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Power Tools 1993 November - Disc 1
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Power Tools Plus (Disc 1 of 2)(November 1993)(HP).iso
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a3821029
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1992-05-09
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Direct I/O Asynchronous 8-Channel Multiplexer, Technical Data
Product Number 98638A
The HP 98638A Multiplexer (MUX) provides 8 asynchronous EIA RS-232-C
compatible ports with full duplex modem control capability or an
optional RS-422 interface in a direct connect mode. It connects up to 8
devices to the HP 9000 Series 300 DIO-II systems. A wide range of
configurable transmission modes and formats permits hardwired and
remote connection of various CRT terminals, printers, plotters, and
other asynchronous devices.
Features
o 8 full-duplex asynchronous serial I/O ports with 10-wire modem
control capability, with the RS-232-C interface, satisfying European
license requirements
o EIA RS-232-C, V.24 and V.28 compatibility
o Full-duplex modem support
o Programmable data rates for each channel up to 19.2 Kbaud
o Programmable character size: 7 or 8 data bits
o Parity, overrun, framing error check detects transmission faults
o Programmable parity: odd, even, or none
o Programmable number of stop bits: 1 or 2
o Firmware-based self-test helps assure interface integrity
o Programmable device Xon/Xoff handshaking to pace MUX input and output
transmission
o Device CTS handshaking to pace MUX input and output data transmission
o Onboard buffering
o Programmable interrupt interval
o Special Character recognition
o System console support
Functional Description
The HP 98638A MUX is used for interfacing either up to 8 EIA RS-232-C,
or up to 8 RS-422 compatible devices to the HP Direct I/O backplane
(all RS-232-C or all RS-422). The MUX provides a Z-80A
microprocessor-based interface and accesses the 8K x 8 EPROM which
contains power-up, self-test, and code necessary to manage the onboard
FIFO buffers.
Data will be passed between the card and the host in circular FIFO
data buffers. This buffering scheme allows the host to receive multiple
characters per interrupt, thus decreasing the interrupt servicing
overhead of the host.
Functional Specifications
Capacity
Channels: 8 full duplex channels modem connect ports, with the
RS-232-C interface. Full duplex refers to the card's ability to
simultaneously transmit and receive data. However, this may be limited
by the half-duplex nature of the Direct I/O backplane.
Buffering: There are a total of sixteen circular FIFO data buffers;
eight (127 character) receive buffers and eight (16 character) transmit
buffers (one for each port).
Software: Supported on all HP 9000 Series 300 computers running
HP-UX version 6.5 or later.
Communications
Interface Level: RS-232-C, CCITT V.24 and V.28. RS-422, V.11.
Data Rates: Baud rate defaults to 9600 and is software programmable
to any of the following rates: 110, 134.5, 150, 300, 600, 1200, 2400,
4800, 7200, 9600, 19200.
Modem Support includes:
o 2 modem modes: simple and CCITT
o 2 senses: originate mode/auto answer mode
o Timers available:
CCITT Simple
Mode Mode
Connection timer X
DCD lost timer X
No-activity timer X
Hang-up timer X X
Supported Signal Lines - Table 1.
RS-232-C V.24 Default Description I/O
---------------------------------------------------------
AB 102 SG Signal Ground N/A
BA 103 SD Transmitted Data O
BB 104 RD Received Data I
CA 105 RS Request to Send O
CB 106 CS Clear to Send I
CC 107 DM Data Set Ready I
CD 108.2 TR Data Terminal Ready O
CF 109 RR Received Line I
Signal Detector
CH 111 SR Signal Rate Selector O
CE 125 IC Ring Indicator I
Throughput: The 98638A8-Channel MUX will support 8 interactive
terminal users running character mode at 19.2K baud. Other RS-232
applications which may simultaneously send and receive data over all
eight ports should be run at 9600 baud or slower. Aggregate MUX
throughput may be limited by the load present on the host processor.
Handshaking: The MUX card is capable of pacing both inbound and
outbound data via CTS handshaking or via an Xon/Xoff type of protocol.
