WM8310GEB/V Wolfson Microelectronics, WM8310GEB/V Datasheet - Page 58

• 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

WM8310
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Table 25 OTP Verify Command (Margin 1)
14.4.5
The Finalise command sets the OTP finalise bit for the user-programmable pages of the OTP
memory. The Finalise commands are selected by writing 1 to the OTP_FINAL bit.
Note that Page 0 and Page 1 will be programmed and finalised during manufacture; these memory
pages cannot be re-written by users. Following the user Finalise command, Page 2 and Page 3 of
the OTP memory will be prevented from any further OTP Write commands. Each page of the OTP
memory can be programmed only once; the OTP Finalise command ensures that any subsequent
Write commands will have no effect and that the OTP contents are maintained securely.
The OTP memory is selected by setting the OTP_MEM bit to 1. (Note that the WM8310 does not
support this function on the external DBE memory.)
The Customer Finalise bit (CUST_OTP_FINAL) is in Page 2. This page is selected by setting
OTP_PAGE = 10. Note that the Page 2 finalise bit locks the contents of Page 2 and Page 3.
All other bits in the OTP Control Register should be set to 0 when a Finalise command is issued.
(Note that OTP_PROG should be set to 0 when a Finalise command is issued.)
The programming supply voltage PROGVDD is required for the OTP Finalise command. It is also
necessary to overdrive the LDO12VOUT pin from an external supply. See Section 6 for details of the
required supply voltages.
Note that the OTP_FINAL command does not set the CUST_OTP_FINAL bit in the DORW; it only
sets it in the OTP memory. Care is required when verifying a Finalised OTP page, to avoid an OTP
error indication, as described in Section 14.4.4.
The OTP Control Register contents for the OTP Finalise Command is detailed in Table 26. This is
the only recommended OTP Finalise Command; no variants of the Finalise Command should be
used.
Table 26 OTP Finalise Command
OTP Verify Page 0
OTP Verify Page 1
OTP Verify Page 2
OTP Verify Page 3
OTP Verify All
OTP Finalise Page 2
(Note that this command finalises
the contents of OTP Page 2 and
Page 3.)
FINALISE COMMAND
VERIFY COMMAND
OTP FINALISE COMMAND
OTP CONTROL REGISTER VALUE
OTP CONTROL REGISTER VALUE
24A0h
2480h
2481h
2482h
2483h
2802h
PP, December 2009, Rev 3.0
Pre-Production
58