FUSB308B datasheet(31/53 Pages) ONSEMI

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FUSB308B

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Table 18. ALERTH

Address: 11h

Reset Value: 0x00

Type: Read, Write 1 to Clear

Bit #

Name

R/W/C

Size (Bits)

ALERT2 Description

I_VS_ALERT

RWC

Vendor Defined Alert

0b: Cleeared

1b: A Vendor Defined Alert occurred. Please read

ALERT_VD register

6:4

Reserved

Reserved: 000b

I_VBUS_SNK_DISC

RWC

VBUS Sink Disconnect Detected

0b: Cleared

1b: A VBUS Sink Disconnect Threshold crossing from High to Low

has been detected

I_RX_FULL

RWC

Rx Buffer Overflow

0b: Internal RX Buffer is functioning properly

1b: Internal RX Buffer has overflowed

Note: This interrupt indicates overflow of the internal buffer, not the

RXDATA space. To clear overflow condition, write to ALERTL.I_RX-

STAT

Writing a 1 to this register acknowledges the overflow.

The actual overflow is cleared by writing to ALERTL. I_RXSTAT

I_FAULT

(Note 17)

R/WC

Fault Alarm

0b: Cleared

1b: A Fault alarm has occurred. Read FAULTSTAT register

I_VBUS_ALRM_LO

R/WC

Voltage Alarm Lo

0b: Cleared

1b: A low−voltage alarm has occurred

17.ALERTH.I_FAULT is asserted if the bit−wise AND of FAULTSTAT and FAULTSTAMSK results in any bits that have the value 1.

Table 19. ALERTMSKL

Address: 12h

Reset Value: 0xFF (Resets on POR, SW_RST and Hard Reset)

Type: Read/Write

Bit #

Name

R/W/C

Size (Bits)

Alert Mask 1 Description

M_VBUS_ALRM_HI

R/W

0b: Interrupt masked

1b: Interrupt unmasked

M_TXSUCC

R/W

0b: Interrupt masked

1b: Interrupt unmasked

M_TX_DISC

R/W

0b: Interrupt masked

1b: Interrupt unmasked

M_TXFAIL

R/W

0b: Interrupt masked

1b: Interrupt unmasked

M_RXHRDRST

R/W

0b: Interrupt masked

1b: Interrupt unmasked

Note: Generally this interrupt should not be masked.

M_RXSTAT

R/W

0b: Interrupt masked

1b: Interrupt unmasked

M_PORT_PWR

R/W

0b: Interrupt masked

1b: Interrupt unmasked

M_CCSTAT

R/W

0b: Interrupt masked

1b: Interrupt unmasked

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