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DS1878T+TR Datasheet(PDF) 10 Page - Maxim Integrated Products

Part # DS1878T+TR
Description  SFP Controller with Digital LDD Interface
Download  101 Pages
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Manufacturer  MAXIM [Maxim Integrated Products]
Direct Link  https://www.maximintegrated.com/en.html
Logo MAXIM - Maxim Integrated Products

DS1878T+TR Datasheet(HTML) 10 Page - Maxim Integrated Products

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SFP+ Controller with Digital LDD Interface
10
______________________________________________________________________________________
Pin Description
Pin Configuration
PIN
NAME
FUNCTION
1
RSELOUT
Rate-Select Output
2
SCL
I2C Serial-Clock Input
3
SDA
I2C Serial-Data Input/Output
4
TXFOUT
Transmit Fault Output, Open Drain
5
LOS
Loss of Signal Input
6
IN1
Digital Input. General-purpose
input, AS1 in SFF-8079, or RS1 in
SFF-8431.
7
TXD
Transmit Disable Input
8, 17, 21
GND
Ground Connection
9
RSEL
Rate-Select Input
10
TXDOUT
Transmit Disable Output
11
MON4
External Monitor Input 4
12, 13
MON3P,
MON3N
Differential External Monitor Input 3
and LOS Quick Trip
14
MON1
External Monitor Input 1 and
HBATH Quick Trip
15, 23
VCC
Power-Supply Input
16
MON2
External Monitor Input 2, Feedback
Voltage for APC Loop, and TXP
HI/TXP LO Quick Trip
PIN
NAME
FUNCTION
18
REFIN
Reference Input for DAC1 and
19
DAC1
Delta-Sigma Output 1
20
DAC2
Delta-Sigma Output 2
22
CSEL2OUT
Chip-Select Output 2. Part of 3-wire
interface to a laser driver/limiting
amplifier.
24
CSEL1OUT
Chip-Select Output 1. Part of 3-wire
interface to a laser driver/limiting
amplifier.
25
SCLOUT
Serial-Clock Output. Part of 3-wire
interface to a laser driver/limiting
amplifier.
26
SDAOUT
Serial-Data Input/Output. Part of
3-wire interface to a laser
driver/limiting amplifier.
27
LOSOUT
Receive Loss-of-Signal Output
28
TXF
Transmit Fault Input
—
EP
Exposed Pad. Connect to ground.
THIN QFN
(5mm
× 5mm × 0.75mm)
TOP VIEW
26
27
25
24
10
9
11
12
12
SCLOUT
45
6
7
20
21
19
17
16
15
SDAOUT
LOSOUT
MON3P
MON4
TXDOUT
RSEL
3
18
28
8
TXF
GND
CSEL1OUT
23
13
MON3N
VCC
22
14
MON1
CSEL2OUT
DS1878
EP
+


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