ISP1520BDGA ST-Ericsson Inc, ISP1520BDGA Datasheet - Page 39

• Manufacturer Part Number: ISP1520BDGA
• Description: IC USB HUB CONTROLLER HS 64-LQFP
• Manufacturer: ST-Ericsson Inc

Specifications of ISP1520BDGA

• Applications: USB Hub/Microcontroller
• Interface: I²C
• Package / Case: 64-LQFP
• Mounting Type: Surface Mount
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Supply: -
• Other names: 568-1169; ISP1520BD,551; ISP1520BD-S

Philips Semiconductors
ISP1520_4
Product data sheet
Fig 12. Receiver differential data jitter
Fig 14. Hub differential data delay and SOP distortion
differential
data lines
T
t
Full-speed timing symbols have a subscript prefix ‘F’, low-speed timing a prefix ‘L’.
JR
PERIOD
+3.3 V
+3.3 V
+3.3 V
SOP distortion:
t
is the jitter reference point.
downstream
SOP
0 V
differential
differential
data lines
data lines
upstream
0 V
0 V
= t
is the bit duration corresponding to the USB data rate.
HDD (next J)
T
PERIOD
(A) downstream hub delay
Fig 13. Receiver SE0 width tolerance
− t
HDD(SOP)
crossover
downstream
hub delay
point
t
HDD
t
JR
N × T
consecutive
transitions
PERIOD
+ t
Rev. 04 — 28 April 2006
JR1
crossover
differential
data lines
N × T
point
+3.3 V
transitions
0 V
PERIOD
paired
+ t
downstream
differential
differential
JR2
upstream
data
data
t
JR1
(B) upstream hub delay
crossover
hub delay
t
upstream
point
FST
t
HDD
V
IH(min)
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Hi-Speed USB hub controller
mgr872
t
JR2
ISP1520
crossover
mgr777
point
mgr871
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