Datasheet > AFCT-5765ALZ

AFCT-5765ALZ

更新时间： 2022-02-26 09:15:23

品牌	Logo	应用领域
安华高科 - AVAGO		/
页数	文件大小	规格书
20页	248K
描述
Families of Small Form Factor Pluggable (SFP) Optical Transceivers

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AFCT-5765ALZ 数据手册

Transmitter Section

TX_FAULT

The transmitter section includes a 1310 nm Fabry-Perot A laser fault or a low V condition will activate the trans-

laser and a transmitter driver circuit. The driver circuit mitter fault signal, TX_FAULT, and disable the laser. This

maintains a constant optical power level provided that signal is an open collector output (pull-up required on

the data pattern is valid for NRZ code. Connection to the the host board); A low signal indicates normal laser op-

transmitter is provided via a LC optical connector.

eration and a high signal indicates a fault. The TX_FAULT

will be latched high when a laser fault occurs and is

cleared by toggling the TX_DISABLE input or power

cycling the transceiver. The TX_FAULT is not latched for

The transmitter has full IEC 825 and CDRH Class 1 eye

safety.

Low V . The transmitter fault condition can also be

TX_DISABLE

monitored via the two-wire serial interface (address A2,

byte 110, bit 2). By default, TX_FAULT is set to trigger on

hardware faults only.

The transmitter output can be disabled by asserting pin

3, TX_DISABLE. A high signal asserts this function while

a low signal allows normal laser operation. The transmit-

ter output can also be disabled and monitored via the

2-wire serial interface. In the event of a transceiver fault,

such as the activation of the eye safety circuit, toggling

of the TX_DISABLE will reset the transmitter, as depicted

in Figure 2.

1 µH

3.3 V

10 µF

0.1 µF

3.3 V

SFP MODULE

4.7 K to 10 KΩ

0.1 µF

4.7 K to 10 KΩ

Tx_DISABLE

Tx_FAULT

VREFR

0.01 µF

TD+

50 Ω

VREFR

SO+

SO–

LASER DRIVER

100 Ω

TX[0:9]

& SAFETY

TD–

TX GND

CIRCUITRY

TBC

EWRAP

4.7 K to 10 KΩ

50 Ω

0.1

µF

PROTOCOL

10 µF

50 Ω

RX[0:9]

0.01 µF

RD+

SI+

RBC

Rx_RATE

RBC

Rx_RATE

AMPLIFICATION

QUANTIZATION

100

SI–

RD–

50 Ω

REFCLK

Rx_LOS

RX GND

Rx_LOS

50 Ω

MOD_DEF2

MOD_DEF1

MOD_DEF0

GPIO(X)

GP14

EEPROM

REFCLK

4.7 K to 4.7 K to

10 KΩ 10 KΩ

4.7 K to

10 KΩ

3.3 V

Figure 2. Typical Application Conﬁguration

1 234 5 6 7...20

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