STULPI01A_12 datasheet(38/44 Pages) STMICROELECTRONICS

38 / 44 page

ULPI registers

STULPI01A, STULPI01B

38/44

Doc ID 14817 Rev 4

Note:

Address 15h(Read-only) indicates the current value of various signals useful for debugging.

Note:

Address 16h-18h(Read), 16h(Write), 17h(Set), 18h(Clear).

Note:

Address 19h-1Bh(Read), 19h(Write), 1Ah(Set), 1Bh(Clear).

Table 25.

Debug register

Field name

Bits

Access

Reset

Description

LineState0

Contains the current value of LineState(0)

LineState1

Contains the current value of LineState(1)

Reserved

7:2

Reserved

Table 26.

Scratch register

Field name

Bits

Access

Reset

Description

Scratch

7:0

rd/wr/s/c

00b

Empty register byte for testing purposes. The software can

read, write, set, and clear this register and the STULPI01

functionality is not affected.

Table 27.

Car kit control register

Field name

Bits

Access

Reset

Description

Reserved

0rd/wr/s/c

Reserved

1rd/wr/s/c

TxdEn

rd/wr/s/c

Enables TXD signal in Car Kit mode

RxdEn

rd/wr/s/c

Enables RXD signal in Car Kit mode

Reserved

4rd/wr/s/c

Reserved

5rd/wr/s/c

Reserved

6rd/wr/s/c

Reserved

7rd/wr/s/c

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