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DSP-1
(Digital Interpolation Filter and data in-phase processor)

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Devices Characteristics:
Two-channel Digital Interpolation Filter and data in-phase processor for digital audio.
208-pin PQFP package, Manufactured on 300-mm wafers using, 90-nm low-k dielectric process. Devices offer advanced features for high-performance digital signal processing (DSP) applications with up to 250-MHz.
Data and Master-clock in-phase processing just without jitters.

Filter Configuration:
Core power supply voltage: 1.2V.
I/O power supply voltage: 3.3V.
Programmable Functions: hardware control mode.
Two-channel 1-times / 2-times / 4-times / 8-times oversampling , supports Bypass mode (NOS mode.).
Three-stage linear-phase ( group delay distortion : Zero)  FIR filter configuration.

Filter Characteristics:
Stopband Attenuation:
¡V50dB / -90DB / -130DB.
Passband: 0¡ã0.4535Fs.
Passband Ripple: within ¡Ó0.00001dB.

 Input/Output:
Input Data Formats: I2S
Input Word Length: 16, 20, or 24 Bits
Output Word Length: 16, 20, or 24 Bits
Output Data Formats: MSB-First, Binary Two
¡¦s Complement
Sampling Frequency: 32kHz to 96kHz( In DAC Reference One/Two , because they Applied DIR9001 receiver chip, so only
Supports 24 Bits, 32-96K)
Supports 24 Bits, 96 kHz Sample Rate
 
Master-Clock:
Clock Autodivide Circuit Supports four Master-Clock Frequencies : 256Fs¡B384Fs¡B512Fs¡B768Fs
Built-in two groups high performance PLL , supports low jitter Master-Clock output.

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     Transition Characteristics¡]-50dB¡^



     Passband Characteristics¡]-50dB¡^

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    Transition Characteristics¡]-90dB¡^

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Passband Characteristics¡]-90dB¡^
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Transition Characteristics¡]-130dB¡^

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Passband Characteristics¡]-130dB¡^

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DSP-1 Jumpers setting:
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Jumpers Number

Setting

Functions describing

Jumper1  PLLEN

Active (OFF)

Bypass (ON)

PLL setting

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Stopband Attenuation

-130DB

-90DB

-50DB

Digital filter Stopband Attenuation

Jumper2 ATT1

(OFF)

(OFF)

 ( ON)

 (ON)

Jumper3 ATT0

(OFF)

 (ON)

(OFF)

 (ON)

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Oversampling

8X

4X

2X

NOS

Oversampling setting

Jumper4 IPS0

(OFF)

 OFF)

 (ON)

 (ON)

Jumper5 IPS1

(OFF)

 (ON)

(OFF)

 (ON)

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Jumper6 DITH

Active (OFF)

Inactive(ON)

Data Dithering

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Jumper7 DT

Bypass mode

Oversampling mode

Digital filter setting

DSP1 Bypass (OFF)

DSP1 Active (ON)

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Jumper8 CLKS0

Can't change the setting

For other DACs design and setting

Jumper9 CLKS1

Jumper10 OWS1

Jumper11 OWS0


Note:     ON mean the jumper push on. (On the old DSP-1 is DIP switch, ON mean put the DIP switch to ON side)
              OFF mean the jumper pull off.(On  the old DSP-1 is DIP switch, ON mean put the DIP switch to OFF side)


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