SC16C2550 Philips Semiconductors, SC16C2550 Datasheet - Page 46

• Manufacturer Part Number: SC16C2550
• Description: Dual UART with 16 bytes of transmit and receive FIFOs and infrared (IrDA) encoder/decoder
• Manufacturer: Philips Semiconductors

Philips Semiconductors
Contents
1
2
3
4
5
5.1
5.2
6
6.1
6.2
6.3
6.4
6.5
6.6
6.7
6.8
6.9
6.10
7
7.1
7.2
7.2.1
7.2.2
7.3
7.3.1
7.3.2
7.4
7.5
7.6
7.7
7.8
7.9
7.10
7.11
© Koninklijke Philips Electronics N.V. 2003.
Printed in the U.S.A
All rights are reserved. Reproduction in whole or in part is prohibited without the prior
written consent of the copyright owner.
The information presented in this document does not form part of any quotation or
contract, is believed to be accurate and reliable and may be changed without notice. No
liability will be accepted by the publisher for any consequence of its use. Publication
thereof does not convey nor imply any license under patent- or other industrial or
intellectual property rights.
Date of release: 19 June 2003
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Ordering information . . . . . . . . . . . . . . . . . . . . . 2
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Pinning information . . . . . . . . . . . . . . . . . . . . . . 4
Functional description . . . . . . . . . . . . . . . . . . . 9
Register descriptions . . . . . . . . . . . . . . . . . . . 16
Pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Pin description . . . . . . . . . . . . . . . . . . . . . . . . . 6
UART A-B functions . . . . . . . . . . . . . . . . . . . . . 9
Internal registers. . . . . . . . . . . . . . . . . . . . . . . 10
FIFO operation . . . . . . . . . . . . . . . . . . . . . . . . 11
Hardware flow control . . . . . . . . . . . . . . . . . . . 11
Software flow control . . . . . . . . . . . . . . . . . . . 11
Special feature software flow control . . . . . . . 12
Hardware/software and time-out interrupts. . . 12
Programmable baud rate generator . . . . . . . . 13
DMA operation . . . . . . . . . . . . . . . . . . . . . . . . 14
Loop-back mode . . . . . . . . . . . . . . . . . . . . . . . 14
Transmit (THR) and Receive (RHR)
Interrupt Enable Register (IER) . . . . . . . . . . . 17
IER versus Transmit/Receive FIFO interrupt
IER versus Receive/Transmit FIFO polled
FIFO Control Register (FCR) . . . . . . . . . . . . . 19
DMA mode . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
FIFO mode . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Interrupt Status Register (ISR) . . . . . . . . . . . . 21
Line Control Register (LCR) . . . . . . . . . . . . . . 22
Modem Control Register (MCR) . . . . . . . . . . . 24
Line Status Register (LSR) . . . . . . . . . . . . . . . 25
Modem Status Register (MSR). . . . . . . . . . . . 26
Scratchpad Register (SPR) . . . . . . . . . . . . . . 27
Enhanced Feature Register (EFR) . . . . . . . . . 27
SC16C2550 external reset condition . . . . . . . 29
Holding Registers . . . . . . . . . . . . . . . . . . . . . 17
mode operation . . . . . . . . . . . . . . . . . . . . . . . 18
mode operation . . . . . . . . . . . . . . . . . . . . . . . 19
Document order number: 9397 750 11621
Dual UART with 16 bytes of transmit and receive FIFOs and IrDA
8
9
10
10.1
11
12
12.1
12.2
12.2.1
12.2.2
12.3
12.3.1
12.3.2
12.3.3
12.4
13
14
15
16
Limiting values . . . . . . . . . . . . . . . . . . . . . . . . 29
Static characteristics . . . . . . . . . . . . . . . . . . . 30
Dynamic characteristics . . . . . . . . . . . . . . . . . 31
Package outline . . . . . . . . . . . . . . . . . . . . . . . . 39
Soldering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Revision history . . . . . . . . . . . . . . . . . . . . . . . 44
Data sheet status. . . . . . . . . . . . . . . . . . . . . . . 45
Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Disclaimers . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Timing diagrams. . . . . . . . . . . . . . . . . . . . . . . 32
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Through-hole mount packages . . . . . . . . . . . 42
Soldering by dipping or by solder wave . . . . . 42
Manual soldering . . . . . . . . . . . . . . . . . . . . . . 42
Surface mount packages . . . . . . . . . . . . . . . . 42
Reflow soldering. . . . . . . . . . . . . . . . . . . . . . . 42
Wave soldering. . . . . . . . . . . . . . . . . . . . . . . . 43
Manual soldering . . . . . . . . . . . . . . . . . . . . . . 43
Package related soldering information . . . . . . 44
SC16C2550
encoder/decoder