SBS IP-OCTAL-422 User manual

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IP-OCTAL-422
Eight Channel RS-422
IndustryPack®
User’s Manual
©199, 2005 SBSTechnologies, Inc.
Subject to change without notice.
Hardware Revision: A
Part # 89002068 Rev. 1.0
20050125
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IP-OCTAL-422
Eight Channel RS-422
IndustryPack®
SBS Tecnologies, Inc
1284 Corporate Center Drive
St. Paul, MN 55121
Tel [phone]
FAX [phone]
Email: [email protected]
http://www.sbs.com
©1999, 2005 SBS Technologies, Inc.
IndustryPack is a registered trademark of SBS
Technologies, Inc. QuickPack, SDpacK and Unilin
are trademarks SBS Technologies, Inc. PC•MIP
is a trademark of SBS Technologies, Inc. and
MEN Mikro GmbH.
SBS Technologies, Inc acknowledges the
trademarks of other organizations for their
respective products mentioned in this document.
A
ll rights are reserved: No one is permitted to
reproduce or duplicate, in any form, the whole or
part of this document without the express consent
of SBS Technologies. This document is meant
solely for the purpose in which it was delivered.
SBS Technologies reserves the right to make any
changes in the devices or device specifications
contained herein at any time and without notice.
Customers are advised to verify all information
contained in this document.
The electronic equipment described herein
generates, uses, and may radiate radio frequency
energy, which can cause radio interference. SBS
Technologies assumes no liability for any
damages caused by such interference.
SBS Technologies’ products are not authorized for
use as critical components in medical applications
such as life support equipment, without the
express consent of the president of SBS
Technologies, Inc.
This product has been designed to operate with
IndustryPack, PC•MIP or PMC modules or
carriers and compatible user-provided equipment.
Connection of incompatible hardware is likely to
cause serious damage. SBS Technologies
assumes no liability for any damages caused by
such incompatibility.
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Table of Contents
Product Description............................................................................................................... 5
VMEbus Addressing ............................................................................................................. 7
NuBus Addressing ................................................................................................................9
I/O Pin Assignments.............................................................................................................. 10
IndustryPack Logic Interface................................................................................................. 12
Programming......................................................................................................................... 13
ID PROM............................................................................................................................... 14
User Options ......................................................................................................................... 15
Construction and Reliability .................................................................................................. 16
Repair.................................................................................................................................... 17
Shunt Locations .................................................................................................................... 18
Specifications ........................................................................................................................ 19
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List of Figures
Figure 1 Simplified Block Diagram of IP-OCTAL-422............................................... 5
Figure 2 Register Map of SCC2698, Blocks A and B ............................................... 7
Figure 3 Register Map of SCC2698, Blocks C and D............................................... 8
Figure 4 I/O Pin Assignment ..................................................................................... 10
Figure 5 Logic Interface Pin Assignment .................................................................. 12
Figure 6 Location of the Vector Register .................................................................. 13
Figure 7 ID PROM Data (hex)................................................................................... 14
Figure 8 Strobe Connection Options......................................................................... 15
Figure 9 DMA Shunt Assignments ............................................................................ 15
Figure 10 Shunt Locations .......................................................................................... 18
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5
Product Description
IP-OCTAL-422 is part of the Industry Pack™ family of modular I/O components. It is
based around the Signetics CMOS SCC2698 Octal Universal Asynchronous
Receiver/Transmitter. This component provides eight channels of full-duplex
asynchronous serial communications, baud rate generators, state change detect logic,
and four 16-bit counter/timers.
A block diagram of the IP-OCTAL-422 is shown below in Figure 1.
RS-422 communication levels are provided by 26LS31 and 26LS32 transmitters and
receivers. Differential transmit data (TxD) and receive data (RxD) lines are provided,
plus ground. RS-422 communication is preferred over RS-232 because it provides
significantly higher noise immunity. A second advantage is that no ±12 volt power is
required at either the send or receive end.
Vectored interrupts are fully supported. A common 8-bit vector register is provided.
Channels a,b,c,d interrupt on IRQ0. Channels e,f,g,h interrupt on IRQ1.
