參數(shù)資料
型號: TAS5508BPAGRG4
廠商: TEXAS INSTRUMENTS INC
元件分類: 消費(fèi)家電
英文描述: SPECIALTY CONSUMER CIRCUIT, PQFP64
封裝: GREEN, PLASTIC, TQFP-64
文件頁數(shù): 92/103頁
文件大?。?/td> 1198K
代理商: TAS5508BPAGRG4
7.25 PSVC Volume Biquad Register (0xCF)
TAS5508B
8-Channel Digital Audio PWM Processor
www.ti.com
SLES162C – DECEMBER 2005 – REVISED JULY 2009
Table 7-28. Output Mixer Register Format (Lower 4 Bytes) (continued)
D31
D30
D29
D28
D27
D26
D25
D24
FUNCTION
0
1
0
Select channel 5 to output mixer
0
1
0
1
Select channel 6 to output mixer
0
1
0
Select channel 7 to output mixer
0
1
Select channel 8 to output mixer
G27
G26
G25
G24
Selected channel gain (upper 4 bits)
D23
D22
D21
D20
D19
D18
D17
D16
FUNCTION
G23
G22
G21
G20
G19
G18
G17
G16
Selected channel gain (continued)
D15
D14
D13
D12
D11
D10
D9
D8
FUNCTION
G15
G14
G13
G12
G11
G10
G9
G8
Selected channel gain (continued)
D7
D6
D5
D4
D3
D2
D1
D0
FUNCTION
G7
G6
G5
G4
G3
G2
G1
G0
Selected channel gain (lower 8 bits)
Each gain coefficient is in 28-bit (5.23) format, so 0x80 0000 is a gain of 1. Each gain coefficient is written
as a 32-bit word with the upper four bits not used. Note that this register should be used only with the
PSVC feature its use is not required. For systems not using this feature, it is recommended that this
biquad be set to all-pass (default).
Table 7-29. Volume Biquad Register Format (Default = All-Pass)
DEFAULT GAIN COEFFICIENT VALUES
DESCRIPTION
REGISTER FIELD CONTENTS
DECIMAL
HEX
bo coefficient
u[31:28], b0[27:24], b0[23:16], b0[15:8], b0[7:0]
1.0
0x00, 0x80, 0x00, 0x00
b1 coefficient
u[31:28], b1[27:24], b1[23:16], b1[15:8], b1[7:0]
0.0
0x00, 0x00, 0x00, 0x00
b2 coefficient
u[31:28], b2[27:24], b2[23:16], b2[15:8], b2[7:0]
0.0
0x00, 0x00, 0x00, 0x00
a1 coefficient
u[31:28], a1[27:24], a1[23:16], a1[15:8], a1[7:0]
0.0
0x00, 0x00, 0x00, 0x00
a2 coefficient
u[31:28], a2[27:24], a2[23:16], a2[15:8], a2[7:0]
0.0
0x00, 0x00, 0x00, 0x00
Serial-Control Interface Register Definitions
89
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