STA308A13TR STMicroelectronics, STA308A13TR Datasheet - Page 42

• Manufacturer Part Number: STA308A13TR
• Description: IC AUDIO PROCESSOR DGTL 64-TQFP
• Manufacturer: STMicroelectronics
• Series: DDX™r
• Type: Audio Processorr

Specifications of STA308A13TR

• Mounting Type: Surface Mount
• Package / Case: 64-TQFP, 64-VQFP
• Applications: Digital Audio
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Applications: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Registers
7.2.40
7.2.41
42/63
EGEQ - graphic EQ 8-kHz band (0x27)
Biquad internal channel loop-through (0x28)
Each internal processing channel can receive two possible inputs at the input to the biquad
block. The input can come either from the output of that channel’s MIX#1 engine or from the
output of the bass/treble (Biquad#10) of the previous channel. In this scenario, channel 1
receives channel 8. This enables the use of more than 10 biquads on any given channel at
the loss of the number of separate internal processing channels.
D7
C8BLP
0
11111
11110
11101
…
10000
01111
01110
…
00001
00000
7:0
Bit
D7
RW
RW
D6
C7BLP
0
0
D6
RST
xGEQ[4:0]
CnBLP
D5
C6BLP
0
D5
Name
EGEQ4
0
D4
C5BLP
0
D4
For n = 1 to 8:
0: input from channel n MIX#1 engine output - normal
operation
1: input from channel (n - 1) biquad #10 output - loop
operation.
EGEQ3
1
D3
C4BLP
0
+16
+15
+14
…
+1
0
-1
…
-14
-15
D3
EGEQ2
1
D2
C3BLP
0
Description
D2
Boost / cut
EGEQ1
1
D1
C2BLP
0
D1
EGEQ0
1
D0
C1BLP
0
STA308A
D0