RS-422
One of eight
Channels
Eight general
purpose inputs
8
SCC2698B
Octart
Control PAL
Vector
Register
ID PROM
Logic
Interface
+
–
RS-422
+
–
Figure 1 Simplified Block Diagram of IP-OCTAL-422
DMA is supported on channels c and d.
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6
The IndustryPack is controlled by a single CMOS 22V10 type PAL.
Connection to the IP-OCTAL-422 is via a standard 50-conductor ribbon cable. An
optional connection panel is available which provides a 50-pin flat cable input with 16 DB-
9 male or female connectors. The metal reinforced connection panel mounts in a
standard 19 inch rack-mount space.
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7
VMEbus Addressing
IP-OCTAL-422 is accessed using 8-bit bytes at odd locations only. It is usually accessed
in the I/O space. Shown below in Figures 2 and 3 are the register maps of the
IP-OCTAL-422. All addresses are offsets from the I/O base address of the IP as set on
the IP carrier board.
The SCC2698B Octal UART has four major internal sections, called functional blocks A
through D. Each functional block has two serial channels, one timer, and one I/O port.
Hex Dec Binary Read Write
Functional Block A
1 1 0000001 MR1a, MR2a MR1a, MR2a
3 3 0000011 SRa CSRa
5 5 0000101 RESERVED CRa
7 7 0000111 RHRa THRa
9 9 0001001 IPCRA ACRA
B 11 0001011 ISRA IMRA
D 13 0001101 CTUA CTURA
F 15 0001111 CRLB CTLRB
11 17 0010001 MR1b, MR2b MR1b, MR2b
13 19 0010011 SRb CSRb
15 21 0010101 RESERVED CRb
17 23 0010111 RHRb RHRb
19 25 0011001 RESERVED RESERVED
1B 27 0011011 INPUT PORT A OPCRA
1D 29 0011101 START C/T A RESERVED
1F 31 0011111 STOP C/T A RESERVED
Functional Block B
21 33 0100001 MR1c, MR2c MR1c, MR2c
23 35 0100011 SRc CSRc
25 37 0100101 RESERVED CRc
27 39 0100111 RHRc THRc
29 41 0101001 IPCRB ACRB
2B 43 0101011 ISRB IMRB
2D 45 0101101 CTUB CTURB
2F 47 0101111 CRLB CTLRB
31 49 0110001 MR1d, MR2d MR1d, MR2d
33 51 0110011 SRd CSRd
35 53 0110101 RESERVED CRd
37 55 0110111 RHRd THRd
39 57 0111001 RESERVED RESERVED
3B 59 0111011 INPUT PORT B OPCRB
3D 61 0111101 START C/T B RESERVED
3F 63 0111111 STOP C/T B RESERVED
Figure 2 Register Map of SCC2698, Blocks A and B
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Hex Dec Binary Read Write
Functional Block C
41 65 1000001 MR1e, MR2e MR1e, MR2e
43 67 1000011 SRe CSRe
45 69 1000101 RESERVED CRe
47 71 1000111 RHRe THRe
49 73 1001001 IPCRC ACRC
4B 75 1001011 ISRC IMRC
4D 77 1001101 CTUC CTURC
4F 79 1001111 CRLC CTLRC
51 81 1010001 MR1f, MR2f MR1f, MR2f
53 83 1010011 SRf CSRf
55 85 1010101 RESERVED CRf
57 87 1010111 RHRf THRf
59 89 1011001 RESERVED RESERVED
5B 91 1011011 INPUT PORT C OPCRC
5D 93 1011101 START C/T C RESERVED
5F 95 1011111 STOP C/T C RESERVED
Functional Block D
61 97 1100001 MR1g, MR2g MR1g, MR2g
63 99 1100011 SRg CSRg
65 101 1100101 RESERVED CRg
67 103 1100111 RHRg THRg
69 105 1101001 IPCRD ACRD
6B 107 1101011 ISRD IMRD
6D 109 1101101 CTUD CTURD
6F 111 1101111 CRLD CTLRD
71 113 1110001 MR1h, MR2h MR1h, MR2h
73 115 1110011 SRh CSRh
75 117 1110101 RESERVED CRh
77 119 1110111 RHRh RHRh
79 121 1111001 RESERVED RESERVED
7B 123 1111011 INPUT PORT D OPCRD
7D 125 1111101 START C/T D RESERVED
7F 127 1111111 STOP C/T D RESERVED
Figure 3 Register Map of SCC2698, Blocks C and D
For NuBus applications see the section following, Nubus Addressing.
