PDIUSBH11NB PHILIPS [NXP Semiconductors], PDIUSBH11NB Datasheet - Page 14

• Manufacturer Part Number: PDIUSBH11NB
• Description: Universal Serial Bus Hub
• Manufacturer: PHILIPS [NXP Semiconductors]

Philips Semiconductors
Get Port Status
Command
Data
The Get Port Status Command can be followed by one or two data reads. The first byte returned contains the port status. The second byte
returned is the port status change byte.
Port Status Change Byte
The description for the Port Status Change Byte is similar to the Port Status Byte except that the value of the bits are ‘1’ only when a change
has occurred.
1997 Aug 01
Universal Serial Bus Hub
X
7
X
6
X
5
: E0h–E3h
: Read 1 or 2 bytes
4
0
3
0
CONNECT
ENABLED
SUSPEND
OVERCURRENT
RESET
POWER
LOW SPEED
2
0
1
0
0
0
POWER ON VALUE
CONNECT
ENABLED
SUSPEND
OVERCURRENT
RESET
RESERVED
A ‘1’ INDICATES THAT POWER IS SUPPLIED TO DOWNSTREAM PORTS.
A ‘1’ INDICATES THAT BUS RESET ON THIS PORT IS IN PROGRESS.
SINCE THE PDIUSBH11 SUPPORTS GANG MODE POWER SWITCHING,
A ‘1’ INDICATES THAT A DEVICE IS CONNECTED ON THIS PORT OF THE HUB
A ‘1’ INDICATES THAT LOW SPEED DEVICE IS CONNECTED TO THIS PORT.
THIS BIT IS THE SAME FOR ALL PORTS.
THIS BIT IS ONLY VALID WHEN CONNECT BIT IS A ‘1’.
WHEN RESET IS COMPLETED (NORMAL DURATION OF 10MS), THIS BIT INDICATES A ‘0’.
A ‘1’ INDICATES THAT THIS PORT IS ENABLED
A ‘1’ INDICATES THAT THIS PORT IS SUSPENDED
IN MODE 0 OF OPERATION, THIS BIT IS THE SAME FOR ALL PORTS.
IN MODE 1, INDIVIDUAL PORT OVERCURRENT INDICATION IS POSSIBLE.
A ‘1’ INDICATES THAT OVERCURRENT CONDITION EXISTS ON THIS PORT.
PORT STATUS BYTE
7
X
6
0
5
0
4
0
3
0
SV00510
2
0
1
0
0
0
14
POWER ON VALUE
CONNECT
ENABLED
SUSPEND
OVER-CURRENT
RESET
POWER
LOW SPEED
RESERVED
PDIUSBH11
Product specification
SV00503