CS8904
Crystal LAN™ Quad Ethernet Transceiver
10BASE-T CHARACTERISTICS (Over Recommended Operating Conditions;
Received Jitter tested at ±12.0 ns.)
Parameter
Transmit
Symbol
Min
Typ
Max
Unit
Tx pair Jitter into 100 Ω Load
tTTX1
tTTX2
tTTX3
-
-
-
-
-
8
4.5
-
ns
ns
ns
Tx Pair Return to ≤ 50 mV after Last Positive Transition
Tx Pair High Hold Time after Last Positive Transition
250
Interface
Transmitter Differential Output Voltage
Peak
Peak
VOD
VISQ
2.2
-
-
2.8
V
Receiver Squelch Level
300
525
mV
Link Integrity
First Transmitted Link Pulse after Last Transmitted Packet
Time Between Transmitted Link Pulses
tLN1
tLN2
tLN3
tLN4
tLN5
tLN6
8
8
16
16
100
-
24
24
ms
ms
ns
Width of Transmitted Link Pulses
60
2
200
7
Minimum Received Link Pulse Separation
Maximum Received Link Pulse Separation
Last Receive Activity to Link Fail (Link Loss Timer)
ms
ms
ms
25
30
-
150
150
-
CRYSTAL OSCILLATOR REQUIREMENTS
Parameter
Min
-
Typ
Max
Unit
MHz
ppm
Parallel Resonant Frequency
20
-
-
Resonant Frequency Error
CL = 18 pF
-50
+50
Resonant Frequency Change over Operating Temperature
Crystal Capacitance
-40
-
+40
18
-
ppm
pF
pF
Ω
-
-
-
-
0.022
-
Motional Crystal Capacitance
Series Resistance
35
CIRRUS LOGIC ADVANCED PRODUCT DATABOOK
32
DS191PP2
CIRRUS [ CIRRUS LOGIC ]
