WM9090ECS/R Wolfson Microelectronics, WM9090ECS/R Datasheet - Page 23

• Manufacturer Part Number: WM9090ECS/R
• Description: Audio CODECs Audio Subsystem w/ capless headphones
• Manufacturer: Wolfson Microelectronics

Specifications of WM9090ECS/R

• Interface Type: 2-Wire, l2C
• Thd Plus Noise: 80 dB
• Ic Function: Ultra Low Power Audio Subsystem
• Brief Features: Mono Class D Speaker Driver, Automatic Gain Control (AGC)
• Supply Voltage Range: 2.7V To 5.5V
• Operating Temperature Range: -40°C To +85°C
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

w
Pre-Production
Table 9 Right Output Mixer (MIXOUTR) Control
HEADPHONE OUTPUT VOLUME CONTROL
The headphone output PGA controls are shown in Table 10.
A zero-cross function is provided on the headphone output PGAs. Note that the timeout clock
TOCLK must be enabled when using the zero-cross function. See “Clocking Control” for more
information on the TOCLK control fields.
The HPOUT1_VU bits control the loading of the headphone PGA volume data. When HPOUT1_VU
is set to 0, the volume control data will be loaded into the respective control register, but will not
actually change the gain setting. The headphone PGA volume settings are both updated when a 1 is
written to either HPOUT1_VU bit. This makes it possible to update the gain of the left and right
output paths simultaneously.
R28 (1Ch)
Left Output
Volume
REGISTER
ADDRESS
REGISTER
ADDRESS
BIT
5:0
BIT
7:6
5:4
3:2
1:0
8
7
6
IN1A_MIXOUTR_VOL
[1:0]
IN1B_MIXOUTR_VOL
[1:0]
IN2A_MIXOUTR_VOL
[1:0]
IN2B_MIXOUTR_VOL
[1:0]
HPOUT1_VU
HPOUT1L_ZC
HPOUT1L_MUTE
HPOUT1L_VOL [5:0]
LABEL
LABEL
DEFAULT
DEFAULT
(-12dB)
2Dh
N/A
0
0
00
00
00
00
Headphone Output PGA Volume
Update
Writing a 1 to this bit will update
HPOUT1LVOL and HPOUT1RVOL
volumes simultaneously.
Left Headphone Output PGA Zero
Cross Control
0 = Change gain immediately
1 = Change gain on zero cross only
Left Headphone Output PGA Mute
0 = Un-mute
1 = Mute
Left Headphone Output PGA
Volume
-57dB to +6dB in 1dB steps
(See Table 11 for output PGA
volume control range)
IN1A to MIXOUTR volume control
00 = 0dB
01 = -6dB
10 = -9dB
11 = -12dB
IN1B to MIXOUTR volume control
00 = 0dB
01 = -6dB
10 = -9dB
11 = -12dB
IN2A to MIXOUTR volume control
00 = 0dB
01 = -6dB
10 = -9dB
11 = -12dB
IN2B to MIXOUTR volume control
00 = 0dB
01 = -6dB
10 = -9dB
11 = -12dB
PP, January 2010, Rev 3.0
DESCRIPTION
DESCRIPTION
WM9090
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