LMV1089RLEVAL National Semiconductor, LMV1089RLEVAL Datasheet - Page 20

• Manufacturer Part Number: LMV1089RLEVAL
• Description: BOARD EVALUATION LMV1089
• Manufacturer: National Semiconductor
• Series: PowerWise®r

Specifications of LMV1089RLEVAL

• Main Purpose: Audio, Microphone Amp
• Embedded: No
• Utilized Ic / Part: LMV1089
• Primary Attributes: Dual Input, Single Output
• Secondary Attributes: Graphical User Interface, I²C Interface
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

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Address
0x0Efh
0x0Ch
0x0Dh
0x01h
0x02h
Reg. Bits
M
N
N
A
A
A
B
B
B
L
[3:0]
[5:4]
[7:6]
[2:0]
[4:3]
[7:5] Not Used
[7:0] reads the output of the EEPROM
[7:0] reads the output of the EEPROM
[6:0] reads the output of the EEPROM
[7]
Microphone preamplifier gain from 6dB up to 36dB in 2dB steps.
A4 = mute mic1 and A5 = mute mic2.
( 0 = microphone on)
Mic enable bits, A6 = enable Mic1, A7 = enable Mic2
(1 = enable), A6 and A7 both 0 = Shutdown Mode
Gain setting for the post amplifier from (3dB steps)
000
001
010
011
100
101
110
111
Mic select bits
Reads the “ready” signal. This give the status of the program cycle.
1 = ready ; 0 = program cycle in progress
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
0
0
1
1
TABLE 6. I
12dB
15dB
18dB
18dB
18dB
18dB
9dB
6db
0
1
0
1
2
C Register Description
10dB
12dB
14dB
16dB
18dB
20dB
22dB
24dB
26dB
28dB
30dB
32dB
34dB
36dB
20
6dB
8dB
Description
Noise cancelling mode
Only Mic1 enabled
Only Mic2 enabled
Mic1 + Mic2
See Table 2
See Table 3
read only
read only
read only
read only
Default
00(on)
11(on)
000
00