WM8311 datasheet(66/302 Pages) WOLFSON

66 / 302 page

WM8311

Pre-Production

PP, May 2012, Rev 3.1

14.6.3 DCRW PAGE 2

Page 2 of the DCRW occupies register addresses R30736 (7810h) to R30743 (7817h). This contains

user-programmable data.

This page of data is normally loaded from OTP when ‘ON’ state transition is scheduled (except in

Development Mode or if RECONFIG_AT_ON = 0). This page of data can also be loaded from OTP

using the OTP_READ command; it can be written to the OTP using the OTP_WRITE command.

This page of data is loaded from the first page of ICE memory (00h to 0Fh) when ‘ON’ state transition

is scheduled in Development Mode (if RECONFIG_AT_ON = 1). This page of data can also be

loaded from ICE using the ICE Read command. Note that ICE Address 00h corresponds to bits 15:8

at the start address of DCRW Page 2; ICE Address 01h corresponds to bits 7:0 at the same DCRW

address.

If the WM8311 configuration data is loaded from external ICE in response to an ‘ON’ state transition

request, and the OTP_AUTO_PROG register bit is set, then the WM8311 will program the OTP with

the contents Page 2 and Page 3 of the DCRW data, after the ICE data has been loaded and

confirmed as valid. The WM8311 will also perform a Margin 1 Verify as part of the auto-program

function.

The programming supply voltage PROGVDD is required for the OTP_AUTO_PROG command. It is

also necessary to overdrive the LDO12VOUT pin from an external supply. See Section 6 for details of

the required supply voltages.

Using the auto-program function described above, the OTP will be finalised if the OTP_CUST_FINAL

bit is set in the ICE data. Completion of the auto-program is indicated using the OTP interrupts, as

described in Section 14.5. The auto-program completion is also indicated on the Status LED outputs,

as described in Section 22.

The OTP_CUST_ID field is used to hold a Customer Identifier for the OTP data contents. Whenever

an ‘ON’ state transition is requested, then the OTP_CUST_ID field is checked to confirm valid OTP

data. If the OTP_CUST_ID field is set to zero, then the WM8311 remains in the OFF power state. A

non-zero OTP_CUST_ID field is used to confirm valid OTP contents.

The OTP_CUST_FINAL bit is used to control whether the user-programmable OTP data (Page 2 and

Page 3) is finalised. If OTP_CUST_FINAL is set in the OTP and also set in the DCRW, then the

WM8311 prevents any further Writes to the OTP. If the DCRW has been loaded from the OTP, then

the OTP_CUST_FINAL bit indicates whether any further Write operations are possible. If the DCRW

has been loaded from the ICE, and the OTP auto-programming option is selected (see above), then

the value of the OTP_CUST_FINAL bit will be copied from the ICE memory to the OTP memory.

The above registers are defined in Table 29.

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

R30736 (7810h)

Customer OTP

OTP_AUTO_

PROG

If this bit is set when bootstrap data is

loaded from ICE (in development mode),

then the ICE contents will be

programmed in the OTP.

14:1

OTP_CUST_

ID [13:0]

0000h

This field is checked when an ‘ON’

transition is requested. A non-zero value

is used to confirm valid data.

OTP_CUST_

FINAL

If OTP_CUST_FINAL is set in the OTP

and also set in the DCRW, then no

further Writes are possible to the OTP.

Table 29 OTP Registers - DCRW Page 2

The remaining contents of DCRW Page 2 include the registers listed in Table 30, which are defined in

other sections of this datasheet.

FUNCTION

REFERENCE

DC1_ON_SLOT [2:0]

DC-DC Converter 1

See Section 15.12.2

DC1_FREQ [1:0]

See Section 15.12.2

DC1_PHASE

See Section 15.12.2

DC1_ON_VSEL [6:2]

See Section 15.12.2

WM8311 Datasheet(PDF) 66 Page - Wolfson Microelectronics plc

WM8311 Datasheet(HTML) 66 Page - Wolfson Microelectronics plc

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL