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ICS1531 Datasheet, PDF (65/76 Pages) Integrated Circuit Systems – Triple 8-bit MSPS A/D Converters with Line-Locked Clock Generator | |||
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ICS1531 Data Sheet - Preliminary
Chapter 10 Timing Diagrams
10.1.3 Acknowledge Conditions
Figure 10-3 shows in general how an acknowledge works on an industry-standard 2-wire serial bus.
⢠For start and stop conditions, see Section 10.1.1, âStart and Stop Conditionsâ.
⢠The data transfers (1). (For details, see Section 10.1.2, âTransfer of Data Bytesâ.) If there is a:
â Data read, the ICS1531 drives the data, and the master (typically, a microcontroller) drives the ACK.
â Data write, the master drives the data, and the ICS1531 drives the ACK.
⢠The acknowledge bit (ACK) is the ninth (and last) bit output.
â The ACK bit is a read-write bit that indicates whether the first 8 bits are either:
⢠Read from the ICS1531 by a master device (typically, a microcontroller), or
⢠Written to the ICS1531 by a master device
â For an acknowledge (2) to occur, you must do the following:
⢠Address the ICS1531 properly
⢠Write a valid register index
⢠Read/write the specified data
Figure 10-3. Acknowledge on Industry-Standard 2-Wire Serial Bus
Data Transfer
(1)
Acknowledge
(2)
Clock from
Master Device
Clock
Pulse 1 1
2
Acknowledge
8
9 Clock Pulse
Data Signal
Bit 7 Bit 6
(MSB)
Bit 0 ACK
(LSB)
ICS1531 Rev N 12/1/99
Copyright © 1999, Integrated Circuit Systems, Inc.
All rights reserved.
65
December, 1999
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