參數資料
型號: 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: 96/169頁
文件大?。?/td> 4297K
代理商: P95020NQG8
IDTP95020
Product Datasheet
September 2, 2011 Revision 1.3 Final
32
2011 Integrated Device Technology, Inc.
CONFIG1: IC Address = Page-2: 25(0x19), C Address = 0xA219
Table 25. Class D – CONFIG1 Register
BIT
BIT NAME
DEFAULT
SETTING
USER
TYPE
VALUE
DESCRIPTION / COMMENTS
0
dc_bypass
0b
RW
1 = bypass DC Filter
[2:1] fira_ratio
10b
R
00 = interpolate by 2
01 = bypass
10 = decimate by 2
11 = reserved
Fira ratio
3
firb_bypass
0b
RW
1 = bypass firb interpolation
4
firc_bypass
0b
RW
1 = bypass firc interpolation
5
eq_bypass
1b
RW
1 = bypass equalization filter (must init
EQRAM)
6
prescale_bypass
1b
RW
1 = bypass EQ prescaler (must init EQRAM)
7
RESERVED
0b
RW
RESERVED
Class D – PWM Registers
This is a 32-bit register = {PWM3, PWM2, PWM1, PWM0}.
PWM3: IC Address = Page-2: 28(0x1C), C Address = 0xA21C
PWM2: IC Address = Page-2: 29(0x1D), C Address = 0xA21D
PWM1: IC Address = Page-2: 30(0x1E), C Address = 0xA21E
PWM0: IC Address = Page-2: 31(0x1F), C Address = 0xA21F
Table 26. Class D – PWM Registers
BIT
BIT NAME
DEFAULT
SETTING
USER
TYPE
DESCRIPTION / COMMENTS
0
RESERVED
0b
RW
RESERVED
1
RESERVED
0b
RW
RESERVED
2
fourthorder
1b
RW
1 = 4th order binomial filter, 0 = 3rd order, noise
improve of 6dB by setting this bit to 0
3
RESERVED
0b
RW
RESERVED
4
roundup
1b
RW
1 = roundup, 0 = truncate for quantizer
5
clk320mode
1b
RW
1 = PCA clock mode, pclk = 2560*Fs, 0 = 2048*Fs
[7:6]
RESERVED
00b
RW
RESERVED
8
RESERVED
0b
RW
RESERVED
9
RESERVED
0b
RW
RESERVED
[14:10]
Dithpos
00000b
RW
Dither position
15
RESERVED
0b
RW
RESERVED
16
RESERVED
1b
RW
RESERVED
17
pwm_outflip
0b
RW
1 = swap pwm a/b output pair for all channels
[23:18]
dvalue
011000b
RW
dvalue constant field
[29:24]
cvalue
001010b
RW
tristate constant field, must be even and not 0
[31:30]
outctrl
00b
RW
pwm output muxing, 0 = normal, 1 = swap 0/1,
2 = ch0 on both, 3 = ch1 on both
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