SIO_PDR_MD4_CFG__A
rc = drxj_dap_write_reg16(dev_addr, SIO_PDR_MD4_CFG__A, sio_pdr_md_cfg, 0);
rc = drxj_dap_write_reg16(dev_addr, SIO_PDR_MD4_CFG__A, 0x0000, 0);
rc = drxj_dap_write_reg16(dev_addr, SIO_PDR_MD4_CFG__A, 0x0000, 0);
status = write16(state, SIO_PDR_MD4_CFG__A, 0x0000);
status = write16(state, SIO_PDR_MD4_CFG__A,
status = write16(state, SIO_PDR_MD4_CFG__A, 0x0000);