參數(shù)資料
型號： LC07410LG
元件分類： 消費家電
英文描述： SPECIALTY CONSUMER CIRCUIT, PBGA40
封裝： 4.40 X 3.60 MM, FLGA-40
文件頁數(shù)： 15/36頁
文件大?。?/td> 367K
代理商： LC07410LG
LC07410LG
No.A1345-22/36
Digital Volume
Contained inside the D/A converter is a digital volume control, and by setting EVR_GAIN [6:0], the gain level can be
attenuated from +12dB (max) to -64dB or muted.
When EVR_ZCD is 0, the gain is changed immediately after setting EVR_GAIN [6:0].
When EVR_ZCD is 1, after setting EVR_GAIN [6:0] the gain is changed at the zero cross timing of the audio signals.
The timeout time for zero cross detection can be set using EVR_ZCDTM [1:0].
When EVR_SOFTSW is 1, the soft switching operation is performed, and after the EVR_GAIN [6:0] setting has been
changed, the gain automatically changes in 1-step increments until it arrives at the predetermined value. The period of
gain change can be set using EVR_SSC [1:0].
If EVR-SOFTSW is set to 1 and EVR_ZCD is set to 1, the D/A converter, after the lapse of the time defined by
EVR_SSC[1:0], repeats the cycle of waiting for the next zero cross point and changing the gain by 1 increment, until the
predetermined volume value is reached.
ADRS
Bit
Name
Init
Description
[7]
EVR_MUTE
1b
Controls the mute function of the EVR (digital) circuit.
1: Enables MUTE function. 0: Disables MUTE function.
10h
[6:0]
EVR_GAIN
00h
Controls the gain function of the EVR (digital) circuit. 00h: -64dB
57h: +12dB to 2Ch: -9.5dB/0.5dB step
2Bh: -10dB to 0Ch: -41dB/1.0dB step
0Bh: -42dB to 00h: -64dB/2.0dB step
[6]
EVR_VOLZCD
1b
Controls the gain change operation of the EVR (digital) circuit at zerocross timing.
1: Changes the gain at the zerocross timing.
0: Changes the gain without waiting for a zerocross timing.
[5:4]
EVR_ZCDTM
01b
Set the zerocross detection timeout time of the EVR (digital) circuit.
11: 8192/fs 10: 4096/fs 01: 2048/fs 00: 1024/fs
Valid when [EVR_ZCD] = 1
[2]
EVR_SOFTSW
1b
Controls the soft switch function of the EVR (digital) circuit.
1: ON 0: OFF
11h
[1:0]
EVR_VOLTM
00b
Set the time of the soft switch function of the EVR (digital) circuit (dos not depend on fs).
11, 10: Inhibited
01: 2.278ms/step, (200ms: When +12dB
MUTE)
00: 1.142ms/step, (100ms: When +12dB
MUTE)
Digital EVR Circuit Gain Setting Table
EVR_GAIN [6:0]
[6:0]
GAIN
[6:0]
GAIN
[6:0]
GAIN
[6:0]
GAIN
[6:0]
GAIN
00h
-64dB
12h
-35dB
24h
-17dB
36h
-4.5dB
48h
+4.5dB
01h
-62dB
13h
-34dB
25h
-16dB
37h
-4dB
49h
+5dB
02h
-60dB
14h
-33dB
26h
-15dB
38h
-3.5dB
4Ah
+5.5dB
03h
-58dB
15h
-32dB
27h
-14dB
39h
-3dB
4Bh
+6dB
04h
-56dB
16h
-31dB
28h
-13dB
3Ah
-2.5dB
4Ch
+6.5dB
05h
-54dB
17h
-30dB
29h
-12dB
3Bh
-2dB
4Dh
+7dB
06h
-52dB
18h
-29dB
2Ah
-11dB
3Ch
-1.5dB
4Eh
+7.5dB
07h
-50dB
19h
2Bh
-10dB
3Dh
-1dB
4Fh
+8dB
08h
-48dB
1Ah
-27dB
2Ch
-9.5dB
3Eh
-0.5dB
50h
+8.5dB
09h
-46dB
1Bh
-26dB
2Dh
-9dB
3Fh
+0dB
51h
+9dB
0Ah
-44dB
1Ch
-25dB
2Eh
-8.5dB
40h
+0.5dB
52h
+9.5dB
0Bh
-42dB
1Dh
-24dB
2Fh
-8dB
41h
+1dB
53h
+10dB
0Ch
-41dB
1Eh
-23dB
30h
-7.5dB
42h
+1.5dB
54h
+10.5dB
0Dh
-40dB
1Fh
-22dB
31h
-7dB
43h
+2dB
55h
+11dB
0Eh
-39dB
20h
-21dB
32h
-6.5dB
44h
+2.5dB
56h
+11.5dB
0Fh
-38dB
21h
-20dB
33h
-6dB
45h
+3dB
57h
+12dB
10h
-37dB
22h
-19dB
34h
-5.5dB
46h
+3.5dB
11h
-36dB
23h
-18dB
35h
-5dB
47h
+4dB
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