m66291 Renesas Electronics Corporation., m66291 Datasheet - Page 110

• Manufacturer Part Number: m66291
• Description: Assp Usb2.0 Device Controller
• Manufacturer: Renesas Electronics Corporation.

M 6 6 2 9 1 G P / H P
4.8 Measurement circuit
4.8.1
4.8.2
R e v 1 . 0 1
P.G.
Pins except for USB buffer block
USB buffer block
2 0 0 4 . 1 1 . 0 1
be m easured
E lem ents to
50
Ω
Input
V c c
G N D
p a g e 1 1 0 o f 1 2 2
be m easured
Elem ents to
R
R
L
L
=27
=27
Vcc
Ω
Ω
G ND
V c c
R
R
L
L
= 15k
= 15k
R
D +
D -
L
=1.5K
C
Ω
Ω
C
L
L
Ω
Vcc
C
C
L
L
R
R
SW 1
SW 2
L
L
=1k
=1k
(2) T he elec tros tatic c apac ity C L inc ludes the s tray
(1) T he tr and tf are judged by the trans ition tim e of
Ω
Ω
D15-0 other output
c apac itanc e of the w ire c onnec tion and the
input c apac itanc e of the probe.
D15-0
the 10% am plitude point and 90% am plitude point
res pec tively.
tdis(CTRL(LZ))
tdis(CTRL(HZ))
ta(CT RL(ZL))
ta(CT RL(ZH))
(1) Input pulse level : 0 ~ 3.3V, 0 ~ 5.0V
(2) T he electrostatic capacity CL includes
Item
Input pulse rise/fall time : tr,tf=3ns
Input timing standard voltage : IO Vcc/2
O utput timing judge voltage : IO Vcc/2
(The tdis (LZ) is judged by 10% of the
output amplitude and the tdis (HZ) by
90% of the output amplitude.)
the stray capacitance of the wire
connection and the input capacitance
of the probe.
SW 1
close
open
close
open
close
SW 2
open
close
open