NXP Semiconductors TDA8752B Bedienungsanleitung PDF herunterladen (Seite 23)

Philips Semiconductors

TDA8752B

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

9397 750 07338

Product speciﬁcation Rev. 03 — 21 July 2000 23 of 38

9.3 3-wire serial bus protocol

For the 3-wire serial bus the ﬁrst byte refers to the register address which is programmed. The second byte refers to the

data to be sent to the chosen register (see Tabl e 4). The acquisition is achieved via SEN.

Using the 3-wire serial bus interface, an indeﬁnite number of ICs can operate on the same system. Pin SEN is used to

validate the circuits.

Fig 10. 3-wire serial bus protocol.

FCE474

s3W

= 100 ns

h3W

= 100 ns

r3W

= 600 ns

100 ns

1199

XXXXA3A2A1A0XD7D6D5D4D3D2D1D0X

SEN

SCL

SDA

1 2 ... 18 19 20 21 22 23 24 25 26 27 28 ... 37 38

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NXP Semiconductors TDA8752B Bedienungsanleitung Seite 23