NHE6300ESB S L7XJ Intel, NHE6300ESB S L7XJ Datasheet - Page 483

• Manufacturer Part Number: NHE6300ESB S L7XJ
• Manufacturer: Intel

Specifications of NHE6300ESB S L7XJ

• Lead Free Status / RoHS Status: Compliant

10—Intel
10.2.7
Table 378. PORTSC[0,1]—Port Status and Control Register (Sheet 1 of 2)
November 2007
Order Number: 300641-004US
15:1
Bits
Default Value:
12
11
10
3
9
8
Note: For Function 0 this applies to the Intel
Device:
®
Offset:
Overcurrent Indicator
6300ESB ICH
Overcurrent Active
Low Speed Device
Attached (LS)
Port Reset
PORTSC[0,1]—Port Status and Control Register
1 this applies to the Intel
After a Power-up reset, Global reset, or Host Controller reset, the initial conditions of a
port are: no device connected, Port disabled, and the bus line status is 00 (single-
ended ‘0’).
Reserved
Suspend
X
Port 0/2: 10-11h
Port 1/3: 12-13h
0080h
Name
Reserved.
This bit should not be written to a ’1’ when a global suspend
is active (bit 3 =1 in the USBCMD register). Bit 2 and bit 12 of
this register define the hub states as follows:
When in suspend state, downstream propagation of data is
blocked on this port, except for single-ended ’0’ resets (global
reset and port reset). The blocking occurs at the end of the
current transaction if a transaction was in progress when this
bit was written to ‘1’. In the suspend state, the port is
sensitive to resume detection. Note that the bit status does
not change until the port is suspended and that there may be
a delay in suspending a port when there is a transaction
currently in progress on the USB.
1 = Port in suspend state.
0 = Port not in suspend state.
NOTE: Normally, if a transaction is in progress when this bit
Set by hardware.
0 = Software clears this bit by writing a ‘1’ to the bit position.
1 = Overcurrent pin has gone from inactive to active on this
This bit is set and cleared by hardware.
0 = Indicates that the overcurrent pin is inactive (high).
1 = Indicates that the overcurrent pin is active (low).
0 = Port is not in Reset.
1 = Port is in Reset. When set, the port is disabled and sends
Writes have no effect.
0 = Full-speed device is attached.
1 = Low-speed device is attached to this port.
Bits [12, 2]
port.
the USB Reset signaling.
X 0
0 1
1 1
is set, the port will be suspended when the current
transaction completes. However, in the case of a
specific error condition (out transaction with babble),
the Intel
then suspend the port.
®
6300ESB ICH USB ports 2 and 3.
®
6300ESB ICH may issue a start-of-frame,
®
Hub State
Disable
Enable
Suspend
Description
Attribute:
Function:
6300ESB ICH USB ports 0 and 1; for Function
Size:
X
Read/Write
16-bit
Intel
®
6300ESB I/O Controller Hub
Access
R/WC
R/W
RO
RO
RO
RO
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