U20_DESC
SIG_EXPR_DECL_SINGLE(ROMD7, ROM8, U20_DESC, VPOOFF0_DESC);
SIG_EXPR_DECL_SINGLE(ROMD7, ROM16, U20_DESC, VPOOFF0_DESC);
SIG_EXPR_DECL_SINGLE(ROMD7, ROM16S, U20_DESC, VPOOFF0_DESC);
SIG_EXPR_DECL_SINGLE(VPOCLK, VPO12, U20_DESC, VPO12_DESC);
SIG_EXPR_DECL_SINGLE(VPOCLK, VPO24, U20_DESC, VPO24_DESC);
SIG_EXPR_DECL_SINGLE(VPOB8, VPO, U20_DESC, VPO_DESC, CRT_DVO_EN_DESC);
SIG_EXPR_DECL_SINGLE(VPOB8, VPOOFF1, U20_DESC, VPOOFF1_DESC, CRT_DVO_EN_DESC);
SIG_EXPR_DECL_SINGLE(VPOB8, VPOOFF2, U20_DESC, VPOOFF2_DESC, CRT_DVO_EN_DESC);