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(yè)數(shù): 114/169頁(yè)
文件大小: 4297K
代理商: P95020NQG8
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IDTP95020
Product Datasheet
September 2, 2011 Revision 1.3 Final
49
2011 Integrated Device Technology, Inc.
AGC1 to AGC5 Automatic Gain Control Registers
AGCSET1: IC Address = Page-1: 188(0xBC), C Address = 0xA1BC
Table 70. AGC1 Automatic Gain Control Register
BIT
NAME
DEFAULT
SETTING
USER
TYPE
VALUE
DESCRIPTION / COMMENTS
[3:0] TARGET
2h
RW
Gain control programmable in 1.5 dB steps.
For example 0h = 0 dB, , 1h = -1.5 dB and
Fh = -22.5 dB.
[7:4] DELAY
2h
RW
Delay Time = 2^(x+6)*base_time sec
Delay base time is configured by
{basetime_ctrl_sign, mag}
Delay Time: BASETIME_CTRL_SIGN and
BASETIME_CTRL_MAG (0xBF bit[7] and
bit[6:5]) defines AGC function operation
basetime unit.
AGCSET2: IC Address = Page-1: 189(0xBD), C Address = 0xA1BD
Table 71. AGC2 Automatic Gain Control Register
BIT
NAME
DEFAULT
SETTING
USER
TYPE
VALUE
DESCRIPTION / COMMENTS
[3:0] ATTACK
0h
RW
2^(n+9)*base_time, n>10,
use n=10
Attack time is the time that it takes the AGC to ramp
down across its gain range.
[7:4] DECAY
0h
RW
2^(n+11)*base_time
Attack time is the time that it takes the AGC to ramp
up across its gain range
AGCSET3: IC Address = Page-1: 190(0xBE), C Address = 0xA1BE
Table 72. AGC3 Automatic Gain Control Register
BIT
BIT NAME
DEFAULT SETTING USER TYPE VALUE
DESCRIPTION / COMMENTS
[5:0] THRESHOLD
000000b
RW
000000b = -24 dB
100000b = -72 dB
-72 dB ~ -24 dB, in 1.5 dB per step
6
AGCEN_RIGHT 0b
RW
0 = Disable
1 = Enable
Right Channel AGC Enable
7
AGCEN_LEFT
0b
RW
0 = Disable
1 = Enable
Left Channel AGC Enable
AGCSET4: IC Address = Page-1: 191(0xBF), C Address = 0xA1BF
Table 73. AGC4 Automatic Gain Control Register
BIT
BIT NAME
DEFAULT
SETTING
USER
TYPE
VALUE
DESCRIPTION / COMMENTS
[4:0] MIN_GAIN
00000b
RW
00000b = 0 dB
10100b = 30 dB
0 ~ 30 dB, 1.5 dB per step
[7:5] BASETIME_CTRL_MAG 000b
RW
000 = a, 001 = 2a, 010 = 4a, 011 = 8a,
101 = a/2, 110 = a/4, 111 = a/8
AGC basetime unit. a = 1/(8 x
44100) second
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