DocID025735 Rev 1

19/27

STHVDAC-253M

Register table

27

4.3

Changing USID

The USID programming method is compliant with MIPI RFFE interface 1.10 (26 July 2011).

This task is achieved writing consecutively registers 29 (Product ID), 30 (Manufacturer ID)

and 31 (Manufacturer ID and USID definition).

Note that while reprogramming USID:

- Bits SA3, SA2, SA1 and SA0 remain old USID value.

- Register 29, D7 (MSB) corresponds to pin SELSID logic level

- New USID is defined by the register 30 last four bits.

After the USID reprogramming, SA3, SA2, SA1 and SA0 values correspond to New USID

respective values (see Figure 8).

Figure 8. USID programming command sequence

SA3

SA2

SA1

SA0

A4

A3

A2

A1

A0

P

SCLK

SDATA

Register write command frame

A

SSC

0

1

0

11

1

1

0

SCLK

SDATA

A

PID2

PID1

PID0

P

0

PID6

PID5

PID4

PID3

PID6

P

Data frame (product ID[7:0])

Bus

Park

SA3

SA2

SA1

SA0

A4

A3

A2

A1

A0

P

SCLK

SDATA

B

SSC

01

0

11

1

0

1

SCLK

SDATA

B

MID2

MID1

MID0

P

0

MID6

MID5

MID4

MID3

MID7

P

Data frame (manufacturer_ID[7:0])

Bus

Park

SA3

SA2

SA1

SA0

A4

A3

A2

A1

A0

P

SCLK

SDATA

Register write command frame

C

SSC

0

1

0

11

1

1

1

SCLK

SDATA

C

USID2

USID1

USID0

P

0

0

MID9

MID8

USID3

0

P

Data frame (manufacturer_ID[9:8],USID[3:0])

Bus

Park

Register write command frame