SC1200UFH-266BF 33 AMD (ADVANCED MICRO DEVICES), SC1200UFH-266BF 33 Datasheet - Page 122
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SC1200UFH-266BF 33
Manufacturer Part Number
SC1200UFH-266BF 33
Description
Manufacturer
AMD (ADVANCED MICRO DEVICES)
Datasheet
1.SC1200UFH-266BF_33.pdf
(443 pages)
Specifications of SC1200UFH-266BF 33
Lead Free Status / RoHS Status
Compliant
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5.7.3
The ACK cycle consists of two signals: the ACK clock
pulse sent by the master with each byte transferred, and
the ACK signal sent by the receiving device (see Figure 5-
15).
The master generates the ACK clock pulse on the ninth
clock pulse of the byte transfer. The transmitter releases
122
Acknowledge (ACK) Cycle
by Transmitter
Data Output
Data Output
by Receiver
ABD
ABC
32579B
ABC
Start
Condition
S
Start
Condition
S
Figure 5-16. ACCESS.bus Acknowledge Cycle
MSB
Figure 5-15. ACCESS.bus Data Transaction
1
2 3 - 6
1
Interrupt Within
Receiver
Byte Complete
2 3 - 6
7
8
7
ACK
9
8
the ABD line (permits it to go high) to allow the receiver to
send the ACK signal. The receiver must pull down the ABD
line during the ACK clock pulse, signalling that it has cor-
rectly received the last data byte and is ready to receive
the next byte. Figure 5-16 illustrates the ACK cycle.
Acknowledge
Signal From Receiver
9
1
While Interrupt
Clock Line Held
Low by Receiver
is Serviced
AMD Geode™ SC1200/SC1201 Processor Data Book
2
3 - 8
Acknowledge
Signal From Receiver
Transmitter Stays Off Bus
During Acknowledge Clock
ACK
9
Stop
Condition
P
SuperI/O Module
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