FUSB308B datasheet(45/53 Pages) ONSEMI

45 / 53 page

FUSB308B

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Table 49. VBUS_VOLTAGE_L

Address: 70h

Reset Value: 0x00

Type: Read

Bit #

Name

R/W/C

Size (Bits)

VBUS Voltage Low Description

Byte 27:0

TX_Data27..0

TX Payload

Table 50. VBUS_VOLTAGE_H

Address: 71h

Reset Value: 0x00

Type: Read

Bit #

Name

R/W/C

Size (Bits)

VBUS Voltage High Description (Note 35)

7:4

Reserved

Reserved: 0000b

3:2

VBUS_SCALE

00b: VBUS Measurement not scaled

01b: VBUS Measurement divided by 2

10b: VBUS Measurement divided by 4

11b: Reserved

VBUS_V_BIT9

Bit 9 of VBUS Measurement

VBUS_V_BIT8

Bit 8 of VBUS Measurement

35.VBUS_V_BIT[9:0] is the measured VBUS voltage divided by VBUS_SCALE factor.

Table 51. VBUS_SNK_DISCL

Address: 72h

Reset Value: 0xA0 (< vSafe5V: 4.0 V)

Type: Read/Write

Bit #

Name

R/W/C

Size (Bits)

VBUS SINK Disconnect Threshold Low (Note 36)

7:0

VBUS_SNK_DISC

R/W

Bits 7:0 of Sink Disconnect threshold

36.Accuracy is set for 50 mV LSB and Bit 0 is ignored.

Table 52. VBUS_SNK_DISCH

Address: 73h

Reset Value: 0x00

Type: Read/Write

Bit #

Name

R/W/C

Size (Bits)

VBUS SINK Disconnect Threshold High

7:2

Reserved

Reserved: 000000b

1:0

VBUS_SNK_DISC

R/W

Bits 9:8 of Sink Disconnect threshold

Table 53. VBUS_STOP_DISCL

Address: 74h

Reset Value: 0x1C (< vSafe0V: 700 mV)

Type: Read/Write

Bit #

Name

R/W/C

Size (Bits)

VBUS Stop Discharge Threshold Low (Note 37)

7:0

VBUS_VTH_LO

R/W

Bits 7:0 of Stop Discharge threshold

37.Accuracy is set for 50 mV LSB and Bit 0 is ignored.

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