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9
NuBus Addressing
Since the Nubus uses only 32-bit wide accesses, 8-bit wide peripherals such as the IP-
OCTAL-422 appear in the host address space every fourth byte.
To calculate the RM1260 Springboard register addresses from the VMEbus address
(given in the previous section in Figures 2 and 3), multiply by two and subtract one. To
convert VME addresses to RM1270 SupportBoard addresses multiply by two and add
one.
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10
I/O Pin Assignments
This section gives the pin assignments for IP-OCTAL-422 connections.
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11
Pin
Number Channel Function Level
1 Channel a GND RS-422
2 Channel a TxD– RS-422
3 Channel a TxD+ RS-422
4 Channel a RxD– RS-422
5 Channel a RxD+ RS-422
6 Channel b GND RS-422
7 Channel b TxD– RS-422
8 Channel b TxD+ RS-422
9 Channel b RxD– RS-422
10 Channel b RxD+ RS-422
11 Channel c GND RS-422
12 Channel c TxD– RS-422
13 Channel c TxD+ RS-422
14 Channel c RxD– RS-422
15 Channel c RxD+ RS-422
16 Channel d GND RS-422
17 Channel d TxD– RS-422
18 Channel d TxD+ RS-422
19 Channel d RxD– RS-422
20 Channel d RxD+ RS-422
21 Channel e GND RS-422
22 Channel e TxD– RS-422
23 Channel e TxD+ RS-422
24 Channel e RxD– RS-422
25 Channel e RxD+ RS-422
26 Channel f GND RS-422
27 Channel f TxD– RS-422
28 Channel f TxD+ RS-422
29 Channel f RxD– RS-422
30 Channel f RxD+ RS-422
31 Channel g GND RS-422
32 Channel g TxD– RS-422
33 Channel g TxD+ RS-422
34 Channel g RxD– RS-422
35 Channel g RxD+ RS-422
36 Channel h GND RS-422
37 Channel h TxD– RS-422
38 Channel h TxD+ RS-422
39 Channel h RxD– RS-422 40
Channel h RxD+ RS-422
41 -- GND --
42 -- no connection
43 Channel a MPI - a CMOS*
44 Channel b MPI - b CMOS*
45 Channel c MPI - c CMOS*
46 Channel d MPI - d CMOS*
47 Channel e MPI - e CMOS*
48 Channel f MPI - f CMOS*
49 Channel g MPI - g CMOS*
50 Channel h MPI - h CMOS*
*Note: I/O lines on pins 43–50 are ±50 µA
input current, TTL thresholds.
Figure 4 I/O Pin Assignment
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Each channel has five lines. Each channel is wired identically at the 50-pin connector.
The five lines are Ground, Transmit Data output Minus, Transmit Data output Plus,
Receive Data input Minus, and Receive Data input Plus. The common ground line for all
channels connects to the local logic ground.
Eight general purpose input lines at non-RS-422 levels are provided on pins 43 through
50. These are unbuffered CMOS logic inputs connected directly to the SCC2698B. They
may be programmed as general purpose inputs or as the counter/timer external input.
The switching threshold for inputs is at TTL levels (1.5 volts nominal). Since these lines
are unbuffered, the user is cautioned to observe anti-static rules in handling cabling, the
IndustryPack and all connecting hardware. External equipment connected to these lines
should be powered up and down at the same time as the IndustryPack.
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13
IndustryPack Logic Interface
Pin Assignment
Figure 5 below gives the pin assignments for the IndustryPack Logic Interface on the IP-
OCTAL-422. Pins marked n/c below are defined by the specification, but not used on IP-
OCTAL-422.
