AM79C970A datasheet(176/219 Pages) AMD

176 / 219 page

AMD

P R E L I M I N A R Y

176

Am79C970A

DC CHARACTERISTICS over COMMERCIAL operating ranges unless otherwise

specified (continued)

Parameter

Symbol

Parameter Description

Test Conditions

Min

Max

Units

Twisted Pair Interface (10BASE-T) (Continued)

VRXDTH

RXD Switching Threshold

(Note 6)

–35

VTXH

TXD

± and TXP± Output HIGH Voltage

AVSS= 0 V

AVDD–0.6

AVDD

VTXL

TXD

± and TXP± Output LOW Voltage

AVDD = 5 V

AVSS

AVSS+0.6

VTXI

TXD

± and TXP± Differential

Output Voltage Imbalance

–40

VTXOFF

TXD

± and TXP± Idle Output Voltage

RTX

TXD

± , TXP± Differential Driver

(Note 6)

Ω

Output Impedance

Attachment Unit Interface (AUI)

IIAXD

Input Current at DI+ and DI–

–1V < VIN < AVDD + 0.5 V

–500

+500

µA

IIAXC

Input Current at CI+ and CI–

–1V < VIN < AVDD + 0.5 V

–500

+500

µA

VAOD

Differential Output Voltage

RL = 78

Ω

630

1200

|(DO+)–(DO–)|

VAODOFF

Transmit Differential Output Idle Voltage

RL = 78

Ω (Note 9)

–40

IAODOFF

Transmit Differential Output Idle Current

RL = 78

Ω (Note 8)

–1

VCMT

Transmit Output Common Mode Voltage

RL = 78

Ω

2.5

AVDD

VODI

± Transmit Differential Output

RL = 78

Ω (Note 7)

Voltage Imbalance

VATH

Receive Data Differential Input Threshold

–35

VASQ

± and CI± Differential Input

–275

–160

Threshold (Squelch)

VIRDVD

± and CI± Differential Mode Input

–1.5

1.5

Voltage Range

VICM

± and CI± Input Bias Voltage

IIN = 0 mA

AVDD–3.0 AVDD–1.0

VOPD

± Undershoot Voltage at ZERO

(Note 9)

–100

Differential on Transmit Return

to ZERO (ETD)

Notes:

1. I

OL1 applies to AD[31:0], C/BE[3:0], PAR and REQ.

OL2 applies to DEVSEL, FRAME, INTA, IRDY, PERR, SERR, STOP, TRDY, EECS, ERA[7:0], ERACLK, EROE, DXCVR/

NOUT, ERD7/TXDAT, ERD6/TXEN and TDO.

OL3 applies to EESK/LED1/SFBD, LED2/SRDCLK, EEDO/LED3/SRD, and EEDI/LNKST.

2. V

OH does not apply to open-drain output pins.

3. Outputs are CMOS and will be driven to rail if the load is not resistive.

4. I

IX applies to all input pins except XTAL1.

5. I

OZL and IOZH apply to all three-state output pins and bi-directional pins.

6. Parameter not tested. Value determined by characterization.

7. Tested, but to values in excess of limits. Test accuracy not sufficient to allow screening guard bands.

8. Correlated to other tested parameters—not tested directly.

9. Test not implemented to data sheet specification.

10. The power supply current in Magic Packet mode is linear. For example, at CLK = 20 MHz the maximum Magic Packet mode

power supply current would be 67 mA.

AM79C970A датащи(PDF) 176 Page - Advanced Micro Devices

AM79C970A датащи(HTML) 176 Page - Advanced Micro Devices

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

датащи скачать

ссылки URL