Philips UDA1325 ユーザーズマニュアル

1999 May 10

7

Philips Semiconductors

Preliminary specification

Universal Serial Bus (USB) CODEC

UDA1325

V

DDA1

38

29

−

analog supply voltage 1

V

SSA1

39

30

−

analog ground 1

V

ref(DA)

40

31

O

reference voltage output DAC

V

ref(AD)

41

32

O

reference voltage output ADC

V

DDA2

42

33

−

analog supply voltage 2

VINL

43

34

I

input signal left channel PGA

V

SSA2

44

35

−

analog ground 2

n.c.

45

−

−

not connected

n.c.

46

−

−

not connected

VINR

47

36

I

input signal right channel PGA

EA

48

−

−

external access (active LOW)

VRN

49

37

I

negative reference input voltage ADC

ALE

50

−

−

address latch enable (active HIGH)

VRP

51

38

I

positive reference input voltage ADC

V

DDA3

52

39

−

supply voltage for crystal oscillator and analog PLL

XTAL2a

53

40

O

crystal output (analog; ADC)

XTAL1a

54

41

I

crystal input (analog; ADC)

V

SSA3

55

42

−

crystal oscillator and analog PLL ground

P0.0

56

−

I/O

Port 0.0 of the microcontroller

DA

57

1

I

data Input (digital)

P0.1

58

−

I/O

Port 0.1 of the microcontroller

WS

59

2

I

word select Input (digital)

P0.2

60

−

I/O

Port 0.2 of the microcontroller

BCK

61

3

I

bit clock Input (digital)

P0.3

62

−

I/O

Port 0.3 of the microcontroller

GP2/DO

63

4

I/O

general purpose pin 2 or data output

P0.4

64

−

I/O

Port 0.4 of the microcontroller