GND GND 1 26
CLK +5V 2 27
Reset* R/W* 3 28
D0 IDSel* 4 29
D1 DMAReq0 5 30
D2 MEMSel* 6 31
D3 DMAReq1 7 32
D4 INTSel* 8 33
D5 DMAck0* 9 34
D6 IOSel* 10 35
D7 DMAck1* 11 36
n/c A1 12 37
n/c n/c 13 38
n/c A2 14 39
n/c n/c 15 40
n/c A3 16 41
n/c n/c 17 42
n/c A4 18 43
n/c n/c 19 44
n/c A5 20 45
n/c Strobe* 21 46
–12V A6 22 47
+12V Ack* 23 48
+5V n/c 24 49
GND GND 25 50
Note 1: The no-connect (n/c) signals above are defined by the IndustryPack Logic Interface
Specification, but not used by this IP. See the Specification for more information.
Note 2: The layout of the pin numbers in this table corresponds to the physical placement of pins
on the IP connector. Thus this table may be used to easily locate the physical pin corresponding
to a desired signal. Pin 1 is marked with a square pad on the IndustryPack.
Figure 5 Logic Interface Pin Assignment
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14
Programming
The IP-OCTAL-422 is designed around the SCC2698B and all of the SCC2698 functions
are available. The SCC2698B is divided into four Functional Blocks lettered A through
D. Each functional block contains two serial channels. The channels are identified by
lower case letters a through h. The SCC2698B contains 64 internal registers, 16 for
each functional block. Each of these registers are accessible using a read or write to the
IP-OCTAL-422 I/O space. The SCC2698 manual is included with the Technical
Documentation to provide the user with detailed information about these registers.
The IndustryPack provides an external vector register. The address of the vector
register, which may also be read normally, is in the upper half of the ID PROM space of
the IndustryPack, on odd bytes. The address offsets are shown in Figure 6.
There is also provision for mapping the vector register to IP memory space. This is
required primarily when the IP is installed on a Motorola MVME162 CPU board. In this
mode, no address offset is required; the memory base address is sufficient.
Carrier Bus Address
VIPC310 VMEbus IP I/O base + $C1
VIPC610 VMEbus IP I/O base + $C1
MVME162 IPIC IP Memory base
RM1260 NuBus IP ID base + $81
RM1270 NuBus IP ID base + $83
Figure 6 Location of the Vector Register
The eight bit vector is loaded by the host software prior to enabling interrupts. The
interrupts service routine polls the SCC2698B to determine the detailed cause of the
interrupt. Function Blocks A and B interrupt on IRQ0. Function Blocks C and D interrupt
on IRQ1. See the User Manual for your IP Carrier tor interrupt mapping to your bus.
Note that although two distinct interrupt levels are provided, there is a single vector for
the IndustryPack.
A Hypercard stack is available that permits quick demonstration, testing and prototyping
of the IP-OCTAL-422. A user provide Apple® Macintosh® II family computer is required.
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15
ID PROM
Every IP contains an IP PROM, whose size is at least 32 x 8 bits. The ID PROM aids in
software auto configuration and configuration management. The user's software, or a
supplied driver, may verify that the device it expects is actually installed at the location it
expects, and is nominally functional. The ID PROM contains the manufacturing revision
level of the IP. If a driver requires that a particular revision be present, it may check for it
directly.
Standard data in the ID PROM on the IP-OCTAL-422 is shown in Figure 7 below.
For more information on IP ID PROMs refer to the IndustryPack Logic Interface
Specification, available from SBS.
The location of the ID PROM in the host's address space is dependent on which carrier is
used. Normally for VMEbus carriers the ID PROM space is directly above the IP's I/O
space, or at IP-base + $80. Macintosh drivers use the ID PROM automatically. RM1260
address may be derived from Figure 7 below by multiplying the addresses given by two,
then subtracting one. RM1270 addresses may be derived by multiplying the addresses
given by two, then adding one.
The ID PROM used is an AMD 27LS19A or equivalent.
