Usb Frame Number And Match Register; Table 28-4 Usb Frame Number And Match Register Description - Motorola DragonBall MC9328MX1 Reference Manual

USB Device Port

28.3.1 USB Frame Number and Match Register

The USB Frame Number and Match Register (USB_FRAME) is used to detect a specific frame.
USB_FRAME
BIT 31 30 29
TYPE r r r
0 0 0
RESET
BIT 15 14 13
TYPE r r r
0 0 0
RESET
Table 28-4. USB Frame Number and Match Register Description
Name
Reserved Reserved—These bits are reserved and should read 0.
Bits 31–27
MATCH Match Field—Sets compare value for FRAME_MATCH interrupt. When the value in the FRAME
Bits 26–16 field equals the value in the MATCH field, a FRAME_MATCH interrupt is generated (if not
masked).
Reserved Reserved—These bits are reserved and should read 0.
Bits 15–11
FRAME Frame Field—Holds the frame number decoded from the SOF (Start of Frame) packet that leads
Bits 10–0 each USB frame.
28-8
USB Frame Number and Match Register
28 27 26 25
r r rw rw
0 0 0 0
12 11 10 9
r r r r
0 0 0 0
MC9328MX1 Reference Manual
24 23 22 21 20
MATCH
rw rw rw rw rw
0 0 0 0
0x0000
8 7 6 5
FRAME
r r r r
0 0 0 0
0x0000
Description
Addr
0x00212000
19 18 17 16
rw rw rw rw
0 0 0 0
4 3 2 1
r r r r
0 0 0 0
MOTOROLA
0
0
r
0