isp1122 NXP Semiconductors, isp1122 Datasheet - Page 38

• Manufacturer Part Number: isp1122
• Description: Isp1122 Universal Serial Bus Stand-alone Hub
• Manufacturer: NXP Semiconductors

16. Test information
Philips Semiconductors
9397 750 07002
Product specification
Fig 21. I
handbook, full pagewidth
SDA
SCL
2
C-bus timing.
P
t BUF
t HD;STA
S
The dynamic characteristics of the analog I/O ports (D and D
and
Fig 22. Load impedance for D+ and D- pins.
t LOW
Table
Load capacitance:
Speed selection:
C
C
full-speed mode (FS): 1.5 k pull-up resistor on D
low-speed mode (LS): 1.5 k pull-up resistor on D .
L
L
= 50 pF (full-speed mode)
= 200 pF or 600 pF (low-speed mode, minimum or maximum timing).
33, were determined using the circuit shown in
t HD;STA
t r
handbook, halfpage
Rev. 03 — 29 March 2000
D.U.T.
t HIGH
t f
20
t SU;DAT
test point
15 k
t SU;STA
C L
S
S1
t HD;STA
D /LS
D /LS
D /FS
D /FS
R PU
1.5 k
test
V reg(3.3)
Figure
MGR775
closed
closed
open
open
S1
USB stand-alone hub
as listed in
22.
© Philips Electronics N.V. 2000. All rights reserved.
ISP1122
t SU;STO
MGR779
P
Table 32
38 of 48