DM9161B
10/100 Mbps Fast Ethernet Physical Layer Single Chip Transceiver
Final 36
Version: DM9161B-12-DS-F01
January 31, 2008
9.3 DC Electrical Characteristics (DVDD = 3.3V)
Symbol Parameter Min. Typ. Max. Unit Conditions
TTL Inputs
(TXD0~TXD3, TXCLK, MDC, MDIO, TXEN, TXER, RXEN, TESTMODE, RMII, PHYAD0~4, OPMODE0-2, RPTR,
RESET# )
VIL Input Low Voltage - - 0.8 V
VIH Input High Voltage 2.0 - - V
IIL Input Low Leakage Current - - 1 uA VIN = 0.4V
IIH Input High Leakage Current -1 - uA VIN = 2.7V
VOL Output Low Voltage - - 0.4 V IOL = 4mA
VOH Output High Voltage 2.4 - - V IOH = -4mA
Receiver
VICM RX+/RX- Common mode Input Voltage - 1.8 - V
100 Ω Termination Across
Transmitter
VTD100 100TX+/- Differential Output Voltage 1.9 2.0 2.1 V Peak to Peak
VTD10 10TX+/- Differential Output Voltage 4.4 5 5.6 V Peak to Peak
ITD100 100TX+/- Differential Output Current │19│ │20│ │21│ mA
ITD10 10TX+/- Differential Output Current │44│ │50│ │56│ mA
9.4 AC Electrical Characteristics & Timing Waveforms
9.4.1 TP Interface
Symbol Parameter Min. Typ. Max. Unit Conditions
tTR/F
100TX+/- Differential Rise/Fall Time 3.0 - 5.0 ns
tTM
100TX+/- Differential Rise/Fall Time Mismatch 0 - 0.5 ns
tTDC
100TX+/- Differential Output Duty Cycle
Distortion
0 - 0.5 ns
tT/T 100TX+/- Differential Output Peak-to-Peak Jitter 0 - 1.4 ns
XOST 100TX+/- Differential Voltage Overshoot 0 - 5 %
9.4.2 Oscillator/Crystal Timing
Symbol Parameter Min. Typ. Max. Unit Conditions
OSC Frag 24.998 25 25.001 mhz 50ppm
tCKC OSC Cycle Time 39.998 40 40.002 ns 50ppm
tPWH OSC Pulse Width High 16 20 24 ns
tPWL OSC Pulse Width Low 16 20 24 ns
