[AKD4371-B]

<KM086201>

2007/07

- 6 -

(3) External Slave Mode

The AK4371’s register should be set to EXT Slave Mode. MCKI frequency should be set to the same as the

specification of DSP or DIR. About the AK4371’s register definitions, refer to datasheet of the AK4371.

AK4371

DSP or

μP

MCKI

BICK

LRCK

SDATA

BCLK

LRCK

SDTO

MCKO

1fs

32fs

~ 64fs

MCLK

256fs, 384fs, 512fs,

768fs or 1024fs

Figure 5. External Slave Mode

(3-1) Evaluation using DIR (Optical Link) of AK4116 <default>

PORT1 (DIR) is used. Nothing should be connected to PORT2(DSP).

Set up the jumper pins.

(3-2) Evaluation connecting AKD4371 with external DSP

PORT2 (DSP) is used. Nothing should be connected to PORT1(DIR).

Set up the jumper pins.

JP4

BICK2

JP3

LRCK2

JP6

BICK

JP7

LRCK

MCLK

JP5

SDTO

JP8

JP4

BICK2

JP3

LRCK2

JP6

BICK

JP7

LRCK

MCLK

JP5

SDTO

JP8