LC75051E

No.A0178-7/9

Continued from preceding page.

Pin Name

Input/Output

Function

Pin No.

INTB

I

Interrupt input (low active)

68

MCUIFSEL

I

Microcontroller interface select input (CCB: low, I

69

CE

I

Microcontroller interface chip enable, fixed at high when I

70

SCL/CL

I

Microcontroller interface clock input

71

I2CBUSY/DI

I/O

Microcontroller interface data input/I

72

SDA/DO

I/O

Microcontroller interface data input/output

73

EMPF

O

CCB input register status monitor flag

78

GPFLAG

O

DSP-to-MCU general-purpose flag (high active)

77

MRREQ

O

DSP-to-MCU communication error flag

76

XPDESC

I

DSP power down reset signal (low active)

62

PDEN

O

DSP power down signal (high active)

63

XSEL0

I/O

Crystal frequency select signal 0

42

XSEL1

I/O

Crystal frequency select signal 1

43

XSEL2

I/O

Crystal frequency select signal 2

44

TEST7

I

Test pin

54

TEST0, TEST1, TEST2,

TEST3, TEST4, TEST5

I

Test pin

17, 18, 7, 8, 19, 20

TEST6

I/O

Test pin

41

XIN

Crystal oscillator input

13

XOUT

Crystal oscillator output

12

XVDD

Power supply for crystal oscillator

14

XVSS

GND for crystal oscillator

11

VREF1

AO

Reference voltage output pin 1 (ADC)

36

VREF2

AO

Reference voltage output pin 2 (DAC, EVR)

35

AVDD1

ADC analog power supply (+5V)

40

AVSS1

ADC analog GND

39

AVDD2

VREF VDD (+5V)

34

AVSS2

VREF GND

33

AVDD3

EVR analog VDD (+5V)

25

AVSS3

EVR analog GND

26

AVDD4

DAC analog VDD (+5V)

24

AVSS4

DAC analog GND

23

BVDD1

Analog chip logic power supply (+3.3V)

22

BVSS1

Analog chip logic GND

21

CVDD1, CVDD2,

CVDD3, CVDD4

Digital power supply (3.3V)

46, 61, 80, 15

CVSS1, CVSS2,

CVSS3, CVSS4

Digital GND

45, 60, 79, 16

DVDD1, DVDD2,

DVDD3, DVDD4

Digital power supply (1.8V)

52, 65, 75, 10

DVSS1, DVSS2,

DVSS3, DVSS4

Digital GND

51, 64, 74, 9

PLLPWRR

Powering for PLL (ESD) (1.8V)

1

PLLGNDR

GND for PLL (ESD)

2

PLLAVDD

Power supply for PLL (1.8V)

3

PLLAVSS

GND for PLL

4

PLLDVDD

Digital power supply for PLL (1.8V)

5

PLLDVSS

Digital GND for PLL

6