Where to find the specification of SG2042?

I’m writing some codes using RISC-V vector extension. But I had not found any detailed data about the vector extension of SG2042. I just know that SG2042 follows 0.7.1 riscv-v-extension. Where could I find the specification of SG2042 CPU, so that I can get the detailed parameters such as the width and count of the vector register?

pls: SG2042-TRM.pdf

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Thanks!!! God bless you!