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DS1886_V1 Datasheet - Page 13

Download or read online Maxim Integrated DS1886_V1 SFP and PON ONU Controller with Digital LDD Interface pdf datasheet.



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I
C AC ELECTRICAL CHARACTERISTICS
(V
= +2.97V to +3.63V, T
= -40NC to +95NC, unless otherwise noted. Timing is referenced to V
CC
A
Figure
19.)
PARAMETER
SCL Clock Frequency
Clock Pulse-Width Low
Clock Pulse-Width High
Bus Free Time Between STOP and
START Condition
START Hold Time
START Setup Time
Data in Hold Time
Data in Setup Time
Rise Time of Both SDA and SCL
Signals
Fall Time of Both SDA and SCL
Signals
STOP Setup Time
Capacitive Load for Each Bus Line
EEPROM Write Time
NONVOLATILE MEMORY CHARACTERISTICS
(V
= +2.97V to +3.63V, unless otherwise noted.) (Note 1)
CC
PARAMETER
EEPROM Write Cycles
Note 1: Limits are production tested at T
range are guaranteed by design and characterization. Typical values are not guaranteed.
Note 2: All voltages are referenced to ground. Current entering the IC is considered positive, and current exiting the IC is consid-
ered negative.
Note 3: Inputs are at supply rail. Outputs are not loaded. Does not include REFIN current. Measured using the
Circuit—GPON
ONU.
Note 4: The ADC output is available internally as a 16-bit value. The 16 bits are derived by left-shifting the 13-bit ADC output by 3.
Note 5: Guaranteed by design.
Note 6: TXB (transmit bias) and TXP (transmit power) are separate ADC conversions that are performed on the same input pin, TXMON.
Note 7: Full scale is user-programmable.
Note 8: Time until faults are cleared (falling edge of TXFOUT).
Note 9: Time until rising edge of TXDOUT.
Note 10: Time until falling edge of TXDOUT.
Note 11: Time until completion of initial MAX3710 control registers configuration.
Note 12: Time until completion of initial MAX3945 and MAX3710 control registers configuration.
Note 13: VCC LO alarm or warning is enabled, a V
Figure
12c.
Note 14: DAC output valid, 3-wire writes from LUTs complete, and digital outputs valid.
2
Note 15: I
C interface timing shown is for fast-mode (400kHz) operation. This device is also backward compatible with I
dard mode.
Note 16: C
= Total capacitance of one bus line in pF.
B
Note 17: EEPROM write begins after a STOP condition occurs.
SFP and PON ONU Controller
with Digital LDD Interface
SYMBOL
CONDITIONS
f
(Note 15)
SCL
t
LOW
t
HIGH
t
BUF
t
HD:STA
t
SU:STA
t
HD:DAT
t
SU:DAT
t
(Note 16)
R
t
(Note 16)
F
t
SU:STO
C
B
t
(Note 17)
W
SYMBOL
CONDITIONS
At T
= +25NC
A
At T
= +85NC
A
= +25°C. Limits over the operating temperature range and relevant supply voltage
A
conversion is completed, and V
CC
DS1886
and V
.) (Note 1) (See
IL(MAX)
IH(MIN)
MIN
TYP
MAX
0
400
1.3
0.6
1.3
0.6
0.6
0
0.9
100
20 +
300
0.1C
B
20 +
300
0.1C
B
0.6
400
20
MIN
TYP
MAX
50,000
10,000
Typical Operating
is above VCC LO alarm or warning. See
CC
2
C stan-
UNITS
kHz
Fs
Fs
Fs
Fs
Fs
Fs
ns
ns
ns
Fs
pF
ms
UNITS
13

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