7 i2c-bus and 3-wire serial bus interface, Tda8752b, Philips semiconductors – NXP Semiconductors Triple high-speed Analog-to-Digital Converter 110 Msps TDA8752B User Manual

Page 16: C-bus and 3-wire serial bus interface, The i, C-bus and 3-wire serial bus interfaces

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Philips Semiconductors

TDA8752B

Triple high-speed Analog-to-Digital Converter 110 Msps

Product specification

Rev. 03 — 21 July 2000

16 of 38

9397 750 07338

© Philips Electronics N.V. 2000. All rights reserved.

8.7 I

2

C-bus and 3-wire serial bus interface

The I

2

C-bus and 3-wire serial buses control the status of the different control DACs

and registers. Control pin DIS enables or disables the full serial interface function
(disable at HIGH level). Four ICs can be used in the same system and programmed
by the same bus. Therefore, two pins (ADD1 and ADD2) are available to set each
address respectively, for use with the I

2

C-bus interface. All programming is described

in

Section 9 “I

2

C-bus and 3-wire serial bus interfaces”

.

Slave at 180 deg phase shift with respect to pin CKADCO of the master TDA8752B.

Fig 9.

Dual TDA8752B solution for pixel clock rate with a single phase adjustment (100 to 200 MHz).

FCE466

I

2

C-bus;

1 bit (Ckb)

(Ckb = 1)

phase selector A

I

2

C-bus;

5 bits (Pa)

I

2

C-bus;

1 bit (Cka)

(Cka = 1)

CLKADC

12 to

100 MHz

PLL

Master TDA8752B

(even pixels)

0 /180

MUX

SYNCHRO

COAST

CKEXT

INV

CKADCO

CKAO

CKREFO

CKREF

phase selector B

I

2

C-bus; 5 bits (Pb)

CKBO

I

2

C-bus;

1 bit (Ckb)

(Ckb = 0)

phase selector A

I

2

C-bus;

5 bits (Pa)

I

2

C-bus;

1 bit (Cka)

(Cka = 1)

CLKADC

12 to

100 MHz

PLL

Slave TDA8752B

(odd pixels)

0 /180

MUX

SYNCHRO

COAST

CKEXT

INV

CKADCO

CKAO

CKREFO

phase selector B

I

2

C-bus; 5 bits (Pb)

CKBO

CKREF

I

2

C-bus;

1 bit (Ckab)

(Ckab = 1)

MUX

MUX

NCKBO

NCKBO

I

2

C-bus;

1 bit (Ckab)

(Ckab = 0)

MUX

MUX

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