WM8311GEB/V Wolfson Microelectronics, WM8311GEB/V Datasheet - Page 230

• Manufacturer Part Number: WM8311GEB/V
• Description: POWER MANAGEMENT SUBSYSTEM, 121BGA
• Manufacturer: Wolfson Microelectronics

Specifications of WM8311GEB/V

• Supply Voltage: 5.5V
• No. Of Step-down Dc - Dc Converters: 4
• No. Of Ldo Regulators: 7
• Digital Ic Case Style: BGA
• No. Of Pins: 121
• No. Of Regulated Outputs: 9
• Operating Temperature Range: -40°C To
• Rohs Compliant: Yes
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

WM8311
REGISTER
Register 404Dh Status LED 2
REGISTER
R16462
(404Eh)
Current Sink
1
Register 404Eh Current Sink 1
w
ADDRESS
ADDRESS
11:10
BIT
BIT
9:8
5:0
15
14
13
12
CS1_ON_RAM
CS1_ISEL[5:0]
CS1_SLPENA
CS1_OFF_RA
CS1_DRIVE
CS1_ENA
CS1_STS
LABEL
LABEL
MP[1:0]
P[1:0]
DEFAULT
DEFAULT
00_0000
01
01
0
0
0
0
10 = 1:3 (25% on)
11 = 1:7 (12.5% on)
Current Sink 1 Enable (ISINK1 pin)
0 = Disabled
1 = Enabled
Note - this bit is reset to 0 when the OFF power state is
entered.
Current Sink 1 output drive enable
0 = Disabled
1 = Enabled
Current Sink 1 status
0 = Normal
1 = Sink current cannot be regulated
Current Sink 1 SLEEP Enable
0 = Disabled
1 = Controlled by CS1_ENA
ISINK1 Switch-Off ramp
00 = instant (no ramp)
01 = 1 step every 4ms (220ms)
10 = 1 step every 8ms (440ms)
11 = 1 step every 16ms (880ms)
The time quoted in brackets is valid for the maximum
change in current drive setting. The actual time scales
according to the extent of the change in current drive
setting.
ISINK1 Switch-On ramp
00 = instant (no ramp)
01 = 1 step every 4ms (220ms)
10 = 1 step every 8ms (440ms)
11 = 1 step every 16ms (880ms)
The time quoted in brackets is valid for the maximum
change in current drive setting. The actual time scales
according to the extent of the change in current drive
setting.
ISINK1 current.
Current = 2.0μA × 2^(CS1_ISEL/4), where CS1_ISEL
is an unsigned binary number.
Alternatively,
CS1_ISEL = 13.29 x LOG(current/2.0μA)
00_0000 = 2.0μA
11_0111 = 27.6mA
Values greater than 11_0111 will result in the maximum
current of approx 27.6mA.
DESCRIPTION
DESCRIPTION
PP, December 2009, Rev 3.0
REFER TO
REFER TO
Pre-Production
230