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Slot 1

Slot 2

Slot 3

Slot 4

Ch. 1

Ch. 2

Ch. 3

Ch. 4

In the case of BCK = 96f

In the case of BCK = 128f

The audio data is left justified in the time slot, with the the least significant 8 bits of each time slot being don’t care bits.

Audio data is always presented in two’s complement, MSB−first format.

LRCK

Normal, Zero BCK Delay

LRCK

Normal, One BCK Delay

LRCK

Inverted, Zero BCK Delay

LRCK

Inverted, One BCK Delay

DATA0

Supports 4 Channels, or

one PCM4104 device.

One Frame

BCK = 96f

(the SUB pin is ignored when using a Short Frame)

TDM Data Formats

− Short Frame

All Sampling Modes Supported

LRCK

BCK

(BCKE = 0)

DATA0

t

DS

t

DH

t

LRBKD

t

LRCKP

t

BNF

t

BKBF

One Frame

BCK

(BCKE = 1)

P A R A M E T E R

D E S C R IP T IO N

M IN

M A X

U N IT S

1/f

BCK

1/f

BCK

12

10

10

12

ns

ns

ns

ns

ns

ns

LRCK pulse width

LRCK active edge to BCK sampling edge delay

Data setup time

Data hold time

LRCK transition before new frame

BCK sampling edge to new frame delay

PCM4104-EP

SBAS419 – JUNE 2007

Figure 14. TDM Data Formats: Short Frame

Figure 15. TDM Timing

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