WM8978 Wolfson Microelectronics Ltd., WM8978 Datasheet - Page 53

• Manufacturer Part Number: WM8978
• Description: The WM8978 is a low power, high quality stereo codec designed for portable applications such as Digital still camera or Digital Camcorde
• Manufacturer: Wolfson Microelectronics Ltd.

Preliminary Technical Data
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Table 35 OUT1 Volume Control
R52
LOUT1
Volume
control
R53
ROUT1
Volume
control
REGISTER
ADDRESS
7
6
5:0
8
7
6
5:0
8
BIT
LOUT1ZC
LOUT1MUTE
LOUT1VOL
HPVU
ROUT1ZC
ROUT1MUTE
ROUT1VOL
HPVU
LABEL
Not latched
Not latched
DEFAULT
111001
111001
0
0
0
0
Headphone volume zero cross
enable:
1 = Change gain on zero cross only
0 = Change gain immediately
Left headphone output mute:
0 = Normal operation
1 = Mute
000000 = -57dB
...
111001 = 0dB
...
111111 = +6dB
LOUT1 and ROUT1 volumes do not
update until a 1 is written to HPVU
(in reg 52 or 53)
Headphone volume zero cross
enable:
1 = Change gain on zero cross only
0 = Change gain immediately
Right headphone output mute:
0 = Normal operation
1 = Mute
Right headphone output volume:
000000 = -57dB
...
111001 = 0dB
...
111111 = +6dB
LOUT1 and ROUT1 volumes do not
update until a 1 is written to HPVU
(in reg 52 or 53)
Left headphone output volume:
PTD Rev 2.6 November 2005
DESCRIPTION
WM8978
53