AM79C901AVCT datasheet(67/90 Pages) AMD

67 / 90 page

Am79C901A

PR ELI M IN AR Y

DC CHARACTERISTICS

Notes:

1. VOH does not apply to open-drain output pins.

2. IOH2 applies to all other outputs.

3. IOZ applies to all output and bidirectional pins. Tests are performed at VIN = 0 V and at VDD only.

4. IIX applies to all input pins except TDI, TCLK, and TMS pins.

5. IIL and IIH apply to the TDI, TCLK, and TMS pins.

6. Parameter not tested. Value determined by characterization.

7. CCLK applies only to the CLK pin.

8. VOUT reflects output levels prior to 1: √ 2 transformer state.

Parameter

Symbol

Parameter Description

Test Conditions

Min

Max

Units

Digital I/O Voltage

VIH

Input HIGH Voltage

2.0

VIH5V

Input HIGH voltage (5V)

2.0

DVDD + 2.5

VIL

Input LOW Voltage

0.8

VOL

Output LOW Voltage

IOL1 = 4 mA

IOL2 = 6 mA

IOL3 = 12 mA

0.4

VOH

Output HIGH Voltage (Notes 1, 2)

IOH1 = -4 mA

IOH2 = -2 mA

(Note 2)

2.4

VOUT

Output Voltage on TX± (peak)

(Note 8)

1.55

1.98

VDIFF

Input Differential Squelch Assert on

RX± (peak)

300

520

VDIFF

Input Differential De-Assert Voltage

on RX± (peak)

150

300

Digital I/O Current

IOZ

Output Leakage Current (Note 3)

0 V <VOUT <VDD

-10

µA

IIX

Input Leakage Current (Note 4)

0 V < VIN < VDD

-10

µA

IIL

Input LOW Current (Note 5)

VIN = 0 V; VDD = 3.6 V

-200

-10

µA

IIH

Input HIGH Current (Note 5)

VIN = 2.7 V; VDD = 3.6 V

-50

µA

Power Supply Current

ICC

(1 Mbps)

1 Mbps mode on TX± and RX±.

Outputs driving load.

VDD= Maximum

Transmitting maximum packets at

minimum IPG.

100

ICC

(10 Mbps)

10BASE-T mode on TX± and RX±.

Outputs driving load.

VDD = Maximum

Transmitting maximum packets at

minimum IPG.

175

ICC

(Static)

XCLK frequency = 0.

VDD = Maximum

ICC

(Idle)

Not transmitting.

VDD = Maximum

Pin Capacitance

CIN

Pin Capacitance

FC = 1 MHz (Note 6)

CCLK

CLK Pin Capacitance

FC = 1 MHz (Notes 6, 7)

LPIN

Pin Inductance

FC = 1 MHz (Note 6)

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