參數(shù)資料
型號(hào)： AK2574VB
廠商： Asahi Kasei Microsystems Co.,Ltd
英文描述： 156M Laser Diode Driver + APC for Burst Mode
中文描述： 1.56激光二極管驅(qū)動(dòng)器apc的突發(fā)模式
文件頁(yè)數(shù)： 23/30頁(yè)
文件大?。?/td> 248K
代理商： AK2574VB
ASAHI KASEI
[AK2574]
<MS0266-E-00>
-23-
2003/12
5.2 Read/Write Operation
5.2.1
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
5.2.2
AK2574 is capable of 16-byte page write.
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)
5.2.3
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 5-2 in detail.
Current Address Read
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
5.2.4
A random read requires a “dummy” byte write sequence to specified “Address”. After receive the ACK from AK2574,
perform “current address read” (see 5.2.2).
Random Read
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"
5.2.5
Sequential read can be initiated as ether “Current Address Read” or “Random Read”. After issuing either of them, the
AK2574 continues tooutput data for each ACK received.
. . . .
Sequential Read
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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