7 寄存器映射

表 7-14 列出了 AFEx82H1 寄存器的存储器映射寄存器。表 7-14 中未列出的所有寄存器偏移地址都视为保留的存储单元；请勿修改这些寄存器内容。

表 7-1 寄存器映射

ADDR（十六进制）	寄存器	位说明
ADDR（十六进制）	寄存器	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
00h	NOP	NOP [15:0]
01h	DAC_DATA	DATA [15:0]
02h	CONFIG	CRC_ERR_CNT [1:0]		CLKO [3:0]				UBM_ IRQ_EN	IRQ_ PIN_EN	CLR_ PIN_EN	UART_DIS	UART_ BAUD	CRC_EN	IRQ_POL	IRQ_LVL	DSDO	FSDO
03h	DAC_CFG	RESERVED			PD	SR_CLK [2:0]			SR_STEP [2:0]			SR_EN	SR_MODE	RESERVED	CLR	RESERVED
04h	DAC_GAIN	GAIN [15:0]
05h	DAC_OFFSET	OFFSET [15:0]
06h	DAC_CLR_ CODE	CODE [15:0]
07h	RESET	RESERVED								SW_RST [7:0]
08h	ADC_CFG	BUF_PD	HYST [6:0]							FLT_CNT [2:0]			AIN_ RANGE	EOC_ PER_CH	CONV_RATE [1:0]		DIRECT_ MODE
09h	ADC_INDEX_ CFG	RESERVED								STOP [3:0]				START [3:0]
0Ah	TRIGGER	RESERVED												RBIST	MBIST	SHADOW LOAD	ADC
0Bh	SPECIAL_ CFG ⁽¹⁾	RESERVED													OTP_ LOAD_ SW_RST	ALMV_ POL	AIN1_ENB
0Eh	MODEM_CFG	Tx2200Hz	RESERVED		DUPLEX_ EXT	RX_ HORD_EN	RX_EXT FILT_EN	TxRES	TxAMP [4:0]					HART_EN	双工	TxHPD	RTS
0Fh	FIFO_CFG	RESERVED						FIFO_H2U_FLUSH	FIFO_U2H_FLUSH	H2U_LEVEL_SET [3:0]				U2H_LEVEL_SET [3:0]
10h	ALARM_ACT	SD_FLT [1:0]		TEMP_FLT [1:0]		AIN1_FLT [1:0]		AIN0_FLT [1:0]		CRC_WDT_FLT [1:0]		VREF_FLT [1:0]		THERM_ERR_FLT [1:0]		THERM_WARN_FLT [1:0]
11h	WDT	RESERVED										WDT_UP [2:0]			WDT_LO [1:0]		WDT_EN
12h	AIN0_ THRESHOLD	Hi [7:0]								Lo [7:0]
13h	AIN1_ THRESHOLD	Hi [7:0]								Lo [7:0]
14h	TEMP_ THRESHOLD	Hi [7:0]								Lo [7:0]
15h	FIFO_U2H_WR	RESERVED							奇偶校验	数据 [7:0]
16h	UBM ⁽²⁾	RESERVED															REG_ MODE
18h	SCRATCH	DATA [15:0]
19h	CHIP_ID_LSB	ID [15:0]
1Ah	CHIP_ID_MSB	ID [15:0]
1Bh	GPIO_CFG	RESERVED	EN [6:0]							RESERVED	ODE [6:0]
1Ch	GPIO	RESERVED									DATA [6:0]
1Dh	ALARM_ STATUS_MASK	RESERVED		SD_FLT	OSC_FAIL	RESERVED			OTP_ CRC_ERR	CRC_FLT	WD_FLT	VREF_FLT	ADC_ AIN1_FLT	ADC_ AIN0_FLT	ADC_ TEMP_ FLT	THERM_ ERR_FLT	THERM_ WARN_ FLT
1Eh	GEN_ STATUS_MASK	RESERVED					BIST_ DONE	BIST_ FAIL	RESERVED	SR_ BUSYn	ADC_ EOC	RESERVED		BREAK_ FRAME_ ERR	BREAK_ PARITY_ ERR	UART_ FRAME_ ERR	UART_ PARITY_ ERR
