AWG G3 PAD FOR PS3 Spezifikationen Seite 274

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Seitenansicht 273
X24C04
Characteristics subject to change without notice.
7 of 13
REV 1.1 7/12/00
www.xicor.com
NOT RECOMMENDED
FOR NEW DESIGNS
Figure 8. Random Read
S
T
A
R
T
Slave
Address
A
C
K
A
C
K
S
S
T
A
R
T
Slave
Address
Word
Address n
S
A
C
K
Data n
S
T
O
P
P
Bus Activity:
Master
SDA Line
Bus Activity:
X24C04
Sequential Read
Sequential Read can be initiated as either a current
address read or random access read. The first word is
transmitted as with the other modes, however, the
master now responds with an acknowledge, indicating
it requires additional data. The X24C04 continues to
output data for each acknowledge received. The read
operation is terminated by the master; by not responding
with an acknowledge and by issuing a stop condition.
The data output is sequential, with the data from
address n followed by the data from n + 1. The address
counter for read operations increments all address bits,
allowing the entire memory contents to be serially read
during one operation. At the end of the address space
(address 511), the counter “rolls over” to address 0 and
the X24C04 continues to output data for each acknowl-
edge received. Refer to Figure 9 for the address,
acknowledge and data transfer sequence.
Figure 9. Sequential Read
Figure 10. Typical System Configuration
Slave
Address
S
T
O
P
A
C
K
A
C
K
A
C
K
A
C
K
Data n
Data n+1 Data n+2 Data n+x
P
Bus Activity:
Master
SDA Line
Bus Activity:
X24C04
Master
Transmitter/
Receiver
Slave
Receiver
Slave
Transmitter/
Receiver
Master
Transmitter
Master
Transmitter/
Receiver
Pull-Up
Resistors
SDA
SCL
V
CC
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