PCM2704,PCM2705

PCM2706,PCM2707

SLES081A − JUNE 2003 – REVISED MAY 2004

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28

TYPICAL CIRCUIT CONNECTION 2 (EXAMPLE OF REMOTE HEADPHONE)

Figure 32 illustrates a typical circuit connection for a bus-powered, 100-mA headphone with seven HIDs.

VOLUME+

External ROM

(Optional)

SDA

VBUS

D+

GND

SCL

USB ’B’

Connector

D–

C8

R1

SUSPEND

R7

R8

Headphone

31

30

29

28

27

32

26

PGND

VCCP

HOST

FUNC3

FUNC0

HID0/MS

HID1/MC

HID2/MD

PCM2706PJT

25

23

22

21

20

19

24

18

17

10

11

12

13

14

915

16

2

3

4

5

6

1

7

8

VBUS

D+

D–

VDD

DGND

FUNC1

FUNC2

DOUT

C5

+

C6

C3

C4

X1

C1

C2

R11

+

C9

+

C10

R9

R10

C11

R5

C12

R6

C7

R2

R3

R4

PLAY/PAUSE

NEXT TRACK

MUTE

VOLUME–

PREVIOUS TRACK

STOP

Notes:

X1: 12-MHz crystal resonator

C1, C2: 10-pF to 33-pF (depending on load capacitance of crystal

resonator)

C3, C4, C5, C7, C8: 1-µF ceramic

C6: 47-µF electrolytic

C9, C10: 100-µF electrolytic (depending on required frequency

response)

C11, C12: 0.022-µF ceramic

R1: 1 MW

R2, R11: 1.5 kW

R3, R4: 22 W

R5, R6: 16 W

R7, R8, R9, R10: 3.3 kW

External ROM power can be supplied from VCCP, but any other active

component must not use VCCP, VCCL,VCCR,orVDD as a power source.

Figure 32. Bus-Powered Application

Note that the circuit illustrated above is for information only. Whole board design should be considered to meet the

USB specification as a USB-compliant product.