WM8310GEB/V Wolfson Microelectronics, WM8310GEB/V Datasheet - Page 44

• 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
12.5 SOFTWARE RESET AND CHIP ID
12.6 SOFTWARE SCRATCH REGISTER
w
R16392 (4008h)
Security Key
Table 13 Security Key Register
A Software Reset can be commanded by writing to Register 0000h. This is a read-only register field
and the contents of this register will not be affected by a write operation. For more details of the
different reset types, see Section 24.
The Chip ID can be read back from Register 0000h. Other ID fields can be read from the registers
defined in Table 14.
R0 (0000h)
Reset/ID
R1 (0001h)
Revision
R16384 (4000h)
Parent ID
Table 14 Reading Device Information
The WM8310 provides one 16-bit register as a “Software Scratch” register. This is available for use
by the host processor to store data for any purpose required by the application.
The contents of the Software Scratch register are retained in the BACKUP power state.
R16393 (4009h)
Software Scratch
Table 15 Software Scratch Register
ADDRESS
ADDRESS
ADDRESS
15:0
15:0
15:8
15:0
15:0
BIT
BIT
BIT
7:0
SECURITY
[15:0]
CHIP_ID
[15:0]
PARENT_RE
V [7:0]
CHILD_REV
[7:0]
PARENT_ID
[15:0]
SW_SCRATC
H [15:0]
LABEL
LABEL
LABEL
DEFAULT
DEFAULT
DEFAULT
0000h
0000h
6204h
0000h
00h
00h
Security Key
A value of 9716h must be written
to this register to access the user-
keyed registers.
Writing to this register causes a
Software Reset. The register map
contents may be reset, depending
on SW_RESET_CFG.
Reading from this register will
indicate Chip ID.
The revision number of the parent
die
The revision number of the child
die (when present)
The ID of the parent die
Software Scratch Register for use
by the host processor.
Note that this register’s contents
are retained in the BACKUP power
state.
PP, December 2009, Rev 3.0
DESCRIPTION
DESCRIPTION
DESCRIPTION
Pre-Production
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