2–18

2.6.8

HUBPIDL: Hub PID Register (Low-Byte)

7

6

5

4

3

210

D7

D6

D5

D4

D3

D2

D1

D0

R/W

R/W

R/W

R/W

R/W

R/W

R/W

R/W

BIT

NAME

RESET

FUNCTION

7–0

D[7:0]

00h

Hub PID low-byte value

2.6.9

HUBPIDH: Hub PID Register (High-Byte)

7

6

5

4

3

210

D15

D14

D13

D12

D11

D10

D9

D8

R/W

R/W

R/W

R/W

R/W

R/W

R/W

R/W

BIT

NAME

RESET

FUNCTION

7–0

D[15:8]

00h

Hub PID high-byte value

2.6.10 HUBVIDL: Hub VID Register (Low-Byte)

7

6

5

4

3

210

D7

D6

D5

D4

D3

D2

D1

D0

R/W

R/W

R/W

R/W

R/W

R/W

R/W

R/W

BIT

NAME

RESET

FUNCTION

7–0

D[7:0]

00h

Hub VID low-byte value

2.6.11 HUBVIDH: Hub VID Register (High-Byte)

7

6

5

4

3

210

D15

D14

D13

D12

D11

D10

D9

D8

R/W

R/W

R/W

R/W

R/W

R/W

R/W

R/W

BIT

NAME

RESET

FUNCTION

7–0

D[15:8]

00h

Hub VID high-byte value

2.6.12 VIDSTA: VID/PID Status Register

This register is used to read the value on four external pins. The firmware can use this value to select one of the vendor

identification/product identifications (VID/PID) stored in memory. The TUSB2136/D supports up to 16 unique

VID/PIDs with application code to support different products. This provides a unique opportunity for original

equipment manufacturers (OEMs) to have one device ROM programmed to support up to 16 different product lines

by using S0–S3 to select VID/PID and behavioral application code for the selected product.

7

6

5

4

3

210

RSV

RSV

RSV

RSV

S3

S2

S1

S0

R/O

R/O

R/O

R/O

R/O

R/O

R/O

R/O

BIT

NAME

RESET

FUNCTION

3–0

S[3:0]

x

VID/PID selection bits. These bits reflect the status of the external pins as defined by Table 2–6. Note that a

pin tied low is reflected as a 0 and a pin tied high is reflected as a 1.

7–4

RSV

0

Reserved = 0