TDA2EXEVM: TIDL convolution num_output: 4 error

I am runing the usecase of TIDL I/O.

I can NOT run the model, because the "num_output" value is 4.

When I change the value,  it can run successful

vsdk 3.02

tidl REL.TIDLSRC.01.00.00.00

deploy.prototxt

name: "deploy"
input: "data"
input_shape {
dim: 1
dim: 3
dim: 256
dim: 512
}
layer {
name: "conv1"
type: "Convolution"
bottom: "data"
top: "conv1"
param {
lr_mult: 1.0
decay_mult: 1.0
}
param {
lr_mult: 2.0
decay_mult: 0.0
}
convolution_param {
num_output: 4 ##
pad: 1
kernel_size: 3
stride: 1
weight_filler {
type: "msra"
}
bias_filler {
type: "constant"
value: 0.0
}
}
}