SC16C850LIBS,157 NXP Semiconductors, SC16C850LIBS,157 Datasheet - Page 28

• Manufacturer Part Number: SC16C850LIBS,157
• Description: IC UART SINGLE W/FIFO 32-HVQFN
• Manufacturer: NXP Semiconductors

Specifications of SC16C850LIBS,157

• Features: Programmable
• Number Of Channels: 1, UART
• Fifo's: 128 Byte
• Protocol: RS485
• Voltage - Supply: 1.8V
• 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
• Other names: 935283086157; SC16C850LIBS; SC16C850LIBS

NXP Semiconductors
SC16C850L
Product data sheet
7.6 Modem Control Register (MCR)
Table 18.
This register controls the interface with the modem or a peripheral device.
Table 19.
LCR[1]
0
0
1
1
Bit
7
6
5
4
3
2
1
0
Symbol
MCR[7]
MCR[6]
MCR[5]
MCR[4]
MCR[3]
MCR[2]
MCR[1]
MCR[0]
LCR[1:0] word length
Modem Control Register bits description
LCR[0]
0
1
0
1
All information provided in this document is subject to legal disclaimers.
1.8 V single UART with 128-byte FIFOs and IrDA encoder/decoder
Description
Clock select
IR enable (see
Interrupt type (Intel mode only). In Intel mode (16/68 = 1), this pin
determines the interrupt output pin configuration.
In Motorola mode (16/68 = 0), the output is always open-drain.
Loopback. Enable the local loopback mode (diagnostics). In this mode the
transmitter output (TX) and the receiver input (RX), CTS, DSR, CD, and RI
are disconnected from the SC16C850L I/O pins. Internally the modem data
and control pins are connected into a loopback data configuration (see
Figure
operational. The Modem Control Interrupts are also operational, but the
interrupts’ sources are switched to the lower four bits of the Modem Control.
Interrupts continue to be controlled by the IER register.
OP2. This bit is used for internal Loopback mode only. In Loopback mode,
this bit is used to write the state of the modem CD interface signal.
OP1. This bit is used for internal Loopback mode only. In Loopback mode,
this bit is used to write the state of the modem RI interface signal.
RTS
DTR
Rev. 5 — 1 February 2011
logic 0 = divide-by-1 clock input
logic 1 = divide-by-4 clock input
logic 0 = enable the standard modem receive and transmit input/output
interface (normal default condition)
logic 1 = enable infrared IrDA receive and transmit inputs/outputs. While
in this mode, the TX/RX output/inputs are routed to the infrared
encoder/decoder. The data input and output levels will conform to the
IrDA infrared interface requirement. As such, while in this mode, the
infrared TX output will be a logic 0 during idle data conditions.
logic 0 = CMOS output
logic 1 = open-source. A 300  to 500  pull-down resistor is required.
logic 0 = disable Loopback mode (normal default condition)
logic 1 = enable local Loopback mode (diagnostics)
logic 0 = force RTS output to a logic 1 (normal default condition)
logic 1 = force RTS output to a logic 0
logic 0 = force DTR output to a logic 1 (normal default condition)
logic 1 = force DTR output to a logic 0
9). In this mode, the receiver and transmitter interrupts remain fully
Word length (bits)
5
6
7
8
Figure
22).
SC16C850L
© NXP B.V. 2011. All rights reserved.
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