sfu-43-48h-hp-rde Source Photonics, Inc., sfu-43-48h-hp-rde Datasheet - Page 3

• Manufacturer Part Number: sfu-43-48h-hp-rde
• Description: Class B+ Gpon Olt Transceiver
• Manufacturer: Source Photonics, Inc.

Table 5 – Digital RSSI Timing Specification
Tx_Fail_Normal (LVTTL)
Data Output Rise and Fall Time
Single ended data output swing (LVPECL)
Signal Detect Output LOW
Signal Detect Output HIGH
Signal Detect Response Time
Notes:
1.
Parameter
RSSI Trigger Delay
RSSI Sampling Time
Internal I2C Delay
Receiver Power DDM (RSSI)
Error
.
a) RSSI_ACQ input signal rising edge will trigger RSSI sampling, and falling edge will trigger internal
b) RSSI DDM working range between -10 to -30dBm. RSSI DDM accuracy is better than +/-3dB for
20% to 80%
b
digital RSSI information written to I2C. It is recommended that host shall not trigger RSSI_ACQ
input again until RSSI data is valid in I2C from previous RSSI trigger.
input power range between -12 to -30dBm and the accuracy reduces to +/-5dB for input power
range between -10 to -12dBm. If the data pattern is at least 2^7-1 or longer, a minimum average of
8 times is strongly recommended to maintain the RSSI reading accuracy.
a
RSSI
Symbol
RX
T
Trigger
T
I2C
DDM
Sample
V
V
V
V
T
OUT, p-p
_Normal
T
_DETH
_DETL
OUT
SD
Receiver
Min
300
25
300
2.4
‐
‐
0
0
-
-
250
Typical
-
-
-
-
-
SFU-43-48H-HP-RDE
‐
‐
‐
‐
1200
Vcc
0.4
0.8
-
-
DS-6386 Rev 00 2011-1-30
+/‐ 3
Max
500
‐
‐
mV
ns
ps
V
V
V
Unit
dB
ns
ns
µs
1