DP83255AVF datasheet(71/96 Pages) NSC

71 / 96 page

60 Pin Descriptions (Continued)

PHY PORT INTERFACE

The PHY Port Interface consists of IO signals used to connect the PLAYER Device to the Media Access Control (MAC)

sublayer or other PLAYER Devices The DP83255 Device has two PHY Port Interfaces The A

Request and A

Indicate paths

form one PHY Port Interface and the B

Request and B

Indicate paths form the second PHY Port Interface Each path

consists of an odd parity bit a control bit and two 4-bit symbols

Refer to Section 33 the Configuration Switch for more information

Symbol

Pin No

Description

AIP

PHY Port A Indicate Parity

A TTL output signal representing odd parity for the 10-bit

wide Port A Indicate signals (AIP AIC and AIDk70l)

AIC

PHY Port A Indicate Control

A TTL output signal indicating that the two 4-bit symbols

(AIDk74l and AIDk30l) are either control symbols (AIC e 1) or data symbols (AIC

AID7

PHY Port A Indicate Data

TTL output signals representing the first 4-bit datacontrol

symbol

AID6

AID5

AID7 is the most significant bit and AID4 is the least significant bit of the first symbol

AID4

AID3

PHY Port A Indicate Data

TTL output signals representing the second 4-bit data

control symbol

AID2

AID1

AID3 is the most significant bit and AID0 is the least significant bit of the second symbol

AID0

ARP

PHY Port A Request Parity

A TTL input signal representing odd parity for the 10-bit

wide Port A Request signals (ARP ARC and ARDk70l)

ARC

PHY Port A Request Control

A TTL input signal indicating that the two 4-bit symbols

(ARDk74l and ARDk30l) are either control symbols (ARC e 1) or data symbols

(ARC e 0)

ARD7

PHY Port A Request Data

TTL input signals representing the first 4 bit datacontrol

symbol

ARD6

ARD7 is the most significant bit and ARD4 is the least significant bit of the first symbol

ARD5

ARD4

ARD3

PHY Port A Request Data

TTL input signals representing the second 4-bit datacontrol

symbol

ARD2

ARD3 is the most significant bit and ARD0 is the least significant bit of the second

ARD1

symbol

ARD0

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