USB3813 datasheet(40/68 Pages) SMSC

40 / 68 page

USB 2.0 Hi-Speed 3-Port Hub Controller Optimized for Portable Applications

Datasheet

Revision 1.0 (06-17-13)

SMSC USB3813

DATASHEET

Note: Refer to Section 8.9, "Interrupt Output (INT_N)," on page 56 for additional information on the

INT_N interrupt.

Table 7.8 Serial Port Interrupt Mask Register

PrtPwrInt

R/W

Read:

0: Port Power Status Register has not been updated since last PrtPwrInt

reset

1: Port Power Status Register has been updated

Write:

0: Negate PrtPwrInt status low

1: No Effect

ChrgDetInt

R/W

Read:

0: Charge detect has not been updated since last ChrgDetInt reset

1: Charge detect as been updated

Write:

0: Negate ChrgDetInt status low

1: No Effect

ChrgDetCompInt

R/W

Read:

0: Charge detection not completed since last ChrgDetCompInt reset

1: Charge detection completed

Write:

0: Negate ChrgDetCompInt status low

1: No Effect

SP_INT_MSK

(0x30E9 - RESET= 0x02)

SERIAL PORT INTERRUPT MASK

BIT

NAME

R/W

DESCRIPTION

7:5

Reserved

HubSuspMask

R/W

0 = INT_N pin is not affected by Hub entering suspend

1 = INT_N pin is asserted when Hub enters suspend

HubCfgMask

R/W

0 = INT_N pin is not affected by Hub configuration event

1 = INT_N pin is asserted when Hub configured by USB Host

PrtPwrMask

R/W

0 = INT_N pin is not affected by Port Power register

1 = INT_N pin is asserted when Port Power register has been updated by

USB Host

ChrgDetMask

R/W

0 = INT_N pin is not affected by CHG_DET_N

1 = INT_N pin is asserted when CHG_DET bit in Charger Detect Register

is asserted

ChgDetCompMask

R/W

0 = INT_N pin is not affected by ChrgDetComplete

1 = INT_N pin is asserted when ChrgDetComplete bit in Charger Detect

Table 7.7 Serial Port Interrupt Status Register (continued)

SP_INT_STATUS

(0x30E8 - RESET= 0x00)

SERIAL PORT INTERRUPT STATUS

BIT

NAME

R/W

DESCRIPTION

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