The Xon/Xoff characters are software programmable and can be managed by
a user application. Alternatively, the host can program the MUX card to
automatically manage Xon/Xoff flow control, thus avoiding any character
loss. Since Xon/Xoff may be under application control, no-data-loss is
guaranteed only if the MUX is responsible for automatically managing
flow control. CTS handshaking is available on all ports. Simple or
unbuffered RS-232-C devices that use hardware handshaking can be
connected.
Communication Mode: Asynchronous, bit serial
Break Detection and Transmission: Break condition is recognized by
the interface and results in sending and interrupt to the host. Break
condition can also be generated by the MUX at the request of the host.
Interrupts
Host-to-Card (non-specific):
o Modem Output Change
o Timer Off/On
o Self-Test On
Host-to-Card (port-specific):
o Configuration Data Change
o Transmit Buffer not Empty
o Send Break
Card-to-Host (non-specific):
o Timer
o Interrupts host every 16 milliseconds. This signals the host to
receive any characters that might be in the receive buffers.
o Modem Input Change
o Self-Test Complete
Card-to-Host (port-specific):
o Special Character Received
o Received character matches host programmed bit map character.
o Buffer Empty
Edit Functions: Edit functions such as backspace, character delete,
and line delete are passed to the host and managed by the host
operating system.
Electrical Specification
Direct Current Requirements RS-232:
Typical Two-Standard
Voltage Current Deviation
Current
+5 1.8A 1.8A
+12 0.12A 0.14A
-12 0.12A -
RS-232 (Option 1C8):
Typical Two-Standard
Voltage Current Deviation
Current
+5 1.8A 1.88A
+12 0.30A 0.33A
-12 0.A
Total Power Consumption:
10 watts (maximum)
Physical Specifications
Dimensions: 290 mm (11.42 in) long, by 210 mm (8.27 in) wide.
Weight:
Interface Card, 580 grams (20.7 oz)
Cable and ADP panel, 740 grams (26.4 oz).
Environmental Characteristics
Operating Temperature: 0 degrees C to 70 degrees C (32 degrees F to
158F). It survives (non-operating) from -40 degrees C to 85
degrees C (-40 degrees F to 185 degrees F).
Operating Humidity: 5% to 95% Relative Humidity at 40 degrees C
(104 degrees F)
Ordering Information
98638A 8 Port MUX for S/300 DIO-II Systems. Eight port asynchronous MUX
with RS-232 interface and modem control on all ports. The base product
includes the printed circuit assembly, cables, installation manual, and
a distribution panel with an RS-232 interface.
Interface Option (optional)
This option replaces the RS-232 interface with an RS-422 interface.
1C8 RS-422 Interface
Media Options (must order one)
Software contains the Loopback Test Utility required for HP-UX 6.5
onwards, and 7.X. must order one option AA0 per system that is running
HP-UX 6.5 onwards, and 7.X. Option 1AW may be ordered for additional
MUX's on the same SPU.
AA0 1/4-inch Cartridge Tape. For HP-UX 6.5 onwards, and 7.X This
option is not required for HP-UX version 8.0 or later.
1AW Delete Software
This option should be ordered if the MUX is used with HP-UX 8.0 or
later.
Connection to RS-232 Modems
40233A 5-meter 25-pin M-25-pin M
Computer End Data Set End
Pin Number Pin Number
1 1
2 3
3 2
4 8
6 20
7 7
8 4
9 22
20 6
22 5
Related Products
Recommended Peripheral Cables
For direct connection to RS-232 terminals, printers, plotters, etc.
40234A 5-meter 25-pin M-25-pin M, pins 1-8, 20 wired end-to-end.
92219R 15-meter 25-pin Male to 25-pin Male direct connect cable
(98642-66507).
92219SD 5-meter 25-pin Male to 25-pin Male modem cable (98642-66506).
The cables listed above are available from the HP Direct Marketing
Division (DMK).
Self-test loopback connectors are available for optional use with
the on-card self-test. Order 5181-2030 EIA 25-pin Test Hood from the
HP Corporate Parts Center.
Recommended Modems
o HP 37212A Standalone Modem
o 92205A Hayes Smart Modem 1200
o Racal-Milgo MPS 1222 (Europe)
o US Robotics 2400 Baud
o Bell 212A
From HP Networking Communications Specifications Guide,
5091-3821E, 9205, p 029
Associated files: none
Direct I/O Asynchronous 8-Channel Multiplexer, Technical Data