CXD2721Q-1 查看數據表（PDF） - Sony Semiconductor

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CXD2721Q-1

Single-Chip Digital Signal Processor for Karaoke

Sony Semiconductor 

CXD2721Q-1

Pin Description

Pin

No.

Symbol

1 XLAT

2 NC

3 NC

4 RVDT

5 NC

6 AVD0

7 AVS0

8 XRST

9 X768

10 VSS0

11 VDD1

12 VSS1

13 XWO

14 BFOT

15 BSL2

16 BSL1

17 VSS2

18 VDD1

19 AVS3

20 AIN3

21 LO3

22 AVD3

23 AVD2

24 AIN2

25 LO2

26 AVS2

27 NC

28 NC

29 AOUT2

30 AVS5

31 NC

32 AVD5

33 AO2N

34 AO2P

35 AVD6

I/O

Description

I Latch input for microcomputer interface.

Open or fixed to Low.

Open or fixed to Low.

I Data input for microcomputer interface.

Open or fixed to Low.

— Digital power supply for built-in DRAM.

— Digital GND for built-in DRAM.

I System reset input. Reset when Low.

I Test input pin. Normally fixed to Low.

— Digital GND.

— Digital power supply.

— Digital GND.

I Normally fixed to High.

O Clock, frequency divider output. (384/768/256/512fs)

I BFOT output clock frequency division ratio setting.

I BFOT output clock frequency division ratio setting.

— Digital GND.

— Digital power supply.

— CH3 AD converter GND.

I CH3 AD converter analog input. (for microphone input)

O CH3 AD converter LPF operational amplifier inverted output. (for microphone input)

— CH3 AD converter power supply.

— CH2 AD converter power supply.

I CH2 AD converter analog input.

O CH2 AD converter LPF operational amplifier inverted output.

— CH2 AD converter GND.

Open or fixed to Low.

Open or fixed to Low.

O CH2 DA converter LPF output.

— CH2 DA converter GND.

Open or fixed to Low.

— CH2 DA converter power supply.

O CH2 DA converter analog reversed phase output. (PWM)

O CH2 DA converter analog forward phase output. (PWM)

— Analog power supply for master clock.

–3–

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