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4 switching characteristics for pci interface, 5 switching characteristics for phy-link interface – Texas Instruments TSB12LV26 User Manual

Page 87

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7–3

7.3

Electrical Characteristics Over Recommended Operating Conditions (unless
otherwise noted)

OPERATION

TEST

CONDITIONS

MIN

MAX

UNIT

PCI

IOH = – 0.5 mA

0.9 VCC

PCI

IOH = – 2 mA

2.4

VOH

High-level output voltage

PHY interface

IOH = – 4

µ

A

2.8

V

PHY interface

IOH = – 8 mA

VCC – 0.6

Miscellaneous‡

IOH = – 4 mA

VCC – 0.6

PCI

IOL = 1.5 mA

0.1 VCC

PCI

IOL = 6 mA

0

0.55

VOL†

Low-level output voltage

PHY interface

IOL = 4 mA

0.4

V

PHY interface

IOL = 8 mA

Miscellaneous‡

IOL = 4 mA

0.5

IOZ

3-state output high-impedance

Output pins

3.6 V

VO = VCC or GND

±

20

µ

A

IIL

Low level input current

Input pins

3.6 V

VI = GND‡

±

20

µ

A

IIL

Low-level input current

I/O pins†

3.6 V

VI = GND‡

±

20

µ

A

IIH

High level input current

PCI†

3.6 V

VI = VCC‡

±

20

µ

A

IIH

High-level input current

Others†

3.6 V

VI = VCC‡

±

20

µ

A

† For I/O pins, input leakage (IIL and IIH) includes IOZ of the disabled output.

‡ Miscellaneous pins are: GPIO2, GPIO3, SDA, SCL, CYCLEOUT.

7.4

Switching Characteristics for PCI Interface

§

PARAMETER

MEASURED

MIN

TYP

MAX

UNIT

tsu

Setup time before PCLK

–50% to 50%

3

ns

th

Hold time before PCLK

–50% to 50%

0

ns

td

Delay time, PHY_CLK to data valid

–50% to 50%

2

6

ns

§ These parameters are ensured by design.

7.5

Switching Characteristics for PHY-Link Interface

§

PARAMETER

MEASURED

MIN

TYP

MAX

UNIT

tsu

Setup time, Dn, CTLn, LREQ to PHY_CLK

–50% to 50%

6

ns

th

Hold time, Dn, CTLn, LREQ before PHY_CLK

–50% to 50%

1

ns

td

Delay time, PHY_CLK to Dn, CTLn

–50% to 50%

2

11

ns

§ These parameters are ensured by design.