AMD-K6 datasheet(136/346 Pages) AMD

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Signal Descriptions

Chapter 5

AMD-K6® Processor Data Sheet

20695H/0—March 1998

Preliminary Information

Table 15. Output Pin Float Conditions

Name

Floated At: (Note 1)

Note

Name

Floated At: (Note 1)

Note

A[4:3]

HLDA, AHOLD, BOFF#

Note 2, 3

HITM#

Always Driven

ADS#

HLDA, BOFF#

Note 2

HLDA

Always Driven

ADSC#

HLDA, BOFF#

Note 2

LOCK#

HLDA, BOFF#

Note 2

APCHK#

Always Driven

M/IO#

HLDA, BOFF#

Note 2

BE[7:0]#

HLDA, BOFF#

Note 2

PCD

HLDA, BOFF#

Note 2

BREQ

Always Driven

PCHK#

Always Driven

CACHE#

HLDA, BOFF#

Note 2

PWT

HLDA, BOFF#

Note 2

D/C#

HLDA, BOFF#

Note 2

SCYC

HLDA, BOFF#

Note 2

FERR#

Always Driven

SMIACT#

Always Driven

HIT#

Always Driven

W/R#

HLDA, BOFF#

Note 2

Notes:

1. All outputs except VCC2DET and TDO float during Tri-State Test mode.

2. Floated off the clock edge that BOFF# is sampled asserted and off the clock edge that HLDA is asserted.

3. Floated off the clock edge that AHOLD is sampled asserted.

Table 16. Input/Output Pin Float Conditions

Name

Floated At: (Note 1)

Note

A[31:5]

HLDA, AHOLD, BOFF#

Note 2,3

HLDA, AHOLD, BOFF#

Note 2,3

D[63:0]

HLDA, BOFF#

Note 2

DP[7:0]

HLDA, BOFF#

Note 2

Notes:

1. All outputs except VCC2DET and TDO float during Tri-State Test mode.

2. Floated off the clock edge that BOFF# is sampled asserted and off the clock edge that HLDA is asserted.

3. Floated off the clock edge that AHOLD is sampled asserted.

Table 17. Test Pins

Name

Type

Note

TCK

Clock

TDI

Input

Sampled on the rising edge of TCK

TDO

Output

Driven on the falling edge of TCK

TMS

Input

Sampled on the rising edge of TCK

TRST#

Input

Asynchronous (Independent of TCK)

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