GL800USB - USB2.0 UTMI COMPLIANT TRANSCEIVER
7.3 DC Characteristics (D+/D-)
Symbol
Description
Min Typ Max Unit
VOL
VOH
VDI
VCM
VSE
CIN
ILO
ZDRV
D+/D- static output LOW (RL of 1.5K to 3.6V )
D+/D- static output HIGH (RL of 15K to GND ) 2.8
Differential input sensitivity
0.2
Differential common mode range
0.8
Single-ended receiver threshold
0.2
Transceiver capacitance
Hi-Z state data line leakage
-10
Driver output resistance
28
0.3
V
3.6
V
V
2.5
V
V
20
pF
+10 µA
43 Ohms
7.4 Switching Characteristics
Symbol
Description
Min Typ Max Unit
FX1
TCYC
TX1L
TX1H
Tr30pf
Tf30pf
Tr50pf
Tf50pf
TrUSB
TfUSB
X1 crystal frequency
11.97 12
X1 cycle time
83.3
X1 clock LOW time
X1 clock HIGH time
0.45Tcyc
0.45Tcyc
Output pad rise time from 10% to 90%
swing with 30pF loading
Output pad fall time from 10% to 90% swing
with 30pF loading
Output pad rise time from 10% to 90%
swing with 50pF loading
Output pad fall time from 10% to 90% swing
with 50pF loading
D+/D- rise time with 50pF loading
4
D+/D- fall time with 50pF loading
4
12.03
20
20
MHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
©2000-2001 Genesys Logic Inc.—All rights reserved.
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