Rainbow-electronics MAX3799 Manual de usuario descargar pdf (Pagina 31)

MAX3799

1Gbps to 14Gbps, SFP+ Multirate Limiting

Amplifier and VCSEL Driver

______________________________________________________________________________________ 31

FUNCTION/

ADDRESS

NAME

NORMAL

MODE

SETUP

MODE

BIT

NUMBER

/TYPE

BIT NAME

DEFAULT

VALUE

NOTES

R RW 8 SET_IMOD[8] 0 MSB modulation DAC

R RW 7 SET_IMOD[7] 0

R RW 6 SET_IMOD[6] 0

R RW 5 SET_IMOD[5] 1

R RW 4 SET_IMOD[4] 0

R RW 3 SET_IMOD[3] 0

R RW 2 SET_IMOD[2] 1

R RW 1 SET_IMOD[1] 0

Modulation

Current Setting

Address = H0x09

SET_IMOD

Accessible through

REG_ADDR = 12

0 SET_IMOD[0] 0 LSB modulation DAC

R RW 7 IMODMAX[7] 0 MSB modulation limit

R RW 6 IMODMAX[6] 0

R RW 5 IMODMAX[5] 1

R RW 4 IMODMAX[4] 1

R RW 3 IMODMAX[3] 0

R RW 2 IMODMAX[2] 0

R RW 1 IMODMAX[1] 0

Maximum

Modulation

Current Setting

Address = H0x0A

IMODMAX

R RW 0 IMODMAX[0] 0 LSB modulation limit

R RW 7 IBIASMAX[7] 0 MSB bias limit

R RW 6 IBIASMAX[6] 0

R RW 5 IBIASMAX[5] 0

R RW 4 IBIASMAX[4] 1

R RW 3 IBIASMAX[3] 0

R RW 2 IBIASMAX[2] 0

R RW 1 IBIASMAX[1] 1

Maximum Bias

Current Setting

Address = H0x0B

IBIASMAX

R RW 0 IBIASMAX[0] 0 LSB bias limit

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

Table 7. Register Summary (continued)

1 2 ... 26 27 28 29 30 31 32 33 34 35

Amplifier and VCSEL Driver 1

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Rainbow-electronics MAX3799 Manual de usuario Pagina 31

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