Oki OKIPAGE 14i Maintenance Manual page 145

8)
Input Levels :
High (driven)
High (floating)
Low
Output Levels :
Low
High (driven)
Output Signal Crossover Voltage
Differential "1"
Differential "0"
Single-ended 0 (SE0)
Data J state:
Low-speed
Full-speed
Data K state:
Low-speed
Full-speed
Idle state:
Low-speed
Full-speed
Resume state
Start-of-Packet (SOP)
End-of-Packet (EOP)
Disconnect
(at downstream port)
Connect
(at downstream port)
Reset
Note:
41356801TH Rev.1
Signal Level
• Input / Output Level
Parameter
• Signaling Levels
Bus State
(D+) - (D-) > 200mV and D+ > V
(D-) - (D+) > 200mV and D- > V
D+ and D- < V
Differential "0"
Differential "1"
Differential "1"
Differential "0"
D- > V (min) and D+ < V
IHZ
D+ > V (min) and D- < V
IHZ
Data K state
Data lines switch from Idle to K state
SE0 for ≥ 1 bit time
for 1 bit time
SE0 for ≥ 2.5µs
Idle for ≥ 2ms
D+ and D- < V
The width of EOP is defined in bit times relative to the device type receiving the EOP.
The bit time is approximate.
Symbol Min.
V 2.0
IH
V 2.7
IHZ
V
IL
OL 0.0
OH 2.8
V 1.3
CRS
Signaling Levels
Required
(min) (D+) - (D-) > 200mV
IH
(min) (D-) - (D+) > 200mV
IH
(max) D+ and D- < V
IL
(max) D- > V
IL
(max) D+ > V
IL
SE0 for ≥ 1 bit time
1 followed by a J state
Idle for ≥ 2.5µs
(max) for ≥ 10ms
D+ and D- < V
IL
Max. Units
V
3.6 V
0.8 V
0.3 V
3.6 V
2.0 V
Acceptable
(min)
IH
(min) and D+ < V (min)
IHZ IH
(min) and D- < V (min)
IHZ IH
1 followed by a J state
(max) for ≥ 2.5µs
IL
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