Preliminary

DFBM-CM22A

10

SPK_P_R

Speaker output positive (right side)

11

SPK_N_L

Speaker output negative (left side)

12

SPK_P_L

Speaker output positive (left side)

13

GND

Ground

14

USB D-

USB data minus

15

USB D+

Input USB data plus with selectable internal 1.5kohm

pull-up resistor

16

VUSB

5V input

17

UART_RTS

UART request to send active low

18

UART_TX

UART data output

19

UART_CTS

UART clear to send active low

20

UART_RX

UART data input

21

S4

Turn off

22

S3

Volume up

23

S2

Volume down

24

S1

Turn on

25

RESET

Reset if high

26

S5

Forward

27

S6

Backward

28

VBAT

Battery voltage input

29

GND

Ground

30

1.8V

1.8V output

31

GND

Ground

Data Sheet

Apr 18, 2005

Proprietary Information and Specifications are Subject to Change