VN16218L2 Ver la hoja de datos (PDF) - Vaishali Semiconductor

Número de pieza

componentes Descripción

Fabricante

VN16218L2

2.5 Gigabit SERDES Transceiver

Vaishali Semiconductor  

VN16218

Advance Information

Table 1. Pin Description

Name

VDDT

VSS

VDD

VDDA

TX[0:19]

Pin #

1, 73

Type

P

7, 30, 41, P

60

13, 31, 46, P

53

21, 66, 69, P

71

2, 4, 6

I-TTL

9,11, 14

16, 18, 20

23, 3, 5

8,10,12

15, 17, 19

22, 24

3.3V power supply

Digital Ground. 0V

Description

Digital Power Supply. Connect to 1.8V

Analog Power Supply. Connect to 1.8V

Transmit Data Bus (bits 0 through 19). 20 bit transmit character.

Parallel data on this bus is clocked in on the rising edge of TBC.

The data bit corresponding to T0 is transmitted first

VSSA

NC

VSST

TBC/REF

25, 61, 70, P

72

26, 29, 79

27, 40

P

28

I-TTL

TEST1

32

EQEN

33

EN_CD

34

RX-F

35

EWR

36

I-TTL

I-TTL

I-TTL

O

I-TTL

COM_DET 37

O-TTL

RBC, RBCN 38, 39

O-TTL

Analog Ground. 0V

No Connection

TTL ground

Transmit Byte Clock / Reference Clock . A 125 MHz clock supplied

by the host system. The transmitter section accepts this signal as

the frequency reference clock. It is multiplied by 20 to generate the

serial bit clock and other internal clocks. The transmit side also

uses this clock as the transmit byte clock for the incoming parallel

data TX0 …. TX19. It also serves as the reference clock for the

receive portion of the transceiver

Test pin. For Vaishali use only. User should connect to VDD

Equalizer enable

Enables comma detect

Receiver filter pin. For Vaishali use only.

Enable Internal WRAP mode. This pin is LOW in normal operation.

When enabled High, an internal loop-back path from the transmitter

to the receiver is enabled, TX+ is HIGH and TX- is LOW

Comma Detect. This output goes HIGH to signify that R0:6 contains

a comma character (0011111). COM_DET can be sampled on the

rising edge of TBC

Recovered Byte Clock. Recovered clock and its complement

derived from the RX± data rate divided by 20. The rising edge of

RBC corresponds to a new word on RX[0:19]

2001-11-09

Page 3

MDSN-0003-00

www.vaishali.com

Vaishali Semiconductor 747 Camden Avenue, Suite C Campbell CA 95008 Ph. 408.377.6060 Fax 408.377.6063

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