SAF82532 Datasheet PDF - SIEMENS

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SAF82532
SIEMENS

Part Number SAF82532
Description Enhanced Serial Communication Controller
Page 30 Pages


SAF82532 datasheet pdf
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ICs for Communications
Enhanced Serial Communication Controller
ESCC2
SAB 82532
SAF 82532
Version 3.2
User’s Manual 07.96



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SAB 82532
SAF 82532
Revision History:
Current Version: 07.96
Previous Version: User’s Manual 07.93
Page
(in previous
Version)
Page
(in new
Version)
Subjects (major changes since last revision)
- 10 new package provided: P-MQFP-80
- 72 Selectable out-of-band flow control in ASYNC mode: description added
- 75 In-band flow control transparency: description added
- 87 Selectable enhanced resolution BRG: description added
110, 141, 167 124, 170, 208 Timer register (TIMR): description extended for V3.x
107, 127
120, 149
RSTA register, ISR0 register (RME interrupt): description extended
115, 146, 172 133, 179, 217 XBCH, bit XC: description extended
124,152, 179 144, 187, 227 Baud rate generator register (BGR): description extended
133 157 Channel configuration register 4 (CCR4) in HDLC mode: description extended
138 164 STAR, bit XFW: description extended
140 168 Mode register (MODE) in ASYNC mode: new bits (FRTS, FRCS)
144 175 RFIFO Control Register (RFC) in ASYNC mode: new bit (DXS)
-
198, 237
Channel Configuration Register 4 (CCR4) in ASYNC and BISYNC mode: new
register
204 256 XTAL1 clock period, high time and low time: min. values for N-10 version
corrected
Edition 07.96
This edition was realized using the software system FrameMaker®.
Published by Siemens AG,
Bereich Halbleiter, Marketing-
Kommunikation, Balanstraße 73,
81541 München
© Siemens AG 1996.
All Rights Reserved.
Attention please!
As far as patents or other rights of third parties are concerned, liability is only assumed for components, not for applications, processes
and circuits implemented within components or assemblies.
The information describes the type of component and shall not be considered as assured characteristics.
Terms of delivery and rights to change design reserved.
For questions on technology, delivery and prices please contact the Semiconductor Group Offices in Germany or the Siemens Companies
and Representatives worldwide (see address list).
Due to technical requirements components may contain dangerous substances. For information on the types in question please contact
your nearest Siemens Office, Semiconductor Group.
Siemens AG is an approved CECC manufacturer.
Packing
Please use the recycling operators known to you. We can also help you – get in touch with your nearest sales office. By agreement we
will take packing material back, if it is sorted. You must bear the costs of transport.
For packing material that is returned to us unsorted or which we are not obliged to accept, we shall have to invoice you for any costs in-
curred.
Components used in life-support devices or systems must be expressly authorized for such purpose!
Critical components1 of the Semiconductor Group of Siemens AG, may only be used in life-support devices or systems2 with the express
written approval of the Semiconductor Group of Siemens AG.
1 A critical component is a component used in a life-support device or system whose failure can reasonably be expected to cause the
failure of that life-support device or system, or to affect its safety or effectiveness of that device or system.
2 Life support devices or systems are intended (a) to be implanted in the human body, or (b) to support and/or maintain and sustain hu-
man life. If they fail, it is reasonable to assume that the health of the user may be endangered.



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SAB 82532
Table of Contents
Page
1
1.1
1.2
1.3
1.4
1.5
1.6
1.6.1
1.6.2
1.6.2.1
1.6.2.2
1.6.2.3
1.6.2.4
1.6.2.5
1.6.2.6
1.6.2.7
1.6.2.8
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Pin Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Pin Definitions and Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Logic Symbol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Functional Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
System Integration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
General Aspects . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
ESCC2 with SAB 8051 Microcontroller . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
ESCC2 with SAB 80188 Microprocessor . . . . . . . . . . . . . . . . . . . . . . . . . . 27
ESCC2 with SAB 80286 Microprocessor
and SAB 82258 Advanced DMA Controller (ADMA) . . . . . . . . . . . . . . . . . 28
ESCC2 with 80386 or SAB-R3000 (MIPS) . . . . . . . . . . . . . . . . . . . . . . . . . 29
ESCC2 with MC 68008 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
ESCC2 with MC 68000, 68010, 68012 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
ESCC2 with MC 68020, 68030 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Interrupt Cascading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
2 Basic Functional Principles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
2.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
2.2 FIFO Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
3 Microprocessor Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
3.1 Register Set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
3.2 Data Transfer Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
3.3 Interrupt Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
4 DMA Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
5
5.1
5.2
5.2.1
5.2.2
5.2.3
5.3
5.4
5.4.1
5.4.2
5.4.3
5.4.4
5.4.5
5.4.6
5.4.7
HDLC/SDLC Serial Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Operating Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Procedural Support (layer-2 functions) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Full-Duplex LAPB/LAPD Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Half-Duplex SDLC-NRM Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Error Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
SDLC Loop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Special Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Shared Flags . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Preamble Transmission . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
CRC-32 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Extended Transparent Transmission and Reception . . . . . . . . . . . . . . . . . 64
Cyclic Transmission (fully transparent) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
Continuous Transmission (DMA mode only) . . . . . . . . . . . . . . . . . . . . . . . 65
Receive Length Check Feature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
Semiconductor Group
3
07.96



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SAB 82532
Table of Contents
Page
5.4.8 One Bit Insertion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
5.4.9 CRC ON/OFF Feature (version 2 upward) . . . . . . . . . . . . . . . . . . . . . . . . . 67
5.4.10 Receive Address Handling (version 2 upward) . . . . . . . . . . . . . . . . . . . . . . 67
6
6.1
6.2
6.2.1
6.2.2
6.3
6.4
6.4.1
6.4.2
6.4.3
6.4.4
6.4.5
Asynchronous Serial Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Character Frame . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Data Reception . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
Operating Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
Storage of Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
Data Transmission . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
Special Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
Break Detection/Generation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
Flow Control by XON/XOFF (version 2 upward) . . . . . . . . . . . . . . . . . . . . . 71
Selectable Out-of-band Flow Control for Transmitter and Receiver (V3.x) . 72
In-band Flow Control Transparency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
Continuous Transmission (DMA mode only) . . . . . . . . . . . . . . . . . . . . . . . 75
7
7.1
7.2
7.3
7.4
7.4.1
7.4.2
7.4.3
Character Oriented Serial Mode (MONOSYNC/BISYNC) . . . . . . . . . . . . 76
Data Frame . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
Data Reception . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
Data Transmission . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
Special Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
Preamble Transmission . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
Continuous Transmission (DMA mode only) . . . . . . . . . . . . . . . . . . . . . . . 79
CRC Parity Inhibit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
8
8.1
8.2
8.3
8.3.1
8.3.2
8.3.3
8.3.4
8.3.5
8.4
8.5
8.5.1
8.5.2
8.6
8.7
Serial Interface (layer-1 functions) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
Clock Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
Clock Recovery (DPLL) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
Bus Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
Bus Access Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
Collisions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
Priority (HDLC/SDLC mode only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
Timing Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
Functions of RTS Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
Data Encoding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
Modem Control Functions (RTS/CTS, CD) . . . . . . . . . . . . . . . . . . . . . . . . . 97
RTS/CTS Handshaking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
Carrier Detect (CD) Receiver Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
Test Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
Universal Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
9 Operational Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
9.1 Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
9.2 Initialization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
Semiconductor Group
4
07.96



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