WM8310GEB/V Wolfson Microelectronics, WM8310GEB/V Datasheet - Page 136

• 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
22 SYSTEM STATUS LED DRIVERS
22.1 GENERAL DESCRIPTION
22.2 LED DRIVER CONTROL
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The WM8310 provides two System Status LED Drivers. These are digital outputs intended for driving
LEDs directly. The LED outputs can be assigned to indicate OTP Program status, Power State status
or Battery Charger status. They can also be commanded directly via register control, in order to
provide any other required functionality.
LED Drivers are configurable in the ON and SLEEP power states only. The functionality of the LED
Drivers is controlled by the LEDn_SRC register bits, as described in Table 80.
Table 80 Status LED Control
22.2.1
The LED drivers indicate the status of the OTP Auto Program function, where the contents of the
external DBE memory are automatically programmed into the OTP. See Section 14.6.3 for further
details of the OTP Auto Program function.
When the OTP Auto Program function is executed, the System Status LED drivers follow the
functionality defined in Table 81.
Table 81 Status LED Outputs - OTP Program Status
The OTP Program Status LED outputs will continue until a Device Reset.
Note that the OTP Program Status is always indicated via the LED outputs, regardless of the
LEDn_SRC register fields.
LED DRIVER
R16460
(404Ch)
Status LED1
R16461
(404Dh)
Status LED2
LED1
LED2
ADDRESS
OTP PROGRAM STATUS
OTP Auto Program
Complete
OTP Auto Progam Error
15:14
15:14
BIT
DESCRIPTION
LED1_SRC
[1:0]
LED2_SRC
[1:0]
LABEL
Constant
Constant
DEFAULT
DRIVE MODE
11
11
LED1 Source
(Selects the LED1 function.)
00 = Off
01 = Power State Status
10 = Charger Status
11 = Manual Mode
Note: LED1 also indicates
completion of OTP Auto Program
LED2 Source
(Selects the LED2 function.)
00 = Off
01 = Power State Status
10 = Charger Status
11 = Manual Mode
Note: LED2 also indicates an OTP
Auto Program Error condition
LED ‘ON’
n/a
n/a
PP, December 2009, Rev 3.0
TIME
DESCRIPTION
DUTY CYCLE
n/a
n/a
Pre-Production
ON:OFF
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