wm9714l Wolfson Microelectronics plc, wm9714l Datasheet - Page 77

• Manufacturer Part Number: wm9714l
• Description: Ac?97 Audio Codec
• Manufacturer: Wolfson Microelectronics plc

Pre-Production
EXTENDED POWERDOWN REGISTERS
w
Table 60 Extended Power Down Register (1) (Additional to AC’97 Rev 2.2)
Note:
1.
3Ch
Powerdown
(1)
Note: When analogue inputs or outputs are disabled, they are internally connected to VREF
through a large resistor (VREF=AVDD/2 except when VREF and VMID1M are both OFF). This
maintains the potential at that node and helps to eliminate pops when the pins are re-enabled.
REGISTER
ADDRESS
When disabling a PGA, always ensure that it is muted first.
15
14
13
12
11
10
9
7
6
5
4
3
2
1
0
BIT
PADCPD
VMID1M
TSHUT
VXDAC
AUXDAC
VREF
PLL
DACL
DACR
ADCL
ADCR
HPLX
HPRX
SPKX
MX
LABEL
1
(disabled)
1
(disabled)
1
(disabled)
1
(disabled)
1
(disabled)
1
(disabled)
1
(disabled)
1
(disabled)
1
(disabled)
1
(disabled)
1
(disabled)
1
(disabled)
1
(disabled)
1
(disabled)
1
(disabled)
DEFAULT
AUXADC Disable Control
1 = Disabled
0 = Enabled
1Meg VMID String Disable Control
1 = Disabled
0 = Enabled
Thermal Shutdown Disable Control
1 = Disabled
0 = Enabled
Voice DAC Disable Control
1 = Disabled
0 = Enabled
AUXDAC Disable Control
1 = Disabled
0 = Enabled
VREF Disable Control
1 = Disabled
0 = Enabled
PLL Disable Control
1 = Disabled
0 = Enabled
Left DAC Disable Control (see Note 1)
1 = Disabled
0 = Enabled
Right DAC Disable Control (see Note 1)
1 = Disabled
0 = Enabled
Left ADC Disable Control
1 = Disabled
0 = Enabled
Right ADC Disable Control
1 = Disabled
0 = Enabled
Left Headphone Mixer Disable Control
1 = Disabled
0 = Enabled
Right Headphone Mixer Disable Control
1 = Disabled
0 = Enabled
Speaker Mixer Disable Control
1 = Disabled
0 = Enabled
Mono Mixer Disable Control
1 = Disabled
0 = Enabled
DESCRIPTION
PP, Rev 3.2, October 2008
WM9714L
77