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参数资料
型号： TAS3103DBTG4
厂商： TEXAS INSTRUMENTS INC
元件分类： 消费家电
英文描述： SPECIALTY CONSUMER CIRCUIT, PDSO38
封装： GREEN, PLASTIC, TSSOP-38
文件页数： 121/148页
文件大小： 1247K
代理商： TAS3103DBTG4
315
Table 33. Treble Shelf Filter Indices for 1/2-dB Adjustments
ADJUSTMENT
(DB)
INDEX(1)
ADJUSTMENT
(DB)
INDEX(1)
ADJUSTMENT
(DB)
INDEX(1)
18
0x01
5.5
0x63
7
0x80
17.5
0x09
5
0x65
7.5
0x81
17
0x10
4.5
0x66
8
0x82
16.5
0x16
40
0x68
8.5
0x83
16
0x1C
3.5
0x69
9
0x84
15.5
0x22
3
0x6B
9.5
0x85
15
0x28
2.5
0x6C
10
0x86
14.5
0x2D
2
0x6D
10.5
0x87
14
0x31
1.5
0x6F
11
0x88
13.5
0x35
1
0x70
11.5
0x89
13
0x3A
0.5
0x71
12
0x8A
12.5
0x3E
0
0x72
12.5
0x8B
12
0x42
0.5
0x73
13
0x8C
11.5
0x45
1
0x74
13.5
0x8D
11
0x49
1.5
0x75
14
0x8E
10.5
0x4C
2
0x76
14.5
0x8F
10
0x4F
2.5
0x77
15
0x90
9.5
0x52
3
0x78
15.5
0x91
9
0x55
3.5
0x79
16
0x92
8.5
0x57
4
0x7A
16.5
0x93
8
0x5A
4.5
0x7B
17
0x94
7.5
0x5C
5
0x7C
17.5
0x95
7
0x5E
5.5
0x7D
18
0x96
6.5
0x60
6
0x7E
6
0x62
6.5
0x7F
(1) CH1 Index is Subaddress 0xF8, Bit Field 7:0. CH2 Index is Subaddress 0xF8, Bit Field 15:8. CH3
Index is Subaddress 0xF8, Bit Field 23:16.
3.5.1
Treble and Bass Processing and Concurrent I2C Read Transactions
I2C read transactions at subaddresses 0x01 through 0xD1 are not allowed during: (1) transitions between filter
shelves within a given bass or treble filter set or (2) transitions between filter sets. This means that after issuing an
I2C command to change treble or bass filter shelves or filter sets, time must be allowed to complete the bass/treble
activity before proceeding to read subaddresses 0x01 through 0xD1. There is no subaddress available to directly
monitor bass/treble activity. However, there is a means of probing the state of bass/treble activity via the factory test
subaddresses 0xEC and 0xED.
If it is required to read subaddress data that falls in the subaddress range of 0x01 through 0xD1 after issuing an I2C
command to change treble or bass filter shelves or filter sets, the procedure presented in Figure 314 can be used
to monitor bass/treble activity. As Figure 314 shows, six readings must be taken to verify that none of the three
monaural channels have on-going bass or treble activity. If all six readings show the value zero in the 8th or least
significant byte of the 8-byte data word output at subaddress 0xED, then all commanded bass/treble activity has
completed and it is safe to resume I2C read transactions at subaddresses 0x01 through 0xD1.
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