Oki OKIPAGE 14e Service Manual page 128

9) Timing Chart
a) Packet Voltage Levels
VOH (min)
VIH (min)
VIL (max)
VOL (max)
VOH (min)
VIH (min)
VIL (max)
VOL (max)
b) Disconnect Detection
VIHZ (min)
c) Full-speed Device Connect Detection
d) Differential Data Jitter
Differential
Data Lines
(VCRS)
41605601TH Rev.2
VSS
Bus Idle
First Bit
SOP
of Packet
VSS
D+ / D-
VIL
D- / D+
VSS
Device
Connected
VIH
D- / D+
VSS
Device
Connected
TPERIOD
Crossover
Points
Consecutive
Transitions
N * TPERIOD + TxDJ1
Bus Driven to
Last Bit
J State at end
of Packet
SE0
Portion
of EOP
≥2.5µS
DisConnect
Detected
D+
D-
≥2.5µS
Connect
Detected
Paired
Transitions
N * TPERIOD + TxDJ2
of EOP
Bus
Floats
Bus Idle
TPERIOD = 12Mbps (±0.25%)
TxDJ1 = Min-3.5ns~Max3.5ns
TxDJ2 = Min-4ns~Max4ns
127 /