FUSB302MPX. datasheet(28/35 Pages) ONSEMI

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FUSB302

• Rev. 2

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Table 25. Status0

Address: 40h

Reset Value: 0x0000_0000

Type: Read

Bit #

Name

R/W/C

Size (Bits)

Description

VBUSOK

1: Interrupt occurs when VBUS transitions through vVBUSthr.

This bit typically is used to recognize port partner during

startup.

ACTIVITY

1: Transitions are detected on the active CC* line. This bit goes

high after a minimum of 3 CC transitions, and remains high for

tACTIVITY after last transition on CC.

0: inactive.

COMP

1: Measured CC* input is higher than reference level driven

from the MDAC.

0: Measured CC* input is lower than reference level driven

from the MDAC.

CRC_CHK

1: Indicates the last received packet had the correct CRC. This

bit remains set until the SOP of the next packet.

0: Packet received for an enabled SOP* and CRC for the

enabled packet received was incorrect

ALERT

1: Alert software an error condition has occurred. An alert is

caused by:

TX_FULL: the transmit FIFO is full.

RX_FULL: the receive FIFO is full.

See Status1 bits

WAKE

1: Voltage on CC indicated a device attempting to attach.

0: WAKE either not enabled (WAKE_EN=0) or no device

attached.

1:0

BC_LVL[1:0]

Current voltage status of the measured CC pin interpreted as

host current levels as follows:

00: < 200 mV

01: >200 mV, <660 mV

10: >660 mV, <1.23 V

11:>1.23 V

Note the software must measure these at an appropriate time,

while there is no signaling activity on the selected CC line.

BC_LVL is only defined when Measure block is on which is

when register bits PWR[2]=1 and either MEAS_CC1=1 or

MEAS_CC2=1

Table 26. Status1

Address: 41h

Reset Value: 0x0010_1000

Type: Read

Bit #

Name

R/W/C

Size (Bits)

Description

RXSOP2

1: Indicates the last packet placed in the RxFIFO

is type SOP’’

(SOP double prime).

RXSOP1

1: Indicates the last packet placed in the RxFIFO

is type SOP’

(SOP prime).

RX_EMPTY

1: The receive FIFO is empty.

RX_FULL

1: The receive FIFO is full.

TX_EMPTY

1: The transmit FIFO is empty.

TX_FULL

1: The transmit FIFO is full.

OVRTEMP

1: Temperature of the device is too high.

OCP

1: Indicates an over-current or short condition has occurred on

the VCONN switch.

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