SoundTraxx DSD-150/DSX Technical Reference - Manual (Page 21)

Address Mode Direct Mode
Register Mode Ops Mode Short Form
Paged Mode Ops Mode Long Form
Digital Sound Decoder Technical Reference 21
CV 29
CONFIGURATION
REGISTER 1
Description
CV 29 contains miscellaneous decoder configuration bits:
bit 7 bit 0
0 N/A EAM STE ACK APS FL DIR
Bit 0: DIR, Direction Bit
0 = normal operation
1 = direction bit in Speed/Direction instruction is inverted before processing.
Bit 1: FL, FL Location
0 = FL state is controlled by bit 4 of Speed/Direction Instruction (14 Speed
Step Mode)
1 = FL state is controlled by bit 4 of Function Group 1 Instruction (28 and
128 Speed Step Modes)
Bit 2: APS, Alternate Power Source enable (not used)
0 = NMRA Digital Only
1 = Alternate Power Source enabled as set by CV 12
Bit 3: ACK, Advanced Acknowledge Mode enable (not used)
0 = Advanced Acknowledge mode disabled.
1 = Advanced Acknowledge mode enabled.
Bit 4: STE, Speed Table Enable
0 = Speed Table not used.
1 = Use custom speed table selected by CV 25.
Bit 5: EAM, Extended Address Mode enable
0 = Decoder responds to Primary Address in CV 1
1 = Decoder responds to Extended Address in CV 17-18
Bit 6: Reserved for future use.
Bit 7: Multifunction Decoder - Always reads as 0.
When the DIR bit is set, the locomotive and headlight will run in a direction opposite to the speed/
direction instruction received. This bit is mostly useful for diesel locomotives that are run long
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