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Philips Semiconductors
USB 2-port hub
ENDPOINT DESCRIPTIONS
There are two endpoint configuration modes supported by the PDIUSBH12, the Single Embedded Function mode and the Multiple (3)
Embedded Function mode. The Single Embedded Function mode is the default at power up reset. The Multiple (3) Embedded Function mode
can be configured by writing a zero to bit 7 of the first byte of the Set Mode command. Either mode is backward compatible to the PDIUSBH11.
Table 1. SINGLE EMBEDDED FUNCTION MODE (DEFAULT AT POWER UP)
FUNCTION
Hub
Embedded
Function 1
NOTE:
1. Hub interrupt endpoint is not indexed.
2. Generic endpoint can be used for Interrupt or Bulk endpoint.
Table 2. MULTIPLE (3) EMBEDDED FUNCTION MODE
FUNCTION
Hub
Embedded
Function 1
Embedded
Function 6
Embedded
Function 7
1999 Jul 22
PORTS
ENDPOINT #
0: Upstream
0 U
t
2–3: Downstream
2–3: Downstream
1
1
PORTS
ENDPOINT #
0 U
0: Upstream
t
2–3: Downstream
2–3: Downstream
1
1
6
6
7
7
ENDPOINT
TRANSFER
INDEX
TYPE
0
0
0
Control
Control
1
1
–
Interrupt
2
0
0
Control
Control
3
5
1
1
Generic
Generic
4
6
2
2
Generic
Generic
7
8
3
3
Generic
Generic
9
ENDPOINT
TRANSFER
INDEX
TYPE
0
0
0
Control
Control
1
1
–
Interrupt
2
0
0
Control
Control
3
5
1
1
Generic
Generic
4
10
0
0
Control
Control
11
6
1
1
Generic
Generic
7
12
0
0
Control
Control
13
8
1
1
Generic
Generic
9
5
Product specification
PDIUSBH12
MAX
PACKET SIZE
DIRECTION
(BYTES)
OUT
8
IN
8
IN
1
OUT
8
IN
8
OUT
8
IN
8
OUT
8
IN
8
OUT
8
IN
8
MAX
DIRECTION
PACKET SIZE
(BYTES)
OUT
8
IN
8
IN
1
OUT
8
IN
8
OUT
8
IN
8
OUT
8
IN
8
OUT
8
IN
8
OUT
8
IN
8
OUT
8
IN
8
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