Cirrus Logic EP93xx - Manual (Page 476)

11-36 DS785UM1
Copyright 2007 Cirrus Logic
Universal Serial Bus Host Controller
EP93xx User’s Guide
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OCIC: PortOverCurrentIndicatorChange. This bit is valid only if
overcurrent conditions are reported on a per-port basis.
This bit is set when Root Hub changes the
PortOverCurrentIndicator bit. The HCD writes a “1” to
clear this bit. Writing a “0” has no effect.
0 = no change in PortOverCurrentIndicator
1 = PortOverCurrentIndicator has changed
PRSC: PortResetStatusChange. This bit is set at the end of the
10 ms port reset signal. The HCD writes a “1” to clear this
bit. Writing a “0” has no effect.
0 = port reset is not complete
1 = port reset is complete
USBCfgCtrl
Address:
0x8002_0080 - Read/Write
Default:
0x0000_0000
Definition:
Used to implement some input signals to USB host controller for configuration
through software.
Bit Descriptions:
RSVD: Reserved. Unknown During Read.
TPOC: When asserted by software, the corresponding port will
enter DISCONNECT state. These bits must be cleared
before the ports can be reused.
TRCS: Inverted internally and sent out as APP_CntSelN signal to
uhostc_top. Internally known as TicRegCntSel.
APP_CntSelN is used for selecting the counter value for
either simulation or real-time for the 1 ms frame duration
used internally. It should be usually set to “0”. Setting it to
“1” will cause the internal counter count to be a partial full
count.
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
RSVD
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
RSVD TRCS TPOC RSVD