WM8986GECO/V Wolfson Microelectronics, WM8986GECO/V Datasheet - Page 62

• Manufacturer Part Number: WM8986GECO/V
• Description: Audio Amplifiers Class D Headphone DAC + Line Out
• Manufacturer: Wolfson Microelectronics

Specifications of WM8986GECO/V

• Product: Class-D
• Output Power: 40 mW
• Thd Plus Noise: - 86 dB
• Operating Supply Voltage: 1.71 V to 3.6 V, 2.5 V to 3.6 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Audio Load Resistance: 16 Ohms
• Minimum Operating Temperature: - 40 C
• Output Signal Type: Differential
• Supply Voltage (max): 3.6 V
• Supply Voltage (min): 1.71 V, 2.5 V
• Output Type: Differential
• Package / Case: QFN-28
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

WM8986
CONTROL INTERFACE
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Table 35 Jack Detect Register Control Bits
SELECTION OF CONTROL MODE AND 2-WIRE MODE ADDRESS
The control interface can operate as either a 3-wire or 2-wire control interface. The MODE pin
determines the 2 or 3 wire mode as shown in Table 36.
The WM8986 is controlled by writing to registers through a serial control interface. A control word
consists of 16 bits. The first 7 bits (B15 to B9) are register address bits that select which control
register is accessed. The remaining 9 bits (B8 to B0) are data bits, corresponding to the 9 data bits in
each control register.
Table 36 Control Interface Mode Selection
3-WIRE SERIAL CONTROL MODE
In 3-wire mode, every rising edge of SCLK clocks in one data bit from the SDIN pin. A rising edge on
CSB/GPIO latches in a complete control word consisting of the last 16 bits.
Figure 34 3-Wire Serial Control Interface
R9 (09h)
GPIO control
R13 (00h)
REGISTER
ADDRESS
MODE
High
Low
6
3:0
7:4
BIT
JD_EN
JD_EN0
JD_EN1
LABEL
INTERFACE FORMAT
2 wire
3 wire
0
0000
0000
DEFAULT
Jack Detection Enable
0 = disabled
1 = enabled
Output enables when selected jack
detection input is logic 0.
[0]= OUT1_EN_0
[1]= OUT2_EN_0
[2]= OUT3_EN_0
[3]= OUT4_EN_0
Output enables when selected jack
detection input is logic 1
[4]= OUT1_EN_1
[5]= OUT2_EN_1
[6]= OUT3_EN_1
[7]= OUT4_EN_1
DESCRIPTION
PD, Rev 4.1, June 2009
Production Data
62