3F
(available for user)
19
17 CRC
15 No of bytes used (0B)
13 Driver ID, high byte
11 Driver ID, low byte
0F reserved (00)
0D Revision (A1)
0B Model No IP-OCTAL-422 (2A)
09 Manufacturer ID SBS (F0)
07 ASCII "C" (43)
05 ASCII "A" (41)
03 ASCII "P" (50)
01 ASCII "I" (49)
Figure 7 ID PROM Data (hex)
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16
User Options
User options consist of connecting to the Strobe pin on the Logic Interface and
connections to support DMA.
The location of the shunt groups is shown near the end of this Manual in Figure 10.
The Strobe pin on the Logic Interface (pin 46) is provided for secondary clock input or
output. This pin may be driven by the Channel a Multi-Purpose Output from the SCC, or
it may be connected to provide for the external input the to Counter/Timer. These
options are shown below in Figure 8. Note that in most cases some corresponding
programming of SCC modes is required. The SCC may be programmed to drive the
connected pin for other functions that those listed in the Figure below. The IndustryPack
Logic Interface Specification restricts the Strobe pin to clock functions, however. Only
those functions listed below should programmed.
Shunt E1 I/O SCC Pin Function
1-2 Output MPOa Counter/Timer output
1-2 Output MPOa Transmit Clock (1X or 16X)
1-2 Output MPOa Receive Clock (1X or 16X)
2–3 Input MPI1a General Purpose Input
2–3 Input MPI1a Counter/Timer External Input
OUT none none Strobe Pin floating default
Figure 8 Strobe Connection Options
The IP-OCTAL-422 is configured to support minimum Direct Memory Access (DMA) on
Channels C and D. To use DMA, program the SCC for TxRDY or RxRDY on MPOc
and/or MPOd. See Figure 9 below for DMA Shunt Assignments.
Shunt SCC Pin Logic Pin Function
E2 IN MPOc DMAReq0 TxRDY or RxRDY
E3 IN MPOd DMAReq1 TxRDY or RxRDY
E2,E3 OUT -- -- No DMA default
Figure 9 DMA Shunt Assignments
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17
Construction and Reliability
IndustryPacks were conceived and engineered for rugged industrial environments. The
IP-OCTAL-422 is constructed out of 0.062 inch thick FR4 material. The six copper layers
consist of a ground plane, a power plane and four signal planes.
Surface mounting of components is used extensively. IC sockets for the control PAL and
ID PROM use gold plated screw-machined pins. High insertion and removal forces are
required, which assists in keeping components in place. If the application requires
unusually high reliability or is in an environment subject to high vibration, the user may
solder the four corner pins of each socketed IC into the socket, using a grounded
soldering iron.
The IndustryPack connectors are keyed, shrouded and gold plated on both contacts and
receptacles. They are rated at 1 Amp per pin, 200 insertion cycles minimum. These
connectors make consistent, correct insertion easy and reliable.
The IP is optionally secured to the carrier with four metric M2 stainless steel screws. The
heads of the screws are countersunk into the IP. The four screws provide significant
protection against shock, vibration, and incomplete insertion. For most applications they
are not required.
The IndustryPack provides a low temperature coefficient of 0.89 W/°C for uniform heat.
This is based on the temperature coefficient of the base FR4 material of .31 W/m-°C, and
taking into account the thickness and area of the IP. This coefficient means that if 0.89
Watts is applied uniformly on the component side, that the temperature difference
between the component and the solder side is one degree Celsius.
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18
Repair
Service Policy
Before returning a product for repair, verify as well as possible that the suspected unit is
at fault. Then call the factory for a RETURN MATERIAL AUTHORIZATION (RMA)
number. Carefully package the unit, in the original shipping carton if this is available, and
ship prepaid and insured with the RMA number clearly written on the outside of the
package. Include a return address and the telephone number of a technical contact. For
out-of-warranty repairs, a purchase order for repair charges must accompany the return.
SBS will not be responsible for damages due to improper packaging of returned items.
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19
Shunt Locations
SCC2698B
OSC
E1
E2
E3
Figure 10 Shunt Locations
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