TCC720 Datasheet, PDF (72/143 Pages) List of Unclassifed Manufacturers – 32-bit RISC Microprocessor For Digital Media Player

TCC720
32-bit RISC Microprocessor for Digital Media Player
Dec. 16. 2002
USB CONTROLLER
Preliminary Spec 0.51
Power Management Register (UBPWR)
0x80000504
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Reserved
- - - - RST RSM SP ENSP
RST [3]
1
Type
R
Reset Signal
Indicates that 1 reset signaling is received from the host
RSM [2]
1
Type
R/W
Resume Signal
Initiates a resume signaling (10 ~ 15 ms duration)
SP [1]
1
Type
R
Suspend Mode
Indicates that the USB enters suspend mode
ENSP [0]
0
1
Type
R/W
R/W
Enable Suspend Mode
Disable Suspend Mode
Enable Suspend Mode
This register is used for suspend, resume and reset signaling. If ENSP filed is zero, the device will not
enter suspend mode. The SP bit field is set by the USB when it enters suspend mode. It is cleared
when you clear the RSM bit field by writing zero or when the resume signal from host is received. The
USB generates resume signaling while RSM bit is set in suspend mode. The RST bit field is set by USB
when reset signal is received from the host.
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