Aim MIL-STD-1553 - Page 225

MIL-STD-1553 Reference Manual
211
Chapter 7 – Bus Controller Functions
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Dynamic Data Word Generation Function
Value
Constant
Description
0
1
2
3
4
5
6
API_DYTAG_FCT_DISABLE
API_DYTAG_FCT_POS_RAMP
API_DYTAG_FCT_NEG_RAMP
API_DYTAG_FCT_POS_TRIANGLE
API_DYTAG_FCT_NEG_TRIANGLE
API_DYTAG_FCT_XMT_WORD
API_DYTAG_FCT_SYNC_COUNTER
Disable
Positive Ramp Function
Negative Ramp Function
Positive Triangle Function
Negative Triangle Function
Transmit Data Word from
specified Data Buffer ID
Transmit Synchronisation
Counter value (see also
ApiCmdSyncCounterGet / Set).
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‘tag_fct’
Value
Description
1..4
0..n
Lower Limit of the dynamic Data Word
5
0..2047
Data Buffer Identifier
6
0
Reserved (0)
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‘tag_fct’
Value
Description
1..4
0..n
Upper Limit of the dynamic Data Word
5
0..31
Word Position of the Data Buffer Word to transmit
6
0
Reserved(0)
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‘tag_fct’
Value
Description
1..4
0..n
Stepsize used to increment or decrement the dynamic Data Word
5,6
0
Reserved
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‘tag_fct’
Value
Description
1..6
0..31
Word Position of the Data Buffer Word
Parameter description for Tagging Mode (‘mode’ = 1)
Note: Applicable for up to 4 dynamic words (‘bc_dytag[0..3]’!
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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