M66596FP datasheet(102/131 Pages) RENESAS

102 / 131 page

M66596FP/WG

rev .1.00

2006.3.14

page 102 of 127

4.5 Measurement circuit

4.5.1

Pins except for USB buffer block

RL=1k

Ω

SW2

SW1

Elements to

be measured

P.G.

RL=1k

Ω

VDD

input

tdis(CTRL(LZ))

tdis(CTRL(HZ))

ta(CTRL(ZL))

ta(CTRL(ZH))

SW2

SW1

(1) Input pulse level : 0 ~ 3.3V, 0 ~ 1.8V

Input pulse rise/fall time : tr,tf=3ns

Input timing standard voltage : VIF/2

Output timing judge voltage : VIF/2

(The tdis (LZ) is judged by 10% of the

output amplitude and the tdis (HZ) by

90% of the output amplitude.)

(2)The electrostatic capacity CL includes

the stray capacitance of the wire

connection and the input capacitance

of the probe.

Ω

GND

D15-0,

SD7-0,

DEND0_N,

DEND1_N

other output

closed

open

item

4.5.2

USB buffer block (Full-Speed)

D+

RL=15K

Ω

D-

RL=15K

Ω

VDD

GND

Elements to

be measured

(1) The tr and tf are judged by the transition time of

the 10% amplitude point and 90% amplitude

point respectively.

(2) The electrostatic capacity CL includes the stray

capacitance of the wire connection and the

input capacitance of the probe.

(3) The resistor RL exists only

when peripheral mode.

4.5.3

USB buffer block (Hi-Speed)

D+

RL=45

Ω

D-

RL=45

Ω

VDD

GND

Elements to

be m

easured

(1) The tr and tf are judged by the transition time of

the 10% amplitude point and 90% amplitude

point respectively.

(2) The electrostatic capacity CL includes the stray

capacitance of the wire connection and the

input capacitance of the probe.

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