FTR-1619-47 FINISAR [Finisar Corporation.], FTR-1619-47 Datasheet - Page 7

• Manufacturer Part Number: FTR-1619-47
• Description: WDM Gigabit GBIC Transceiver with APD Receiver
• Manufacturer: FINISAR [Finisar Corporation.]

FTR-1619-XX WDM GBIC Product Specification April 2002
VIII. Serial Communication Protocol
All Finisar optical GBICs are ‘Module Definition “4”’ and support the 2 wire serial
communication protocol outlined in the GBIC Specification
Atmel AT24C01A 128 byte E
interfacing with the E
Wire Serial CMOS E
All Finisar optical GBICs also incorporate a microcontroller that monitors system
parameters such as laser current, laser temperature, and, in the case of
13xx/14xx/15xx/16xx nm parts, transmitted power. For a complete description of how to
use Finisar’s extended features, see Finisar’s Application Note AN-2030: “Digital
Diagnostic Monitoring Interface for SFP Optical Transceivers.”
CAUTION: The microcontroller implements the Philips I
details, consult the Philips I
with a slow slave device, and it requires that the host monitor the clock line every time it releases the line
high. If a host does not implement clock stretching (drives the bus blind), it must run the clock below
8kHz, so that Finisar’s microcontroller has time to process instructions. If clock stretching is supported, the
clock may be run at up to 100kHz.
© Finisar Corporation Apr-02 – Rev.J
I
Parameter
Atmel I
Finisar Microcontroller
I
Finisar Microcontroller
I
2
2
2
C Clock Rate
C Clock Rate
C Timing Requirements
2
C Clock Rate
2
2
PROM.”
PROM, see the Atmel data sheet titled “AT24C01A/02/04/08/16 2-
Symbol
2
C
C-Bus Specification. Clock stretching allows a fast master to communicate
C
C
atmel
1
2
2
5
PROM (with an address of 1010000X). For details on
Table 9. I
Min
10
10
0
Typ
2
C timing requirements
100,000
100,000
Max
8000
2
C protocol including clock stretching. For
Units Notes/Conditions
Hz
Hz
Hz
Bus can be driven blind.
Host must support clock stretching.
Microcontroller times out if C <
10Hz.
Bus can be driven blind.
Microcontroller times out if C <
10Hz.
1
. These GBICs use an
4
F i n i s a r
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