參數(shù)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(shù)： 100/169頁
文件大小： 4297K
代理商： P95020NQG8
IDTP95020
Product Datasheet
September 2, 2011 Revision 1.3 Final
36
2011 Integrated Device Technology, Inc.
Class D – LMTHOLDTIME Register
Controls operation of the Volume Limiter (Compressor) Hold Time
LMTHOLDTIME: IC Address = Page-2: 42 (0x2A), C Address = 0xA22A
Table 35. Class D – LMTHOLDTIME Register
BIT
NAME
DEFAULT
SETTINGS
USER
TYPE
VALUE
DESCRIPTION / COMMENTS
[6:0] time
0000000b
RW
Timer value in units of 1 ms or 10 ms.
7
time10ms
0b
RW
0 = value in bits [6:0] is in 1 ms units
1 = value in bits [6:0] is in 10 ms units
1 = value in bits 6:0 is in 10ms units,
otherwise 1ms units.
CLASS D – LMTATKTH and LMTRELTH Registers
These 16-bit registers set the threshold values. When in attack phase and the Attack Threshold is exceeded the Compressor
attenuation is incremented by ‘stepsize’ (see LMTCTRL). When in release phase and the Release Threshold is not exceeded,
the Compressor attenuation is incremented by ‘stepsize’ (but not above 0).
LMTATKTH_HI: IC Address = Page-2: 43(0x2B), C Address = 0xA22B
LMTATKTH_LO: IC Address = Page-2: 44(0x2C), C Address = 0xA22C
LMTRELTH_HI: IC Address = Page-2: 45(0x2D), C Address = 0xA22D
LMTRELTH_LO: IC Address = Page-2: 46(0x2E), C Address = 0xA22E
Table 36. Class D – LMTATKTH and LMTRELTH Registers
BIT
BIT NAME
DEFAULT
SETTINGS
USER
TYPE
DESCRIPTION / COMMENTS
[7:0 ]
threshold[7:0]
00h
RW
Always 0. It usually isn’t necessary to provide threshold
resolution to the point where these lower 8 bits would be used.
[15:8 ] threshold[15:8] 00h
RW
FFh would equal threshold level of +2.0dB. Each step below
this 8 bit full scale value reduces threshold level by 0.0078 dB.
Class D – DC_COEF_SEL Register
Select bit coefficient for DC Filter.
DC_COEF_SEL: IC Address = Page-2: 48(0x30), C Address = 0xA230
Table 37. Class D – DC_COEF_SEL Register
BIT
BIT NAME
DEFAULT
SETTINGS
USER
TYPE
VALUE
DESCRIPTION / COMMENTS
[2:0] DC_COEF_SEL 101b
RW
0 = 24'h100000; // 2^^-3 = 0.125
1 = 24'h040000
2 = 24'h010000
3 = 24'h004000
4 = 24'h001000
5 = 24'h000400
6 = 24'h000100; // 2^^-15 = 0.00030517
7 = 24'h000040; // 2^^-17
DC Filter Coefficient Selection
[7:3] RESERVED
00000b
RW
RESERVED
相關(guān)PDF資料
PDF描述
P95020ZNQGI8 2-CHANNEL POWER SUPPLY MANAGEMENT CKT, QCC132
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