SC16C654BIEC NXP Semiconductors, SC16C654BIEC Datasheet - Page 31

• Manufacturer Part Number: SC16C654BIEC
• Manufacturer: NXP Semiconductors

Specifications of SC16C654BIEC

• Transmit Fifo: 64Byte
• Receive Fifo: 64Byte
• Transmitter And Receiver Fifo Counter: Yes
• Data Rate: 5Mbps
• Operating Supply Voltage (max): 5.5V
• Mounting: Surface Mount
• Operating Temperature (min): -40C
• Operating Temperature (max): 85C
• Operating Temperature Classification: Industrial
• Lead Free Status / Rohs Status: Compliant

Philips Semiconductors
9397 750 14965
Product data sheet
7.6 Modem Control Register (MCR)
Table 16:
Table 17:
Table 18:
This register controls the interface with the modem or a peripheral device.
Table 19:
LCR[5]
X
0
0
1
1
LCR[2]
0
1
1
LCR[1]
0
0
1
1
Bit
7
6
5
Symbol
MCR[7]
MCR[6]
MCR[5]
LCR[5] parity selection
LCR[2] stop bit length
LCR[1:0] word length
Modem Control Register bits description
LCR[4]
X
0
1
0
1
Word length
5, 6, 7, 8
5
6, 7, 8
LCR[0]
0
1
0
1
Description
Clock select.
IR enable.
Xon Any.
5 V, 3.3 V and 2.5 V quad UART, 5 Mbit/s (max.) with 64-byte FIFOs
logic 0 = divide-by-1. The input clock (crystal or external) is divided by 16
and then presented to the Programmable Baud Rate Generator (BGR)
without further modification, that is, divide-by-1. (normal default condition).
logic 1 = divide-by-4. The divide-by-1 clock described in MCR[7] = a logic 0,
if further divided by four. Also see
generator”.
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 = disable Xon Any function (for 16C554 compatibility) (normal default
condition)
logic 1 = enable Xon Any function. In this mode, any RX character received
will enable Xon
Rev. 02 — 20 June 2005
LCR[3]
0
1
1
1
1
Word length
5
6
7
8
Stop bit length (bit times)
1
1
2
1
2
Parity selection
no parity
odd parity
even parity
forced parity ‘1’
forced parity ‘0’
SC16C654B/654DB
Section 6.9 “Programmable baud rate
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
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