SoundTraxx SoundCar Technical Reference - Manual (Page 21)

Tsunami SoundCar Technical Reference Page 19
Primary CVs
CV 29
Configuration Register 1
Description
CV 29 contains miscellaneous decoder configuration bits.
DIR: Direction
0 = Normal operation
1 = Direction bit in speed/direction instruction is inverted
before processing
F0: F0 Location
0 = F0 state is controlled by bit 4 of speed/direction
instruction (14 speed-step mode)
1 = F0 state is controlled by bit 4 of Function Group 1
(28 and 128 speed-step modes)
APS: Alternate Power Source Enable
0 = NMRA digital only
1 = Alternate power source enabled as set by CV 12
ACK: Advanced Acknowledgment Mode Enable (not used)
EAM: Extended Address Mode Enable
0 = Decoder responds to primary address in CV 1
1 = Decoder responds to extended address in
CVs 17 and 18
MD: Multifunction Decoder (always reads as 0)
0: Not used. Must be set to 0.
F0 (bit 1) should be cleared to 0 if you are using 14 speed-step mode. For 28
or 128 speed-step mode, bit 1 should be set to 1.
APS (bit 2) must be set to 1 in order to activate an alternate power mode
as programmed into CV 12 (Power Source Conversion). To activate analog
mode, CV 12 must be set to 1.
ACK (bit 3) will always read as 0 because the decoder does not support
advanced acknowledgment.
Bit 7 Bit 0
MD 0 EAM 0 ACK APS F0 DIR