參數(shù)資料
型號(hào)： P95020NQG8
廠商： INTEGRATED DEVICE TECHNOLOGY INC
元件分類： 電源管理
英文描述： 2-CHANNEL POWER SUPPLY MANAGEMENT CKT, QCC132
封裝： 10 X 10 MM, 0.85 MM HEIGHT, QFN-132
文件頁數(shù)： 103/169頁
文件大小： 4297K
代理商： P95020NQG8
IDTP95020
Product Datasheet
September 2, 2011 Revision 1.3 Final
39
2011 Integrated Device Technology, Inc.
Audio – Control Registers
The Audio Class-D Module can be controlled and monitored by writing 8-bit control words to the various Registers as
described below. The Base addresses are defined in Table 11 – Register Address Global Mapping on Page 16.
RESERVED Registers
These registers are reserved. Do not write to them.
IC Address = Page-1: 16(0x10), C Address = 0xA110
thru Page-1: 159(0x9F), C Address = 0xA19F
IC Address = Page-1: 164(0xA4), C Address = 0xA1A4
thru Page-1: 165(0xA5), C Address = 0xA1A5
IC Address = Page-1: 205(0xCD), C Address = 0xA1CD
thru Page-1: 208(0xD0), C Address = 0xA1D0
IC Address = Page-1: 212(0xD4), C Address = 0xA1D4
thru Page-1: 255(0xEF), C Address = 0xA1EF
Audio Control Register
AUDIO_CTRL: IC Address = Page-0: 56(0x38), C Address = 0xA038
Table 43. Audio Control Register
BIT
BIT NAME
DEFAULT
SETTING
USER
TYPE
VALUE
DESCRIPTION / COMMENTS
0
AUDIO_RST
0b
RW1A
Write “1” to reset audio subsystem. Internal logic will
reset this bit to “0” after 250 ns.
1
AUDIO_EN
0b
RW
0b = Disable
1b = Enable
Disabled state will put audio subsystem in low power
state (analog in standby and PLL shut-off).
2
AUDIO_DIG_DIS
0b
RW
0b = Enable
1b = Disable
Enable/disable digital audio to conserve power
3
CLASSD_DIG_DIS 0b
RW
0b = Enable
1b = Disable
Enable/disable digital Class-D to conserve power
[7:4]
RESERVED
0h
RW
RESERVED
DAC0 Volume Control Registers (DAC0x_VOL)
These registers manage the output signal volume for DAC0, Left and Right respectively.
-
The MSB, bit 7, of each register is the mute bit. When this bit is set, the output is silent.
-
There are 128 gain selections from 0 dB to -95.25 dB. The step size is 0.75 dB.
DAC0L_VOL: IC Address = Page-1: 160(0xA0), C Address = 0xA1A0
Table 44. DAC0 Volume Control Register (Left)
BIT
BIT NAME DEFAULT SETTING USER TYPE VALUE
DESCRIPTION / COMMENTS
[6:0] LEVEL_L
0000000b
RW
00h = 0 dB attenuation
3Fh = 95.25 dB attenuation
Left Volume Control
7
MUTE_L
1b
RW
0 = Not Muted
1 = Muted
Left Mute
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