ak7746 ETC-unknow, ak7746 Datasheet
ak7746
Manufacturer Part Number
ak7746
Description
Audio With 5-channel 24-bit Input
Manufacturer
ETC-unknow
Datasheet
1.AK7746.pdf
(62 pages)
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The AK7746 is a highly integrated audio processor, including 5 A/D channels, an input mux that can select 2 stereo pairs
from 8 stereo inputs, and an on-chip DSP. High quality analog performance is provided by the ADC’s achieving 98dB
(48kHz) dynamic range. The A/D supports sampling frequencies from 8kHz to 96kHz. The AK7746 includes 72kbits of
SRAM for audio delay that is suitable for simulated surround functions and speaker compensation. The programmable
DSP allows up to 4608 execution lines per audio sample cycle at 8kHz, 768 lines at 48kHz, or 384 lines at 96kHz with
multiple functions per line. The AK7746 can be used to implement complete sound field control, such as echo, 3D,
parametric equalization, etc. It is packaged in a 64-lead LQFP.
[MS0369-E00]
DSP:
ADC: 4 channels (2 channels 2 sets )
ADC: Monaural 1 channel
Other
[ASAHI KASEI]
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Word length:
Instruction cycle time:
Multiplier:
Divider:
ALU:
Shift+Register:
Program RAM:
Coefficient RAM:
Data RAM:
Offset RAM:
Internal Memory:
Sampling frequency:
Serial interface port for micro-controller
Master clock:
Master/Slave operation
Serial signal input port ( 8(10) ch ):16/20/24-bit : Output port ( 8ch + 4ch ): 24-bit
24-bit 64 x Over-sampling delta sigma
Sampling frequency:
DR:
S/N :
S/(N+D) :
Digital HPF (fc = 1Hz)
Single-ended or Full-differential Input
24-bit 64x Over-sampling delta sigma
Sampling frequency:
DR:
S/N :
S/(N+D) :
External Jump pin:
CRC error check function
LRCLK and BITCLK input and output for slave mode
Power supply:
Operating temperature range:
Package:
Audio DSP with 5-channel 24-bit ADC and Input Mux
1. General Description
2. Features
(Other numbers in parentheses are restricted.
Provided with indirect shift function)
24-bit (Data RAM)
27ns (768fs, fs=48kHz )
24 x 16 → 40-bit
24 / 24 → 16-bit or 24-bit
34-bit arithmetic operation (Overflow margin: 4bit)
24-bit arithmetic and logic operation
1, 2, 3, 4, 6, 8 and 15 bits shifted left
1, 2, 3, 4, 8 and 15 bits shifted right
768 x 32-bit
1024 x 16-bit
256 x 24-bit
48 x 13-bit
(6144 x 12-bit / 3072 x 24-bit / 4096 x 12-bit + 1024 x 24-bit )
72kbit SRAM
8kHz to 96kHz
768fs@48kHz ( generated by PLL from 256fs or 384fs )
8kHz to 96kHz
98dBA ( fs=48 kHz Full-differential Input )
98dBA ( fs=48 kHz Full-differential Input )
91dB ( fs= 48 kHz Full-differential Input )
8kHz to 96kHz
97dBA ( fs=48 kHz )
97dBA ( fs=48 kHz )
91dB ( fs= 48 kHz )
3(maximum)
+3.3V±0.3V
-40°C~85°C
64pin LQFP (0.5mm pitch)
- 1 -
AK7746
[AK7746]
2004/12
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