SM5901AF

Pin number

Pine name

I/O

Function

Setting

HL

1

VDD2

-

VDD supply pin

2

UC1

Ip/O

Microcontroller interface extension I/O 1

3

UC2

Ip/O

Microcontroller interface extension I/O 2

4

UC3

Ip/O

Microcontroller interface extension I/O 3

5

UC4

Ip/O

Microcontroller interface extension I/O 4

6

VSS2

-

Ground

7

NTEST1

Ip

Test pin

Test

8

NTEST2

Ip

Test pin

Test

9

CLK

I

16.9344 MHz clock input

10

VSS1

-

Ground

11

YSRDATA

I

Audio serial input data

12

YLRCK

I

Audio serial input LR clock

Left channel

Right channel

13

YSCK

I

Audio serial input bit clock

14

ZSCK

O

Audio serial output bit clock

15

ZLRCK

O

Audio serial output LR clock

Left channel

Right channel

16

ZSRDATA

O

Audio serial output data

17

YFLAG

I

Signal processor IC RAM overflow flag

Overflow

18

YFCLK

I

Crystal-controlled frame clock

19

YBLKCK

I

Subcode block clock signal

20

NRESET

I

System reset pin

Reset

21

ZSENSE

O

Microcontroller interface status output

22

VDD1

-

VDD supply pin

23

YDMUTE

I

Forced mute pin

Mute

24

YMLD

I

Microcontroller interface latch clock

25

YMDATA

I

Microcontroller interface serial data

26

YMCLK

I

Microcontroller interface shift clock

27

NTEST4

Ip

Test pin

Test

28

NCAS2

O

DRAM CAS control

29

D2

I/O

DRAM data input/output 2

30

D3

I/O

DRAM data input/output 3

31

D0

I/O

DRAM data input/output 0

32

D1

I/O

DRAM data input/output 1

33

NWE

O

DRAM WE control

34

NRAS

O

DRAM RAS control

35

NTEST4

Ip

Test pin

Test

36

A8

O

DRAM address 8

37

A7

O

DRAM address 7

38

A6

O

DRAM address 6

39

A5

O

DRAM address 5

40

A4

O

DRAM address 4

41

A0

O

DRAM address 0

42

A1

O

DRAM address 1

43

A2

O

DRAM address 2

44

A3

O

DRAM address 3

Ip : Input pin with pull-up resistor

Ip/O : Input/Output pin (With pull-up resistor when a input mode)

And in case that only internal 1M DRAM is used, 28, 33, 34, 36 to 44 pin are high impedance, and 29 to 32 pin are input pull up mode.

Pin description