Interface

Table 5.1 Physical Layer Electrical Requirements (2/3)

b) Transmitter Specifications

 

Units

Nom

Min

Max

Comments

 

 

 

 

 

 

ZdiffTX,

Ohm

 

85

115

 

TX Pair Differential

 

 

Impedance

 

 

 

 

 

 

 

 

 

 

 

Zs-eTX,

Ohm

 

40

 

 

TX Single-Ended

 

 

 

Impedance

 

 

 

 

 

 

 

 

 

 

 

c) Transmitted Signal Requirements

 

 

 

 

 

 

 

 

 

 

 

Units

Nom

Min

Max

Comments

 

 

 

 

 

 

 

 

 

 

 

Differential

 

 

 

 

 

nominal measured

VdiffTX,

 

 

 

 

at Serial ATA

mVppd

500

400

600

connector on

TX Differential

transmit side

Output Voltage

 

 

 

 

 

 

 

 

(+/-250mV

 

 

 

 

 

differential@seria

 

 

 

 

 

l ATA connector)

 

 

 

 

 

 

 

 

 

 

 

Rise: 20%-80% at

t20-80TX,

ps

 

0.15

0.41

transmitter

TX Rise/Fall Time

(UI)

 

(20-80%)

(20-80%)

Fall: 80%-20% at

 

 

 

 

 

transmitter

 

 

 

 

 

 

tskewTX,

ps

 

 

20

 

TX Differential Skew

 

 

 

 

 

TJ at Connector,

UI

 

 

0.355

 

Data-Data, 5UI

 

 

 

 

 

 

 

 

DJ at Connector,

UI

 

 

0.175

 

Data-Data, 5UI

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TJ at Connector,

UI

 

 

0.47

 

Data-Data, 250UI

 

 

 

 

 

 

 

 

 

 

 

 

 

 

DJ at Connector,

UI

 

 

0.22

 

Data-Data, 250UI

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5-8

C141-E249

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Fujitsu MHW2120BS, MHW2100BS, MHW2080BS, MHW2040BS, MHW2060BS manual Physical Layer Electrical Requirements 2/3