AM79C976KI AMD (ADVANCED MICRO DEVICES), AM79C976KI Datasheet - Page 59

• Manufacturer Part Number: AM79C976KI
• Manufacturer: AMD (ADVANCED MICRO DEVICES)

Specifications of AM79C976KI

• Operating Supply Voltage (typ): 3.3V
• Operating Supply Voltage (min): 2.97V
• Operating Supply Voltage (max): 3.63V
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 208
• Lead Free Status / RoHS Status: Not Compliant

P R E L I M I N A R Y
If a receive buffer does not end on a DWord boundary,
the Am79C976 controller will perform a non-DWord
write on the last transfer to the buffer. Figure 27 shows
CLK
the final three FIFO DMA transfers to a receive buffer.
1
2
3
4
5
6
Since there were only 9 bytes of space left in the re-
FRAME
ceive buffer, the Am79C976 controller bursts three
data phases. The first two data phases write a full
DWord, the last one only writes a single byte.
AD
ADD
DATA
DATA
DATA
0111
0001
0000
C/BE
PAR
PAR
PAR
PAR
IRDY
TRDY
DEVSEL
REQ
GNT
DEVSEL is sampled
22929B28
Figure 26. FIFO Burst Write At Start Of Unaligned
Buffer
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