PCM4108

SBAS354 − JUNE 2005

www.ti.com

8

Terminal Functions

TERMINAL

NAME

DESCRIPTION

I/O

NO.

FMT0

33

Input

Audio Data Format Configuration

FMT1

34

Input

Audio Data Format Configuration

FMT2

35

Input

Audio Data Format Configuration

FS0

36

Input

Sampling Mode Configuration

FS1

37

Input

Sampling Mode Configuration

NC

38

−

No Internal Connection

NC

39

−

No Internal Connection

NC

40

−

No Internal Connection

NC

41

−

No Internal Connection

VREF2+

42

Input

High Reference Voltage; connect to VCC or external reference

VREF2−

43

Input

Low Reference Voltage; connect to AGND

AGND2

44

Ground

Analog Ground

VOUT8−

45

Output

Channel 8 Analog Output, Inverted

VOUT8+

46

Output

Channel 8 Analog Output, Noninverted

VOUT4−

47

Output

Channel 4 Analog Output, Inverted

VOUT4+

48

Output

Channel 4 Analog Output, Noninverted

VCOM2

49

Output

DC Common-Mode Voltage for Channels 3, 4, 7, and 8

VREF7+

50

Output

Channel 7 Analog Output, Noninverted

VREF7−

51

Output

Channel 7 Analog Output, Inverted

VREF3+

52

Output

Channel 3 Analog Output, Noninverted

VREF3−

53

Output

Channel 3 Analog Output, Inverted

VCC2

54

Power

Analog Power-Supply, +5V

VOUT3+

55

Input

High Reference Voltage; Connect to VCC or External Reference

VOUT3−

56

Input

Low Reference Voltage; Connect to AGND

VOUT4−

57

Input

Low Reference Voltage; Connect to AGND

VOUT4+

58

Input

High Reference Voltage; Connect to VCC or External Reference

VCC1

59

Power

Analog Power-Supply, +5V

VOUT6−

60

Output

Channel 6 Analog Output, Inverted

VOUT6+

61

Output

Channel 6 Analog Output, Noninverted

VOUT2−

62

Output

Channel 2 Analog Output, Inverted

VOUT2+

63

Output

Channel 2 Analog Output, Noninverted

VCOM1

64

Output

DC Common-Mode Voltage for Channels 1, 2, 5, and 6

(1) Bank A refers to Channels 1 through 4 and the control register bank used to control the functions associated with these channels, while Bank

B refers to Channels 5 through 8 and the control register bank used to control the functions associated with these channels.

(2) For register write operations, both banks may be selected and written to simultaneously. However, for register read operations, only one bank

may be selected. If both banks are selected for a read operation, the state of the CDOUT pin will be indeterminate.