1Fh	MODEM_ STATUS_MASK	RESERVED			GAP_ ERR	FRAME_ ERR	PARITY_ ERR	FIFO_H2U _LEVEL_ FLAG	FIFO_H2U _FULL_ FLAG	FIFO_H2U _EMPTY_ FLAG	FIFO_U2H _LEVEL_ FLAG	FIFO_U2H _FULL_ FLAG	FIFO_U2H _EMPTY_ FLAG	CD_DE ASSERT	CD_ ASSERT	CTS_DE ASSERT	CTS_ ASSERT
20h	ALARM_ STATUS	GEN_ IRQ	MODEM_ IRQ	SD_FLT	OSC_FAIL	CRC_CNT [1:0]		OTP_ LOADEDn	OTP_ CRC_ERR	CRC_FLT	WD_FLT	VREF_FLT	ADC_ AIN1_FLT	ADC_ AIN0_FLT	ADC_ TEMP_ FLT	THERM_ ERR_FLT	THERM_ WARN_ FLT
21h	GEN_ STATUS	ALARM_ IRQ	MODEM_ IRQ	RESERVED	OTP_ BUSY	BIST_ MODE	BIST_ DONE	BIST_ FAIL	复位	SR_ BUSYn	ADC_ EOC	ADC_ BUSY	PVDD_HI	BREAK_ FRAME_ ERR	BREAK_ PARITY_ ERR	UART _FRAME _ERR	UART_ PARITY_ ERR
22h	MODEM_ STATUS	ALARM_ IRQ	GEN_ IRQ	RESERVED	GAP_ ERR	FRAME_ ERR	PARITY _ERR	FIFO_H2U _LEVEL_ FLAG	FIFO_H2U _FULL_ FLAG	FIFO_H2U _EMPTY_ FLAG	FIFO_U2H _LEVEL_ FLAG	FIFO_U2H _FULL_ FLAG	FIFO_U2H _EMPTY_ FLAG	CD_DE ASSERT	CD_ ASSERT	CTS_DE ASSERT	CTS_ ASSERT
23h	ADC_FLAGS	RESERVED							SD4_FAIL	SD3_FAIL	SD2_FAIL	SD1_FAIL	SD0_FAIL	TEMP_ FAIL	AIN1_ FAIL	AIN0_ FAIL	RESERVED
24h	ADC_AIN0	RESERVED				DATA [11:0]
25h	ADC_AIN1	RESERVED				DATA [11:0]
26h	ADC_TEMP	RESERVED				DATA [11:0]
27h	ADC_SD_MUX	RESERVED				DATA [11:0]
28h	ADC_OFFSET	RESERVED				DATA [11:0]
2Ah	FIFO_H2U_RD	LEVEL [3:0]				LEVEL_ FLAG	FULL_ FLAG	EMPTY_ FLAG	奇偶校验	数据 [7:0]
2Bh	FIFO_STATUS	H2U_LEVEL [3:0]				H2U _LEVEL_ FLAG	H2U _FULL_ FLAG	H2U _EMPTY_ FLAG	RESERVED	U2H_LEVEL [3:0]				U2H _LEVEL_ FLAG	U2H _FULL_ FLAG	U2H _EMPTY_ FLAG	RESERVED
2Ch	DAC_OUT	DATA [15:0]
2Dh	ADC_OUT	RESERVED				DATA [11:0]
2Eh	ADC_BYP	DATA_ BYP_EN	OFST_ BYP_EN	DIS_GND_ SAMP	RESERVED	DATA [11:0]
2Fh	FORCE_FAIL	CRC_FLT	VREF_FLT	THERM_ ERR_FLT	THERM_ WARN_ FLT	RESERVED		SD4_HI_ FLT	SD4_LO_ FLT	SD3_HI_ FLT	SD3_LO_ FLT	SD2_HI_ FLT	SD2_LO_ FLT	SD1_HI_ FLT	SD1_LO_ FLT	SD0_HI_ FLT	SD0_LO_ FLT
3Bh	TIMER_CFG_0	RESERVED												CLK_SEL [1:0]		INVERT	ENABLE
3Ch	TIMER_CFG_1	PERIOD [15:0]
3Dh	TIMER_CFG_2	SET_TIME [15:0]
3Eh	CRC_RD	CRC [15:0]
3Fh	RBIST_CRC	CRC [15:0]

(1) SPECIAL_CFG 寄存器只能使用 POR 进行复位，不会对 RESET 引脚或 SW_RST 命令做出响应。

(2) UBM 寄存器只能由 UBM 命令进行访问。