參數(shù)資料
型號: PCF50732
廠商: NXP Semiconductors N.V.
英文描述: Baseband and audio interface for GSM
中文描述: 用于GSM基帶和音頻接口
文件頁數(shù): 31/64頁
文件大?。?/td> 322K
代理商: PCF50732
1999 May 03
31
Philips Semiconductors
Objective specification
Baseband and audio interface for GSM
PCF50732
12.3.7.1
Possible gain selections for voice band blocks: RXPGA, TXPGA, RXVOL and SidePGA
Table 25 shows the possible gain selections for the voice band blocks RXPGA, TXPG, RXVOL and SidePGA. It should
be noted that not all possible combinations of these volume settings are meaningful; setting RXPGA, SidePGA and
RXVOL to maximum will result in clipping of the output signal.
Table 25
Gain selections
BINARY
CODE
GAIN (dB)
RXPGA/TXPGA
RXVOL/SidePGA
111111
111110
111101
111100
111011
111010
111001
111000
110111
110110
110101
110100
110011
110010
110001
110000
101111
101110
101101
101100
101011
101010
101001
101000
100111
100110
100101
100100
100011
100010
100001
100000
11.88
11.74
11.60
11.46
11.31
11.17
11.01
10.86
10.70
10.54
10.38
10.22
10.05
9.88
9.70
9.52
9.34
9.15
8.96
8.77
8.57
8.36
8.15
7.94
7.72
7.49
7.26
7.02
6.78
6.53
6.27
6.00
5.88
5.74
5.60
5.46
5.31
5.17
5.01
4.86
4.70
4.54
4.38
4.22
4.05
3.88
3.70
3.52
3.34
3.15
2.96
2.77
2.57
2.36
2.15
1.94
1.72
1.49
1.26
1.02
0.78
0.53
0.27
0.00
011111
011110
011101
011100
011011
011010
011001
011000
010111
010110
010101
010100
010011
010010
010001
010000
001111
001110
001101
001100
001011
001010
001001
001000
000111
000110
000101
000100
000011
000010
000001
000000
5.72
5.44
5.14
4.84
4.52
4.20
3.86
3.50
3.13
2.75
2.34
1.92
1.47
1.00
0.51
0.00
0.58
1.18
1.82
2.52
3.28
4.10
5.02
6.04
7.20
8.54
10.12
12.06
14.56
18.08
24.10
off
0.28
0.56
0.86
1.16
1.48
1.80
2.14
2.50
2.87
3.25
3.66
4.08
4.53
5.00
5.49
6.02
6.58
7.18
7.82
8.52
9.28
10.10
11.02
12.04
13.20
14.54
16.12
18.06
20.56
24.08
30.10
off
BINARY
CODE
GAIN (dB)
RXPGA/TXPGA
RXVOL/SidePGA
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