WM8310GEB/V Wolfson Microelectronics, WM8310GEB/V Datasheet - Page 61

• Manufacturer Part Number: WM8310GEB/V
• Description: POWER MANAGEMENT SUBSYSTEM, 169BGA
• Manufacturer: Wolfson Microelectronics

Specifications of WM8310GEB/V

• Supply Voltage: 7V
• No. Of Step-down Dc - Dc Converters: 4
• No. Of Ldo Regulators: 11
• Digital Ic Case Style: BGA
• No. Of Pins: 169
• No. Of Regulated Outputs: 13
• Operating Temperature Range: -40°C To
• Rohs Compliant: Yes
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Pre-Production
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14.6.1
Page 0 of the DORW occupies register addresses R30720 (7800h) to R30727 (7807h). This contains
factory-preset data which is loaded from OTP when an ‘ON’ state transition is scheduled.
Page 0 of the DORW contains a 128-bit unique ID. Note that these fields are Read-Only in the OTP
and cannot be changed.
14.6.2
Page 1 of the DORW occupies register addresses R30728 (7808h) to R30735 (780Fh). This contains
factory-preset data which is loaded from OTP when an ‘ON’ state transition is scheduled.
Page 1 of the DORW contains trim parameters that ensure the accuracy of the voltage references
and the power management RC oscillator. Note that these fields are Read-Only in the OTP and
cannot be changed.
14.6.3
Page 2 of the DORW 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 DBE 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 DBE using the DBE Read command. Note that DBE Address 00h corresponds to bits
15:8 at the start address of DORW Page 2; DBE Address 01h corresponds to bits 7:0 at the same
DORW address.
If the WM8310 configuration data is loaded from external DBE in response to an ‘ON’ state transition
request, and the OTP_AUTO_PROG register bit is set, then the WM8310 will program the OTP with
the contents Page 2 and Page 3 of the DORW data, after the DBE data has been loaded and
confirmed as valid. The WM8310 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 DBE 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 WM8310 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 DORW, then the
WM8310 prevents any further Writes to the OTP. If the DORW has been loaded from the OTP, then
the OTP_CUST_FINAL bit indicates whether any further Write operations are possible. If the DORW
has been loaded from the DBE, and the OTP auto-progamming option is selected (see above), then
the value of the OTP_CUST_FINAL bit will be copied from the DBE memory to the OTP memory.
The above registers are defined in Table 29.
DORW PAGE 0
DORW PAGE 1
DORW PAGE 2
PP, December 2009, Rev 3.0
WM8310
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