USBCS
USB Control and Status
7FD6
b7
b6
b5
b4
b3
b2
b1
b0
WAKESRC
-
-
-
DISCON
DISCOE
RENUM SIGRSUME
R/W
0
R
0
R
0
R
0
R/W
0
R/W
1
R/W
0
R/W
0
Figure 12-31. USB Control and Status Registers
Bit 7:
WAKESRC Wakeup source
This bit indicates that a high to low transaction was detected on the WAKEUP# pin. Writ-
ing a “1” to this bit resets it to “0.”
Bit 3:
DISCON
Signal a Disconnect on the DISCON# pin
The EZ-USB DISCON# pin reflects the complement of this bit. This bit is normally set to
0 so that the action of the DISCOE bit (below) either floats the DISCON# pin or drives it
HI.
Bit 2:
DISCOE
Disconnect Output Enable
DISCOE controls the output buffer on the DISCON# pin. When DISCOE=0, the pin
floats, and when DISCOE=1, it drives to the complement of the DISCON bit (above).
DISCOE is used in conjunction with the RENUM bit to perform ReNumeration (Chap-
ter 5, "EZ-USB Enumeration and ReNumeration ").
Page 12-38
Chapter 12. EZ-USB Registers
EZ-USB TRM v1.9
CYPRESS [ CYPRESS ]
