Aim MIL-STD-1553 - Page 221

MIL-STD-1553 Reference Manual
207
Chapter 7 – Bus Controller Functions
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Dynamic Data Word Generation Function utilizes an incrementer by 1 to modify the data word
at the location specified. An initial value of the incremented data word/byte can be specified.
Bit
Value
Constant
Description
15..8
0
Reserved
7
0
API_DYTAG_DIRECT_MODIFY
Direct Data Buffer Modification
The function modifies the Data
Word in the Transfer Data Buffer.
1
API_DYTAG_FUNCTION_MODIFY
Function Data Word Modification
The function is applied to the
Function Word ‘min’ which is written
to the Transfer Data Buffer.
6..0
0
1
2
3
API_DYTAG_FCT_DISABLE
API_DYTAG_FCT_SAWTOOTH_16
API_DYTAG_FCT_SAWTOOTH_8_LOW
API_DYTAG_FCT_SAWTOOTH_8_HIGH
Disable
16-bit Sawtooth
8-bit Sawtooth in Data Bits 7..0
8-bit Sawtooth in Data Bits 15..8
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Value
Description
0..n
Initial value of dynamic Function Word
Note: Only applicable if ‘tag_fct’-Bit 7 = 1!
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Value
Description
0
Reserved
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Value
Description
0
Reserved
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1
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w
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Value
Description
0..31
Word Position of the dynamic Data Word
O
O
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u
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p
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o
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e
e
Return Value
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6
All API functions return API_OK if no error occurred. If the return value is not equal
to API_OK the function ApiGetErrorDescription can be used to obtain an error
description.