Production Data
WM8321
REGISTER
GP6_PWR_DOM
FUNCTION
REFERENCE
See Section 21.3
GP6_POL
See Section 21.3
See Section 21.3
See Section 21.3
See Section 21.3
See Section 13.1
See Section 13.1
See Section 13.1
See Section 25
GP6_OD
GP6_ENA
GP6_FN [3:0]
CLKOUT_SLOT [2:0]
XTAL_ENA
Clocking
XTAL_INH
WDOG_ENA
Watchdog Timer
LED1_SRC [1:0]
LED2_SRC [1:0]
SYSOK_THR [2:0]
Table 28 DCRW Page 3
System Status LED Drivers See Section 22.2
See Section 22.2
Supply Voltage Monitoring
See Section 24.4
14.6.5 DCRW PAGE 4
Page 4 of the DCRW occupies register addresses R30752 (7820h) to R30759 (7827h).
This page of data is loaded from the third page of ICE memory (20h to 2Fh) when ‘ON’ state transition
is scheduled in Development Mode. This page of data can also be loaded from ICE using the ICE
Read command. Note that ICE Address 20h corresponds to bits 15:8 at the start address of DCRW
Page 4; ICE Address 21h corresponds to bits 7:0 at the same DCRW address.
The ICE_VALID_DATA register is used to hold a validation field for the ICE data contents. If the
WM8321 configuration data is loaded from the external ICE in response to an ‘ON’ state transition
request in Development Mode, then the ICE_VALID_DATA field is checked to confirm valid ICE data.
The ICE data is deemed valid if the ICE_VALID_DATA field contains the value A596h. If the ICE is
not connected or contains invalid data, then the WM8321 remains in the OFF power state until a
Device Reset.
The ICE_VALID_DATA register is defined in Table 29.
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
R30759 (7827h)
ICE_VALID_
DATA [15:0]
This field is checked in development
mode when an ‘ON’ transition is
requested. A value of A596h is
required to confirm valid data.
15:0
0000h
ICE CHECK
DATA
Table 29 ICE Registers - DCRW Page 5
PD, February 2012, Rev 4.0
61
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