FUSB307BVMPX datasheet(9/57 Pages) ONSEMI

9 / 57 page

FUSB307B

www.onsemi.com

Figure 8. DRP Initialization and Connection Detection

Set FUSB305B to DRP

Write:

ROLECTRL.DRP = 1b

ROLECTRL.CC2 = 01b or 10b

ROLECTRL.CC1 = 01b or10b

ROLECTRL.CC1 = ROLECTRL.CC2

PWRCTRL.AUTO_DISCH = 0b

COMMAND.LOOK4CON

No Connection

Monitor for

Alert

ALERT.CCSTAT = 1b?

DRP Toggling

Set CCSTAT.LOOK4CON = 1b

DrpToggleFlag = 1b

Start DRP Toggling

Monitor for a Connection

Potential Connect As Source

Either CC = Src.Rd or Both CC = Src.Ra

for > tTCPCFilter

Potential Connect As Sink

Either CC != Snk.Open

for > tTCPCFilter

Set Source Status

CCSTAT.LOOK4CON = 0b

CCSTAT.CON_RES = 0b

Stop Toggling Rp/Rd

Apply Rp

Set Sink Status

CCSTAT.LOOK4CON = 0b

CCSTAT.CON_RES = 1b

Stop Toggling Rp/Rd

Apply Rd

Interrupt

Set

ALERT.CCSTAT = 1b

Read ALERT

Service other

ALERTS

Read CCSTAT

CCSTAT.LOOK4CON = 0b?

Debounce CC Status

Read CCSTAT and debounce for

tCCDebounce

Determine CC & VCONN

Write:

ROLECTRL.CC1 & CC2 per decision

Set PWRCTRL.AUTO_DISCH

TCPC_CTRL.ORIENT

PWRCTRL.EN_VCONN

Clear ALERT.CCSTAT

Connection Established

Monitor for ALERT

Monitor for a disconnect

Yes

FUSB307B

TCPM

Connection

Enable VBUS and VCONN

Write COMMAND to Source/Sink Vbus per decision

Check PWRSTAT.VBUS_VAL = 1b

Check PWRSTAT.VCONN_VAL = 1b

FUSB307BVMPX Datasheet(PDF) 9 Page - ON Semiconductor

FUSB307BVMPX Datasheet(HTML) 9 Page - ON Semiconductor

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57

Datasheet Download

Link URL