SC16C752BIBS,128 NXP Semiconductors, SC16C752BIBS,128 Datasheet - Page 25

• Manufacturer Part Number: SC16C752BIBS,128
• Description: IC DUAL UART 64BYTE 32HVQFN
• Manufacturer: NXP Semiconductors

Specifications of SC16C752BIBS,128

• Features: False-start Bit Detection
• Number Of Channels: 2, DUART
• Fifo's: 64 Byte
• Voltage - Supply: 2.5V, 3.3V, 5V
• With Auto Flow Control: Yes
• With False Start Bit Detection: Yes
• With Modem Control: Yes
• Mounting Type: Surface Mount
• Package / Case: 32-VFQFN Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 935276389128; SC16C752BIBS-F; SC16C752BIBS-F

NXP Semiconductors
SC16C752B
Product data sheet
7.6 Modem Control Register (MCR)
The MCR controls the interface with the mode, data set, or peripheral device that is
emulating the modem.
Table 14.
[1]
Bit
7
6
5
4
3
2
1
0
MCR[7:5] can only be modified when EFR[4] is set, i.e., EFR[4] is a write enable.
MCR[7]
MCR[6]
MCR[5]
MCR[4]
MCR[3]
MCR[2]
MCR[1]
MCR[0]
Symbol
Modem Control Register bits description
[1]
[1]
[1]
All information provided in this document is subject to legal disclaimers.
Description
Clock select.
TCR and TLR enable.
Xon Any.
Enable loopback.
IRQ enable OP.
FIFO Ready enable.
RTS
DTR
5 V, 2.2 V and 2.5 V dual UART, 5 Mbit/s (max.), with 64-byte FIFOs
logic 0 = divide-by-1 clock input
logic 1 = divide-by-4 clock input
logic 0 = no action
logic 1 = enable access to the TCR and TLR registers
logic 0 = disable Xon Any function
logic 1 = enable Xon Any function
logic 0 = normal operating mode.
logic 1 = enable local Loopback mode (internal). In this mode the MCR[3:0]
signals are looped back into MSR[7:4] and the TXn output is looped back to
the RXn input internally.
logic 0 = forces INTA, INTB outputs to the 3-state mode and OP output to
HIGH state
logic 1 = forces the INTA-INTB outputs to the active state and OP output to
LOW state. In Loopback mode, controls MSR[7].
logic 0 = disable the FIFO Rdy register
logic 1 = enable the FIFO Rdy register. In Loopback mode, controls MSR[6].
logic 0 = force RTSn output to inactive (HIGH)
logic 1 = force RTSn output to active (LOW). In loopback mode, controls
MSR[4]. If auto-RTS is enabled, the RTSn output is controlled by hardware
flow control.
logic 0 = force DTRn output to inactive (HIGH)
logic 1 = force DTRn output to active (LOW). In Loopback mode, controls
MSR[5].
Rev. 6 — 30 November 2010
Table 14
shows modem control register bit settings.
SC16C752B
© NXP B.V. 2010. All rights reserved.
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