Rainbow-electronics MAX3798 Manual de usuario descargar pdf (Pagina 32)

MAX3798

1.0625Gbps to 10.32Gbps, Integrated, Low-

Power SFP+ Limiting Amplifier and VCSEL Driver

32 ______________________________________________________________________________________

FUNCTION/

ADDRESS

NAME

NORMAL

MODE

SETUP

MODE

BIT

NUMBER

/TYPE

BIT NAME

DEFAULT

VALUE

NOTES

R R 7 SET_IMOD[0] 0

LSB of SET_IMOD DAC

R R 6 X 0

R R 5 DE_INC 0

Deemphasis increment

0: no update, 1: SET_TXDE

updates ±1 LSB

RW RW 4 MODINC[4] 0

MSB MOD DAC two’s

complement

RW RW 3 MODINC[3] 0

RW RW 2 MODINC[2] 0

RW RW 1 MODINC[1] 0

Modulation

Current Increment

Setting Register

Address = H0x0C

MODINC

RW RW 0 MODINC[0] 0

LSB MOD DAC two’s

complement

R R 7 SET_IBIAS[0] 0

LSB of SET_IBIAS DAC

R R 6 X 0

R R 5 X 0

RW RW 4 BIASINC[4] 0

MSB bias DAC two’s

complement

RW RW 3 BIASINC[3] 0

RW RW 2 BIASINC[2] 0

RW RW 1 BIASINC[1] 0

Bias Current

Increment Setting

Address = H0x0D

BIASINC

RW RW 0 BIASINC[0] 0

LSB bias DAC two’s

complement

RW RW 7 MODECTRL[7] 0 MSB mode control

RW RW 6 MODECTRL[6] 0

RW RW 5 MODECTRL[5] 0

RW RW 4 MODECTRL[4] 0

RW RW 3 MODECTRL[3] 0

RW RW 2 MODECTRL[2] 0

RW RW 1 MODECTRL[1] 0

Mode Control

Address = H0x0E

MODECTRL

RW RW 0 MODECTRL[0] 0 LSB mode control

R RW 3 SET_PWCTRL[3] 0 MSB Tx pulse-width control

R RW 2 SET_PWCTRL[2] 0

R RW 1 SET_PWCTRL[1] 0

Transmitter Pulse-

Width Control

Address = H0x0F

SET_

PWCTRL

R RW 0 SET_PWCTRL[0] 0 LSB Tx pulse-width control

R RW 3 SET_TXDE[3] 0 MSB Tx deemphasis

R RW 2 SET_TXDE[2] 0

R RW 1 SET_TXDE[1] 0

Transmitter

Deemphasis

Control Register

Address = H0x10

SET_TXDE

R RW 0 SET_TXDE[0] 0 LSB Tx deemphasis

Table 7. Register Summary (continued)

1 2 ... 27 28 29 30 31 32 33 34 35

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Rainbow-electronics MAX3798 Manual de usuario Pagina 32

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