CS5535-UDCF AMD (ADVANCED MICRO DEVICES), CS5535-UDCF Datasheet - Page 130

• Manufacturer Part Number: CS5535-UDCF
• Manufacturer: AMD (ADVANCED MICRO DEVICES)

Specifications of CS5535-UDCF

• Operating Temperature (min): 0C
• Operating Temperature (max): 85C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Lead Free Status / RoHS Status: Compliant

5.11.1.2 Acknowledge (ACK) Cycle
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-
26).
The master generates the ACK clock pulse on the ninth
clock pulse of the byte transfer. The transmitter releases
130
by Transmitter
Data Output
Data Output
by Receiver
SDA
SCL
31506B
SCL
START
Condition
S
START
Condition
S
MSB
1
Figure 5-27. SMB Acknowledge Cycle
Figure 5-26. SMB Data Transaction
2 3 - 6
1
Interrupt Within
Receiver
Byte Complete
2 3 - 6
7
8
7
ACK
9
8
the SDA line (permits it to go high) to allow the receiver to
send the ACK signal. The receiver must pull down the SDA
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 5-27 on page 130 illustrates the ACK
cycle.
Acknowledge
Signal From Receiver
9
1
While Interrupt
Clock Line Held
Low by Receiver
is Serviced
AMD Geode™ CS5535 Companion Device Data Book
2
3 - 8
Acknowledge
Signal From Receiver
Transmitter Stays Off Bus
During Acknowledge Clock
ACK
9
System Management Bus Controller
STOP
Condition
P