XMOS VocalFusion XVF3510, Руководство пользователя

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XM-014232-PC 46
4.4.1. SIGNAL ROUTING AND SCALING
The following controls are provided for configuring the signal control blocks.
Table 4-8 I/O Mapping Commands
COMMAND TYPE ARGS DEFINITION
SET_IO_MAP uint8 2
Configures the two input switches and four output switches. See
Destination and Source index table for valid argument options.
arg1 <Destination Index>
arg2 <Source Index>
SET_OUTPUT_SHIFT int32 2
Sets the gain for each mux block. Select mux block Destination Index
followed by shift (+ve is left, -ve is right shift)
arg1 <Destination Index>
arg2 <shift value>
GET_IO_MAP_AND_SHIFT uint32 6 x 3 Get all 18 IO_MAP and OUTPUT_SHIFT values for all Destinations.
SET_MIC_SHIFT_SATURATE
GET_MIC_SHIFT_SATURATE
uint32 2
Sets the gain on the raw mic signals before entering the pipeline.
arg1 <shift value (left shift)>
arg2 <saturate, enable if =1>
Where the Destination channels available to be mapped are referenced as follows:
Table 4-9 I/O Mapping Destination Indexes
CHANNEL (DESTINATION) VALUE DEFINITION
USB_FROM_DEVICE_0 0 USB channel 0 output from device to host
USB_FROM_DEVICE_1 1 USB channel 1 output from device to host
I2S_FROM_DEVICE_0 2 I2S channel 0 output from device
I2S_FROM_DEVICE_1 3 I2S channel 1 output from device
REF_TO_PIPELINE_0 4 reference channel 0 going into the pipeline
REF_TO_PIPELINE_1 5 reference channel 1 going into the pipeline
Sources available to be mapped to destination are referenced as follows:
Table 4-10 I/O Mapping Source Indexes
CHANNEL (SOURCE) VALUE DEFINITION
NONE 0 Zeros becomes the input to the destination this source value is used.
USB_TO_DEVICE_AVERAGE 1 Average of USB input from host to device.