Production Data
WM8321
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
Enable Auto-Increment function
REFER TO
R16391
(4007h)
Control
Interface
AUTOINC
2
1
0 = Disabled
1 = Enabled
Register 4007h Control Interface
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
REFER TO
R16392
(4008h)
Security Key
SECURITY
[15:0]
Security Key
15:0
0000_0000
_0000_000
0
A value of 9716h must be written to this register to
access the user-keyed registers.
Register 4008h Security Key
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
REFER TO
R16393
(4009h)
Software
Scratch
SW_SCRATCH
[15:0]
Software Scratch Register for use by the host
processor.
15:0
0000_0000
_0000_000
0
Note that this register’s contents are retained in the
BACKUP power state.
Register 4009h Software Scratch
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
REFER TO
R16394
(400Ah)
OTP Control
15
OTP_PROG
0
Selects the PROGRAM device state.
0 = No action
1 = Select PROGRAM mode
Note that, after PROGRAM mode has been selected,
the chip will remain in PROGRAM mode until a Device
Reset.
Protected by security key.
13
11
OTP_MEM
1
0
Selects ICE or OTP memory for Program commands.
0 = ICE
1 = OTP
Protected by security key.
OTP_FINAL
Selects the FINALISE command, preventing further
OTP programming.
0 = No action
1 = Finalise Command
Protected by security key.
OTP_VERIFY
OTP_WRITE
Selects the VERIFY command for the selected OTP
memory page(s).
10
0
0
0 = No action
1 = Verify Command
Protected by security key.
Selects WRITE command for the selected OTP memory
page(s).
9
0 = No action
1 = Write Command
Protected by security key.
PD, February 2012, Rev 4.0
149
w
WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
