IA82050
Asynchronous Serial Controller
Data Sheet
February 25, 2011
®
IA82050
Asynchronous Serial Controller
Data Sheet
®
IA211030617-08
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IA82050
Asynchronous Serial Controller
Data Sheet
February 25, 2011
Copyright
2008 by Innovasic Semiconductor, Inc.
Published by Innovasic Semiconductor, Inc.
3737 Princeton Drive NE, Suite 130, Albuquerque, NM 87107
Intel is a registered trademark of Intel Corporation
MILES™ is a trademark of Innovasic Semiconductor, Inc.
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IA82050
Asynchronous Serial Controller
Data Sheet
February 25, 2011
TABLE OF CONTENTS
List of Figures ..................................................................................................................................4
List of Tables ...................................................................................................................................4
1.
Features ...................................................................................................................................5
2.
Description ..............................................................................................................................7
3.
Functional Overview ..............................................................................................................9
3.1 Transmitter ....................................................................................................................9
3.2 Receiver .........................................................................................................................9
3.3 Bus Interface .................................................................................................................9
3.4 Register Description ....................................................................................................10
4.
Register Descriptions ............................................................................................................11
4.1 Baud Rate Generator A Divide Count, MSB and LSB (BAH/BAL) ..........................11
4.2 General Interrupt Enable Register (GER) ...................................................................11
4.3 General Interrupt Register (GIR) ................................................................................11
4.4 Line Configure Register (LCR) ...................................................................................11
4.5 Line Status Register (LSR) .........................................................................................12
4.6 Modem Control Register (MCR) ................................................................................12
4.7 Modem Status Register (MSR) ...................................................................................13
4.8 Receive Data Register (RXDATA) .............................................................................13
4.9 Scratch Register (SCR) ...............................................................................................13
4.10 Transmit Data Register (TXDATA) ...........................................................................14
5.
AC/DC Parameters ...............................................................................................................15
6.
DC Characteristics ................................................................................................................16
7.
AC Characteristics ................................................................................................................17
8.
Packaging Information..........................................................................................................18
8.1 PDIP Package ..............................................................................................................18
8.2 PLCC Package .............................................................................................................19
9.
Innovasic Part Number Cross-Reference..............................................................................20
10. Revision History ...................................................................................................................21
11. For Additional Information...................................................................................................22
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IA82050
Asynchronous Serial Controller
Data Sheet
February 25, 2011
LIST OF FIGURES
Figure 1.
Figure 2.
Figure 3.
Figure 4.
Package Pinout ................................................................................................................6
Functional Block Diagram ..............................................................................................8
PDW Physical Package Dimensions .............................................................................18
PLCC Physical Package Dimensions ............................................................................19
LIST OF TABLES
Table 1. Register Summary...........................................................................................................10
Table 2. General Interrupt Enable Register ..................................................................................11
Table 3. General Interrupt Register ..............................................................................................11
Table 4. Line Configure Register..................................................................................................12
Table 5. Line Status Register ........................................................................................................12
Table 6. Modem Control Register ................................................................................................13
Table 7. Modem Status Register ...................................................................................................13
Table 8. AC/DC Parameters .........................................................................................................15
Table 9. DC Characteristics ..........................................................................................................16
Table 10. AC Characteristics ........................................................................................................17
Table 11. Innovasic Part Number Cross-Reference for the PDIP ................................................20
Table 12. Innovasic Part Number Cross-Reference for the PLCC ...............................................20
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IA82050
Asynchronous Serial Controller
Data Sheet
February 25, 2011
1.
Features
•
•
•
•
•
•
Form, Fit and Function Compatible with the Intel 82050
Packaging options available: 28-Pin Plastic DIP and 28-Lead Plastic Leaded Chip
Carrier (see Figure 1, Package Pinout)
Asynchronous Serial Channel Operation
Separate Transmit and Receive FIFOs with Programmable Threshold
Programmable Baud Rate Generator up to 288K Baud
Special Protocol Features
– Loopback Modes
– 5- to 8-Bit Character Format
The IA82050 is a "plug-and-play" drop-in replacement for the original IC. Innovasic produces
replacement ICs using its MILES
TM
, or Managed IC Lifetime Extension System, cloning
technology. This technology produces replacement ICs far more complex than "emulation"
while ensuring they are compatible with the original IC. MILES
TM
captures the design of a
clone so it can be produced even as silicon technology advances. MILES
TM
also verifies the
clone against the original IC so that even the "undocumented features" are duplicated. This data
sheet documents all necessary engineering information about the IA82050 including functional
and I/O descriptions, electrical characteristics and applicable timing.
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