PDIUSBH11 Datasheet, PDF (14/26 Pages) NXP Semiconductors – Universal Serial Bus Hub

Philips Semiconductors
Universal Serial Bus Hub
Product specification
PDIUSBH11
Get Port Status
Command
: E0h–E3h
Data
: Read 1 or 2 bytes
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 BYTE
765 43 2 10
X00 00 0 0 0
POWER ON VALUE
CONNECT
ENABLED
SUSPEND
OVER-CURRENT
RESET
POWER
LOW SPEED
RESERVED
CONNECT
ENABLED
SUSPEND
OVERCURRENT
RESET
POWER
LOW SPEED
A ‘1’ INDICATES THAT A DEVICE IS CONNECTED ON THIS PORT OF THE HUB
A ‘1’ INDICATES THAT THIS PORT IS ENABLED
A ‘1’ INDICATES THAT THIS PORT IS SUSPENDED
A ‘1’ INDICATES THAT OVERCURRENT CONDITION EXISTS ON THIS PORT.
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 BUS RESET ON THIS PORT IS IN PROGRESS.
WHEN RESET IS COMPLETED (NORMAL DURATION OF 10MS), THIS BIT INDICATES A ‘0’.
A ‘1’ INDICATES THAT POWER IS SUPPLIED TO DOWNSTREAM PORTS.
SINCE THE PDIUSBH11 SUPPORTS GANG MODE POWER SWITCHING,
THIS BIT IS THE SAME FOR ALL PORTS.
A ‘1’ INDICATES THAT LOW SPEED DEVICE IS CONNECTED TO THIS PORT.
THIS BIT IS ONLY VALID WHEN CONNECT BIT IS A ‘1’.
SV00503
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.
765 43 2
XXX 0 0 0
10
00
POWER ON VALUE
CONNECT
ENABLED
SUSPEND
OVERCURRENT
RESET
RESERVED
SV00510
1997 Aug 01
14