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National Hybrid |
www.DaNtaMSAhueNTlettiH4I-UPOi-.crRRo.oNmDTetUomAascEoeoxtLtralpe'sDaSHTnaMhetdYaareenmBdBueiunaRMtsla4elIIsUnmDteo.,crrfyIoancmec.Version 2000.11.29
w November 2000
ww mThe information provided in this document is believed to be accurate; however, no responsibility is assumed by NATIONAL
oHYBRID, INC. for its use, and no license or rights are granted by implication or otherwise in connection therewith. Specifications
.care subject to change without notice.
t4U2200 Smithtown Avenue, Ronkonkoma, NY 11779
eeTelephone (631) 981- 2400 Data Bus Fax (631) 981- 2445
www.DataShWebsite http: //www.nationalhybrid.com
Email: [email protected]
TABLE OF CONTENTS
1.0.0
SCOPE .
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2.0.0
Nhi-RT PROTOCOL COMPLIANCE .
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3.0.0
INTRODUCTION
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3.1.0
FEATURES .
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3.1.1
GENERAL FEATURES
.....
3.1.2
REMOTE TERMINAL HIGHLIGHTS .
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3.2.0
BLOCK DIAGRAM .
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3.3.0
PROTOCOL CHIP DESCRIPTION .
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3.3.1
HOST BUS INTERFACE UNIT .
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3.3.2
I/O BUS INTERFACE UNIT .
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3.3.3
INTERRUPT CONTROL UNIT .
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3.3.3.1 ICU REGISTERS
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3.3.3.1.1 INTERRUPT DEFINITION TABLE . . . .
3.3.3.2 ICU FIFO
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3.3.4
DUAL REDUNDANT FRONT END .
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3.3.4.1 MANCHESTER DECODER . . . . .
3.3.4.2 MANCHESTER ENCODER . . . . .
3.3.4.3 GAP COUNTER
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3.3.4.4 RT - RT NO RESPONSE COUNTER . . . .
3.3.4.5 MINIMUM RESPONSE TIME COUNTER
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3.3.4.6 FAIL -SAFE TIMEOUT COUNTER . . . .
3.3.5
MESSAGE PROCESSOR UNIT
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3.4.0
RT HARDWIRE TERMINAL ADDRESS.
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4
4
4
4
4
5
6
6
7
7
7
7
7
8
8
8
9
9
9
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9
4.0.0
DATA STRUCTURE .
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. 10
4.1.0
ADDRESS MAP
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. 10
4.2.0
INTERNAL REGISTERS
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. 12
4.2.1
CONTROL .
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. 12
4.2.2
POINTER TABLE ADDRESS .
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. 13
4.2.3
BASIC STATUS
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. 14
4.2.4
INTERRUPT REQUEST
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. 15
4.2.5
INTERRUPT MASK .
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. 15
4.2.6
INTERRUPT VECTOR .
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. 15
4.2.7
AUXILIARY VECTOR REGISTER .
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. 15
4.2.8
REAL- TIME CLOCK .
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. 16
4.2.9
RTC CONTROL REGISTER .
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. 16
4.2.10 FIFO READ . . . . . . . 18
4.2.11 FIFO RESET . . . . . . . 18
4.2.12 LAST COMMAND REGISTER . . . . . 18
4.2.13 LAST STATUS REGISTER . . . . . 18
4.2.14 RESET REMOTE TERMINAL
. . . . 18
4.2.15 ENCODER STATUS . . . . . . 18
4.2.16 CONDITION REGISTER
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. 19
4.2.17 ENCODER DATA REGISTER
. . . . 19
4.2.18 ENCODER DATA TRANSMIT RQST . . . . 19
4.2.19 ENCODER COMMAND TRANSMIT REQUEST
. . 19
4.2.20 EXTERNAL TERMINAL ADDRESS REGISTER
. . 20
4.2.21 COMMAND OUTPUT PINS . . . . . 20
4.2.22 I/ O TAG WORD REGISTER . . . . . 20
4.2.23 CONFIGURATION REGISTER 1 . . . . 21
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