參數(shù)資料
型號： AK2573AVB
廠商： Asahi Kasei Microsystems Co.,Ltd
英文描述： 125M / 156M Laser Diode Driver + APC
中文描述： 1.25億/ 1.56 apc的激光二極管驅(qū)動器
文件頁數(shù)： 29/38頁
文件大小： 286K
代理商： AK2573AVB
ASAHI KASEI [AK2573A]
<MS0189-E-01>
-29-
2004/5
8.2 Read/Write Operation
8.2.1 Byte Write
1 0 1 0
Device
Address-1
Device
Address-2
0
R/
W
0
A
C
K
Address
(MSB First)
0
A
C
K
Data
(MSB First)
0
A
C
K
S
T
A
R
T
S
T
O
P
SDA
8.2.2 Page Write
AK2573A is capable of 16-byte page write.
0
SDA
A
C
K
S
T
O
P
Data (Address)
0
. . . .
0
A
C
K
A
C
K
Data (Address + n)
1 0 1 0
Device
Address-1
Device
Address-2
0
R/
W
0
A
C
K
Address
(MSB First)
0
A
C
K
S
T
A
R
T
0
A
C
K
Data (Address + 1)
8.2.3 Current Address Read
The internal address counter maintains the last address accessed during the last read or write operation, incremented
by one. The roll over address is changed WP setting. Refer to Table 7-2 in detail.
1 0 1 0
Device
Address-1
Device
Address-2
1
R/
W
0
A
C
K
Data
(MSB First)
1
N
O
A
C
K
S
T
A
R
T
S
T
O
P
SDA
8.2.4 Random Read
A random read requires a “dummy” byte write sequence to specified “Address”. After receive the ACK from AK2573A,
perform “current address read” (see 8.2.2).
1 0 1 0
Device
Address-1
Device
Address-2
0
R/
W
0
A
C
K
Address
(MSB First)
0
A
C
K
A
C
K
S
T
A
R
T
SDA
S
T
O
P
Data
(MSB First)
*1
1 0 1 0
Device
Address-1
Device
Address-2
1
R/
W
0
S
T
A
R
T
N
O
A
C
K
1
Dummy Write
*1: Don't care when WP="H"
8.2.5 Sequential Read
Sequential read can be initiated as ether “Current Address Read” or “Random Read”. After issuing either of them, the
AK2573A continues to output data for each ACK received.
Device
Address-2
1
R/
W
0
A
C
K
Data-1
(MSB First)
0
A
C
K
SDA
A
C
K
S
T
O
P
0
Data-2
0
. . . .
1
A
C
K
N
O
A
C
K
Data-n
. . . .
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