SM5819AF

SEIKO NPC CORPORATION —12

Data Output Selection

PCM output selection

The PCM output and decimation filter processing is set by SEL4FS, SEL1FS and SELEXT, as shown in the

following table.

I

The external data setting (SELEXT) has priority over the 4fs/2fs/fs selection setting (SEL1FS, SEL4FS).

I

Also, the fs setting (SEL1FS) has priority over the 4fs/2fs setting (SEL4FS).

Clock Input/Output Selection and Resynchronization Operation

DSD clock input/output switching

The DSD input bit clock (DSBCK) can be switched between input and output by DIRDSCK.

PCM clock input/output switching

The PCM output word clock (PLRCK) and bit clock (PBCK) can be switched between input and output by

DIRPCK.

However, when external data is selected using SELEXT, the clocks PLRCK and PBCK are switched to outputs,

regardless of the DIRPCK setting, thus care must be exercised with external connections.

Setting

PCM output system

Clock

output

Filter

processing

SEL1FS

SEL4FS

SELEXT

POFLR

POSLR

POCSW

PLRCK

PBCK

MCKOUT

LHL

DSIFL

DSIFR

DSISL

DSISR

DSICT

DSISW

4fs

MCK

4fs

480th-order

LLL

DSIFL

DSIFR

DSISL

DSISR

DSICT

DSISW

2fs

MCK

2fs

480th-order

H

L or H

L

DSIFL

DSIFR

DSISL

DSISR

DSICT

DSISW

fs

MCK

fs

480th-order

L or H

L or H

H

EXIFLR

EXISLR

EXICSW

EXILRCK

EXIBCK

EXIMCK

Invalid

Setting

I/O state

DIRDSCK

DSBCK

L

Input (Slave)

H

Output (Master)

Setting

I/O state

DIRPCK

PLRCK

PBCK

L

Output (Master)

H

Input (Slave)