mpc823rg Freescale Semiconductor, Inc, mpc823rg Datasheet - Page 814

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

Communication Processor Module
16.10.8 USB Controller Programming Model
16.10.8.1 USB MODE REGISTER. The read/write USB mode (USMOD) register controls
the USB controller’s operation mode.
LSS—Low-Speed Signaling
When set, this bit selects low-speed (1.5Mbps) signaling. The actual bit rate depends on the
USB clock source.
RESUME—Generate Resume Condition
When set, this bit generates a resume condition on the USB. This bit must be used if the
function wants to exit suspend mode.
Bits 2–4—Reserved
These bits are reserved and must be set to zero.
TEST—Test Mode
HOST—Host Mode
USMOD
RESET
FIELD
ADDR
R/W
BIT
0 = Full-speed (12Mbps) signaling. Normal operation mode.
1 = Low-speed (1.5Mbps) signaling. This mode can be used for a point-to-point
0 = Normal operation.
1 = Local loopback mode. In this mode, if the HOST bit is set, endpoint 0 operates as
0 = The USB controller implements a USB function.
1 = The USB controller implements a USB host. Endpoint 0 operates as the host. The
connection to a low-speed device or in local loopback mode.
host and endpoints 1–3 can be used as function endpoints.
other endpoints are not used, unless the TEST bit is set.
R/W
LSS
0
0
RESUME
R/W
Freescale Semiconductor, Inc.
1
0
For More Information On This Product,
MPC823 REFERENCE MANUAL
2
Go to: www.freescale.com
(IMMR & 0xFFFF0000) + 0xA00
RESERVED
R/W
3
0
4
TEST
R/W
5
0
HOST
R/W
6
0
MOTOROLA
R/W
EN
7
0