M68HC08 datasheet(166/288 Pages) FREESCALE

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Universal Serial Bus Module (USB)

Data Sheet

MC68HC908BD48 — Rev. 2.1

166

Universal Serial Bus Module (USB)

Freescale Semiconductor

13.5.1 USB Address Register (UADR)

USBEN — USB Enable

This read/write bit enables/disables the USB module. When USBEN

bit is clear, USB will not respond to any tokens, but still can detect

USB reset signal, or EOP signals, and non-IDLE state if in Suspend

Mode. Reset clears this bit. After USB reset, software will set this bit

to enable USB.

1 = USB module enabled

0 = USB module disabled

UADD[6:0] — USB Address

These bits specify the USB address of the device. Reset clears these

bits to $00, the default address.

13.5.2 USB Interrupt Register (UINTR)

Address:

$0029

Bit 7

654321

Bit 0

Read:

USBEN

UADD6

UADD5

UADD4

UADD3

UADD2

UADD1

UADD0

Write:

Reset:

00000000

Figure 13-1. USB Address Register (UADR)

Address:

$002A

Bit 7

654321

Bit 0

Read:

TBEF

RBFF

EOPIF

RSTIF

TBIE

RBIE

EORIE

RSTIE

Write:

Reset:

00000000

= Unimplemented

Figure 13-2. USB Interrupt Register (UINTR)

M68HC08 Datasheet(PDF) 166 Page - Freescale Semiconductor, Inc

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