Cirrus-logic CS44600 Uživatelský manuál stáhnout pdf (Strana 64)

64 DS633F1

CS44600

7.23 Channel Over Flow Status (address 2Bh) (Read Only)

For all bits in this register, a ‘1’ means the associated condition has occurred at least once since the register

was last read. A ‘0’ means the associated condition has NOT occurred since the last reading of the register.

Reading the register resets all bits to 0 if the Overflow Level/Edge interrupt type is set to “edge trigger”.

These channel overflow status bits are not effected by the interrupt mask bit, M_OVFL_INT. The overflow

condition of each channel can be polled instead of generating an interrupt as required.

7.23.1 ChXX_OVFL

Default = 0

Function:

When high, indicates that the magnitude of the current output sample on the associated channel has ex-

ceeded full scale and has been clipped to positive or negative full scale as appropriate.

7.24 GPIO Pin In/Out (address 2Ch)

7.24.1 GPIO In/Out Selection (GPIOX_I/O)

Default = 0

0 - General Purpose Input

1 - General Purpose Output

Function:

General Purpose Input

- The pin is configured as an input.

General Purpose Output

- The pin is configured as a general purpose output.

7.25 GPIO Pin Polarity/Type (address 2Dh)

7.25.1 GPIO Polarity/Type Selection (GPIOX_P/T)

Default = 1

Function:

General Purpose Input

- If the pin is configured as an input, this bit defines the input polarity (0 = Active

Low, 1 = Active High).

General Purpose Output

- If the pin is configured as a general purpose output, this bit defines the GPIO

output type (0 = CMOS, 1 = OPEN-DRAIN).

76543210

RESERVED RESERVED CHB3_OVFL CHA3_OVFL CHB2_OVFL CHA2_OVFL CHB1_OVFL CHA1_OVFL

76543210

RESERVED GPIO6_I/O GPIO5_I/O GPIO4_I/O GPIO3_I/O GPIO2_I/O GPIO1_I/O GPIO0_I/O

76543210

RESERVED GPIO6_P/T GPIO5_P/T GPIO4_P/T GPIO3_P/T GPIO2_P/T GPIO1_P/T GPIO0_P/T

1 2 ... 59 60 61 62 63 64 65 66 67 68 69 ... 75 76

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Cirrus-logic CS44600 Uživatelský manuál Strana 64