网上找不到pm544的芯片资料，从Android libnfc-nxp原码分析出来的，pn544与pn532完全不一样，按标准走了HCP协议。
/* Commands from ETSI HCI Specification */#define WR_XCHGDATA 0x10U
/* NXP Additional Commands apart from ETSI HCI Specification *//* Command to Check the presence of the card */#define NXP_WR_PRESCHECK 0x30U
/* Command to Activate the next card present in the field */#define NXP_WR_ACTIVATE_NEXT 0x31U
/* Command to Activate a card with its UID */#define NXP_WR_ACTIVATE_ID 0x32U
/* Command to Dispatch the card to UICC */#define NXP_WR_DISPATCH_TO_UICC 0x33U
/* NXP Additional Events apart from ETSI HCI Specification *//* Event to Release the Target and Restart The Wheel */#define NXP_EVT_RELEASE_TARGET 0x35U
#define NXP_WRA_CONTINUE_ACTIVATION 0x12U#define NXP_MIFARE_RAW 0x20U#define NXP_MIFARE_CMD 0x21U
/* Felica read write commands */#define NXP_FELICA_RAW 0x20U#define NXP_FELICA_CMD 0x21U
#define NXP_ISO15693_CMD 0x20U
/* Jewel read write commands */#define NXP_JEWEL_RAW 0x23U
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