Rainbow-electronics MAX3799 Manual do Utilizador descarregar pdf (Página 22)

MAX3799

Receiver Control Register 1 (RXCTRL1)

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).

Logic-OR output 0 = 1Gbps mode

Logic-OR output 1 = 10Gbps mode

Receiver Control Register 2 (RXCTRL2)

Bit 6: LOS_EN. Controls the LOS circuitry. When RX_EN is set to 0, the LOS detector is also disabled.

0 = disabled

1 = enabled

Bit 5: LOS_POL. Controls the output polarity of the LOS pin.

0 = inverse

1 = normal

Bit 4: RX_POL. Controls the polarity of the receiver signal path.

0 = inverse

1 = normal

Bit 3: SQ_EN. When SQ_EN = 1, the LOS controls the output circuitry.

0 = disabled

1 = enabled

Bit 2: RX_EN. Enables or disables the receive circuitry.

0 = disabled

1 = enabled

Bit 1: RXDE_EN. Enables or disables the deemphasis on the receiver output.

0 = disabled

1 = enabled

Bit 0: AZ_EN. Enables or disables the autozero circuitry. When RX_EN is set to 0, the autozero circuitry is also disabled.

0 = disabled

1 = enabled

1Gbps to 14Gbps, SFP+ Multirate Limiting

Amplifier and VCSEL Driver

22 ______________________________________________________________________________________

Bit # 7 6 5 4 3 2 1 0 ADDRESS

Name X X X X X X RATE_SEL X

Default Value X X X X X X 0 X

H0x00

Bit # 7 6 5 4 3 2 1 0 ADDRESS

Name X LOS_EN LOS_POL RX_POL SQ_EN RX_EN RXDE_EN AZ_EN

Default Value X 1 1 1 0 1 0 1

H0x01

1 2 ... 17 18 19 20 21 22 23 24 25 26 27 ... 34 35

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Rainbow-electronics MAX3799 Manual do Utilizador Página 22