Oki B4500 - Page 113

43502101TH Rev.1 113 /
Oki Data CONFIDENTIAL
9) Timing Chart
a) Packet Voltage Levels
b) Disconnect Detection
D+ / D-
D- / D+
Device
Connected
DisConnect
Detected
≥ 2.5 µ S
VIHZ (min)
VIL
VSS
D+
D-D- / D+
Device
Connected
Connect
Detected
≥ 2.5 µ S
VIH
VSS
c) Full-speed Device Connect Detection
VOH (min)
VIH (min)
VIL (max)
VOL (max)
VSS
Bus Idle
Bus Idle
Bus
Floats
Bus Driven to
J State at end
of EOP
Last Bit
of Packet
SE0
Portion
of EOP
SOP
First Bit
of Packet
VOH (min)
VIH (min)
VIL (max)
VOL (max)
VSS
TPERIOD
TPERIOD = 12Mbps (
± 0.25%)
TxDJ1 = Min-3.5ns~Max3.5ns
TxDJ2 = Min-4ns~Max4ns
Crossover
Points
Differential
Data Lines
(VCRS)
Consecutive
Transitions
N * TPERIOD + TxDJ1
Paired
Transitions
N * TPERIOD + TxDJ2
d) Differential Data Jitter