Microchip Technology MA330025-1 Data Sheet

DS70616G-page 392

 2009-2012 Microchip Technology Inc.

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

bit 15

bit 8

U-0

R-x, HSC

R/W-0

U-0

R/W-0

R/W-0

R/W-0

R/W-0

—

SE0

PKTDIS

—

HOSTEN

RESUME

PPBRST

USBEN

bit 7

bit 0

U = Unimplemented bit, read as ‘0’

R = Readable bit

W = Writable bit

HSC = Hardware Settable/Clearable bit

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

bit 15-7

Unimplemented: Read as ‘0’

bit 6

SE0: Live Single-Ended Zero Flag bit
1 = Single-ended zero is active on the USB bus
0 = No single-ended zero is detected

bit 5

PKTDIS: Packet Transfer Disable bit
1 = SIE token and packet processing are disabled; automatically set when a SETUP token is received
0 = SIE token and packet processing are enabled

bit 4

Unimplemented: Read as ‘0’

bit 3

HOSTEN: USB Host Mode Enable bit

1 = USB host capability is enabled; pull-downs on D+ and D- are activated in hardware 
0 = USB host capability is disabled

bit 2

RESUME: USB Resume Signaling Enable bit
1 = Resume signaling is activated
0 = Resume signaling is disabled

bit 1

PPBRST: Ping-Pong Buffers Reset bit
1 =  Resets all Ping-Pong Buffer Pointers to the EVEN buffer descriptor banks
0 =  Ping-Pong Buffer Pointers are not reset

bit 0

USBEN: USB Module Enable bit
1 = USB module and supporting circuitry are enabled (device attached); D+ pull-up is activated in hardware
0 = USB module and supporting circuitry are disabled (device detached)

Note 1: This bit should be ‘0’ in Device mode.