|
ICS1531 Datasheet, PDF (64/76 Pages) Integrated Circuit Systems – Triple 8-bit MSPS A/D Converters with Line-Locked Clock Generator | |||
|
◁ |
ICS1531 Data Sheet - Preliminary
Chapter 10 Timing Diagrams
10.1.2 Transfer of Data Bytes
Table 10-1 lists significant time periods for signals on SDA and SCL pins during the transfer of data bytes.
Table 10-1. ICS1531 Byte Transfer
Time Period
Parameter
t1
Data Held Valid
t2
Change of Data Allowed
Conditions
â
â
Min.
2.5
2.5
Typ.
â
â
Max.
10
10
Units
µs
µs
Figure 10-2 shows how bits are transferred on an industry-standard 2-wire serial bus.
⢠For start and stop conditions, see Section 10.1.1, âStart and Stop Conditionsâ.
⢠When there is a transfer of valid data (t1), the bits that transfer are Bits 7 through 0.
â These first 8 bits are either data or address bits that are output sequentially.
â Bit 7, the most-significant bit of these 8 bits, is output first.
â Bit 0, the least-significant bit of these 8 bits, is output last.
⢠After each bit transfer, a change of data occurs (t2).
⢠For details on the ACK signal, see Chapter 10.1.3, âAcknowledge Conditionsâ.
Figure 10-2. Byte Transfer on Industry-Standard 2-Wire Serial Bus
t1
t2
Clock from
Master Device
Data Signal
Bit 7 Bit 6
(MSB)
Bit 1 Bit 0 ACK
(LSB)
ICS1531 Rev N 12/1/99
Copyright © 1999, Integrated Circuit Systems, Inc.
All rights reserved.
64
December, 1999
|
▷ |