SN250 datasheet(111/130 Pages) STMICROELECTRONICS

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SN250

Functional description—application modules

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7.5.1

Registers

ADC_CFG [0x4902]

ADC_DATA [0x4900]

7.6

Event manager

The XAP2b core supports one IRQ and one wake-up input; however, the SN250 contains an

advanced Event Manager that takes IRQ and WAKE_UP signals from a variety of internal

and external sources and provides them to the XAP2b. The Event Manager allows for each

event to be separately masked and cleared by the CPU, and ensures that all events are

serviced properly and promptly.

Event sources include:

●

Timer events

●

GPIO events

●

SC1 and SC2 events

●

ADC

●

System-mode sources (MAC, Watchdog, etc.)

0-R

0-RW

ADC_RATE

ADC_SEL

ADC_DITH

ADC_EN

0-R

0-RW

ADC_RATE

[14:12]

ADC conversion rate selection. Refer to Table 33 for details.

ADC_SEL

[11:8]

ADC input selection. Refer to Table 34 for details.

ADC_DITH

[1]

Set this bit to disable dither.

ADC_EN

[0]

Set this bit to enable the ADC.

0-R

ADC_DATA

0-R

ADC_DATA

[15:0]

ADC sample value. Refer to Table 33 and Table 35 for details.

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