AU1000_SYS_PINFUNC
alchemy_wrsys(SYS_PF_NI2, AU1000_SYS_PINFUNC);
pin_func = alchemy_rdsys(AU1000_SYS_PINFUNC) & ~SYS_PF_UR3;
alchemy_wrsys(pin_func, AU1000_SYS_PINFUNC);
if (!(alchemy_rdsys(AU1000_SYS_PINFUNC) & SYS_PF_NI2)) {
sleep_sys_pinfunc = alchemy_rdsys(AU1000_SYS_PINFUNC);
alchemy_wrsys(sleep_sys_pinfunc, AU1000_SYS_PINFUNC);
pfc = alchemy_rdsys(AU1000_SYS_PINFUNC);
alchemy_wrsys(pfc, AU1000_SYS_PINFUNC);
pfc = alchemy_rdsys(AU1000_SYS_PINFUNC);
alchemy_wrsys(pfc, AU1000_SYS_PINFUNC);
pfc = alchemy_rdsys(AU1000_SYS_PINFUNC) & ~SYS_PINFUNC_P0A;
alchemy_wrsys(pfc, AU1000_SYS_PINFUNC);
v = alchemy_rdsys(AU1000_SYS_PINFUNC);
alchemy_wrsys(v | 1 | SYS_PF_PSC1_S1, AU1000_SYS_PINFUNC);