:0] = 0
EFCR[7:0] = 0
SPR[7:0] = 1
undefined
undefined
TXLVLCNT[7:0] = 0
RXLVLCNT[7:0] = 0
EFR[7:0] = 0
undefined
undefined
undefined
undefined
TXINTLVL[7:0] = 0
RXINTLVL[7:0] = 0
FLWCNTH[7:0] = 0
FLWCNTL[7:0] = 0
CLKPRES[7:0] = 0
RS485TIME[7:0] = 0
AFCR2[7:0] = 0
AFCR1[7:0] = 0
Reset state
logic 1
logic 1
logic 1
logic 1
3-state condition
Rev. 01 — 31 August 2009
Dual UART with 128-byte FIFOs and IrDA encoder/decoder
SC16C852
© NXP B.V. 2009. All rights reserved.
40 of 60