SC28L198A1BE,557 NXP Semiconductors, SC28L198A1BE,557 Datasheet - Page 2

• Manufacturer Part Number: SC28L198A1BE,557
• Description: IC UART OCTAL W/FIFO 100-LQFP
• Manufacturer: NXP Semiconductors

Specifications of SC28L198A1BE,557

• Features: False-start Bit Detection
• Number Of Channels: 8
• Fifo's: 16 Byte
• Voltage - Supply: 3.3V, 5V
• With Auto Flow Control: Yes
• With False Start Bit Detection: Yes
• With Modem Control: Yes
• With Cmos: Yes
• Mounting Type: Surface Mount
• Package / Case: 100-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 568-1210; 935262731557; SC28L198A1BE

Philips Semiconductors
Table of Contents
Description
Features
Pin Configurations
Pinout
Absolute Maximum Ratings
Block Diagram
Functional Description
Conceptual Overview
Detailed Descriptions
Receiver and Transmitter
Modes of Operation
REGISTER DEFINITIONS
General Purpose Output Pin Control
Register Maps
2006 Aug 10
Octal UART for 3.3 V and 5 V supply voltage
Uses
Pin Description
Host Interface
Timing Circuits
Channel Blocks
Interrupt Control
Transmitter
Receiver
I/O ports
General Purpose Pins
Global Registers
Character Recognition
Interrupt Arbitration and IRQN generation
Major Modes
Minor Modes
MR – Mode Registers
UCIR – Update CIR
Asynchronous bus cycle
Synchronous bus cycle
Crystal Oscillator
Sclk – System Clock
Baud Rate Generator BRG
BRG Counters (Used for random baud rate generation)
Character Recognition
Global Registers
I/O Ports
Transmission of ”break”
1x and 16x modes, Transmitter
Transmitter FIFO
1x and 16x mode, Receiver
Receiver Status Bits
Receiver FIFO
RxFIFO Status: Status reporting modes
Xon Xoff Characters
Multi-drop or Wake up or 9 bit mode
Character Stripping
IACKN Cycle, Update CIR
Polling
Enabling and Activating Interrupt sources
Setting Interrupt Priorities
Watch-dog Timer Time–out Mode
Wake Up Mode
Xon/Xoff Operation
Status Bits
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Register Map Summary
Register Map Detail
Reset Conditions
DC Electrical Specifications (5V)
AC Electrical Characteristic (5V)
DC Electrical Specifications (3.3V)
AC Electrical Characteristics (3.3V)
INDEX
DESCRIPTION
The Philips 28L198 Octal UART is a single chip CMOS–LSI
communications device that provides 8 full-duplex asynchronous
channels with significantly deeper 16 byte FIFOs, Automatic
in–band flow control using Xon/Xoff characters defined by the user
and address recognition in the wake up mode. Synchronous bus
interface is used for all communication between host and OCTART.
It is fabricated using Philips 1.0 micron CMOS technology that
combines the benefits of low cost, high density and low power
consumption.
The operating speed of each receiver and transmitter can be
selected independently from one of 22 fixed baud rates, a 16X clock
derived from one of two programmable baud rate counters or one of
three external 16X clocks (1 available at 1x clock rate). The baud
rate generator and counter can operate directly from a crystal or
from seven other external or internal clock inputs. The ability to
independently program the operating speed of the receiver and
transmitter makes the Octal UART particularly attractive for dual
speed full duplex channel applications such as clustered terminal
systems. The receivers and transmitters are buffered with FIFOs of
16 characters to minimize the potential for receiver overrun and to
reduce interrupt overhead. In addition, a handshaking capability and
in–band flow control are provided to disable a remote UART
transmitter when the receiver buffer is full or nearly so.
To minimize interrupt overhead an interrupt arbitration system is
included which reports the context of the interrupting UART via
direct access or through the modification of the interrupt vector. The
context of the interrupt is reported as channel number, type of
device interrupting (receiver COS etc.) and, for transmitters or
receivers, the fill level of the FIFO.
The Octal UART provides a power down mode in which the
oscillator is stopped but the register contents are maintained. This
results in reduced power consumption of several orders of
magnitudes. The Octal UART is fully TTL compatible when
operating from a single +5V power supply. Operation at 3.3 volts is
maintained with CMOS interface levels.
The device also offered in a version which maintains TTL input and
output levels while operating with a 3.3 volt power supply.
Device Configuration after Hardware Reset or CRa cmd=x1F 41
Cleared registers:
Clears Modes for:
Disables:
Halts:
Limitations:
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SC28L198
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Product data sheet
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