MAX3799 Maxim Integrated Products, MAX3799 Datasheet - Page 22

• Manufacturer Part Number: MAX3799
• Description: SFP+ Multirate Limiting Amplifier And VCSEL Driver
• Manufacturer: Maxim Integrated Products

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1Gbps to 14Gbps, SFP+ Multirate Limiting
Amplifier and VCSEL Driver
Bit 1: RATE_SEL. RATE_SEL combined with the RSEL pin through a logic-OR function selects between the low
data-rate mode (1.25Gbps) or high data-rate mode (up to 10.32Gbps).
Bit 6: LOS_EN. Controls the LOS circuitry. When RX_EN is set to 0, the LOS detector is also disabled.
Bit 5: LOS_POL. Controls the output polarity of the LOS pin.
Bit 4: RX_POL. Controls the polarity of the receiver signal path.
Bit 3: SQ_EN: When SQ_EN = 1, the LOS controls the output circuitry.
Bit 2: RX_EN. Enables or disables the receive circuitry.
Bit 1: RXDE_EN. Enables or disables the deemphasis on the receiver output.
Bit 0: AZ_EN. Enables or disables the autozero circuitry. When RX_EN is set to 0, the autozero circuitry is also disabled.
Bit #
Name
Default Value
Bit #
Name
Default Value
22
Logic-OR output 0 = 1Gbps mode
Logic-OR output 1 = 10Gbps mode
0 = disabled
1 = enabled
0 = inverse
1 = normal
0 = inverse
1 = normal
0 = disabled
1 = enabled
0 = disabled
1 = enabled
0 = disabled
1 = enabled
0 = disabled
1 = enabled
______________________________________________________________________________________
X
X
X
X
7
7
LOS_EN
6
1
6
X
X
LOS_POL
5
1
5
X
X
RX_POL
4
1
4
X
X
SQ_EN
3
0
3
X
X
RX_EN
Receiver Control Register 1 (RXCTRL1)
Receiver Control Register 2 (RXCTRL2)
2
1
2
X
X
RATE_SEL
RXDE_EN
1
0
1
0
Register Descriptions
AZ_EN
0
1
0
X
X
ADDRESS
ADDRESS
H0x01
H0x00