mpc823rg Freescale Semiconductor, Inc, mpc823rg Datasheet - Page 826

• Manufacturer Part Number: mpc823rg
• Description: Mpc823 Powerquicc Integrated Communications Processor For Portable Systems
• Manufacturer: Freescale Semiconductor, Inc

Communication Processor Module
16.10.8.9 USB MASK REGISTER. The 16-bit read/write USB mask register (USBMR) has
the same bit formats as the USB event register. If a bit in the USBMR is one, the
corresponding interrupt in the USBER is enabled. If the bit is zero, the corresponding
interrupt in the USBER will be masked.
16.10.8.10 USB STATUS REGISTER. The 8-bit read-only USB status (USBS) register
allows you to monitor real-time status condition on the USB lines.
Bits 0–6—Reserved
These bits are reserved and must be set to 0.
IDLE—Idle Status
When set, this bit indicates that an idle condition has been detected on the USB lines. It is
cleared when the bus is not idle. Software has to set up a timer to detect the idle state that
occurs after 3ms.
USBMR
USBS
RESET
RESET
FIELD
ADDR
FIELD
ADDR
R/W
R/W
BIT
BIT
0
0
1
2
RESERVED
R/W
Freescale Semiconductor, Inc.
1
0
For More Information On This Product,
3
MPC823 REFERENCE MANUAL
4
2
Go to: www.freescale.com
5
(IMMR & 0xFFFF0000) + 0xA17
RESET
RESERVED
R/W
6
0
(IMMR & 0
R
3
0
IDLE
R/W
7
0
x
FFFF0000) + 0
TXE3
R/W
8
0
4
x
A14
TXE2
R/W
9
0
TXE1
R/W
10
0
5
TXE0
R/W
11
0
SOF
R/W
12
0
6
BSY
R/W
13
0
MOTOROLA
TXB
R/W
14
0
IDLE
R
7
0
RXB
R/W
15
0