DS1864T+ Maxim Integrated Products, DS1864T+ Datasheet - Page 71
![IC LASER CTRLR 1CHAN 5.5V 28TQFN](/photos/6/61/66150/28-tqfn_21-0139h_sml.jpg)
DS1864T+
Manufacturer Part Number
DS1864T+
Description
IC LASER CTRLR 1CHAN 5.5V 28TQFN
Manufacturer
Maxim Integrated Products
Type
Laser Diode Controller (Fiber Optic)r
Datasheet
1.DS1864TTR.pdf
(72 pages)
Specifications of DS1864T+
Number Of Channels
1
Voltage - Supply
2.97 V ~ 5.5 V
Current - Supply
3mA
Operating Temperature
-40°C ~ 95°C
Package / Case
28-WFQFN Exposed Pad
Mounting Type
Surface Mount
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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Figure 20. I
COMMUNICATIONS KEY
WRITE UP TO A 8-BYTE PAGE WITH A SINGLE TRANSACTION I
WRITE A SINGLE BYTE TO 2-WIRE ADDRESS A0h
READ A SINGLE BYTE WITH A DUMMY WRITE CYCLE TO SET THE ADDRESS COUNTER FROM I
READ MULTIPLE BYTES WITH A DUMMY WRITE CYCLE TO SET THE ADDRESS COUNTER FROM I
SR
S
S
S
P
S
S
1 0 1
1 0 1
1 0 1
1 0 1
START
STOP
REPEATED
START
2
C Communications Examples
0
0
0
0
A
N
0
0
0
0
DATA
0
0
0
X X X X X X X X
0
NOT
ACK
ACK
0 0
1 0
0 0
1 0
A
A
A
A
A
SHADED BOXES INDICATE THE SLAVE IS
CONTROLLING SDA
WHITE BOXES INDICATE THE MASTER IS
CONTROLLING SDA
MEMORY ADDRESS
MEMORY ADDRESS
MEMORY ADDRESS
MEMORY ADDRESS
____________________________________________________________________
2
8-BITS ADDRESS OR DATA
C ADDRESS A2h
DATA
A
A
A
A
SFP Laser Controller and
SR
SR
1 0 1
1 0 1
2
C ADDRESS A0h
2
C ADDRESS A2h
DATA
DATA
A
0
0
0
0
0
0
DATA
0 1
1 1
NOTE:
ALL BYTES ARE SENT MOST SIGNIFICANT BIT FIRST.
THE FIRST BYTE SENT AFTER A START CONDITION IS
ALWAYS THE SLAVE ADDRESS FOLLOWED BY THE
READ/WRITE BIT.
A
A
P
A
A
Diagnostic IC
N
DATA
DATA
P
DATA
N
A
A
P
P
71
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