Tascam US-428 - Page 76

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A data wheel is provided for general-purpose parameter modification. In addition to the aux-send
level setting described above, the data could be used for scrubbing, locating, or any other
purpose the application programmer desires.
US-428 to Host Commands:
1. AUX_SWITCH
a. Button-down: BF 3x 7F
b. Button-up: BF 3x 00, where x=[0..3] (for AUX1, AUX2, AUX3, AUX4)
2. ASN_SWITCH
a. Button-down: BF 34 7F
b. Button-up: BF 34 00
3. FN_SWITCH
a. Button-down: BF 3x 7F
b. Button-up: BF 3x 7F, where x=[5..7] (for FN1, FN2, FN3)
4. DATA_WHEEL (identical to JL Cooper CS-10)
a. BF 60 vv, vv = 2's complement using 7 data bits
Host to US-428 Messages:
1. UPDATE_AUX_FN_LED: F0 4E<UNIT> 12 0D<AUX#> <STATE> F7
2. UPDATE_FN_LED: F0 4E<UNIT> 12 0E <FN#> <STATE>F7
3. UPDATE_ASN_LED: F0 4E<UNIT> 12 0F<STATE> F7
where
<AUX> is in the range [0...3] corresponding to LED's [AUX1·AUX4]
<FN#> is in the range [0...2] corresponding to LED's [FN1·FN3]
<UNIT> Transmit as 0 for now.
<STATE> is either 0x00 (LED OFF) or 0x7F (LED ON)
.