Masterclock D232 Datový list stáhnout pdf (Strana 29)

Intel

E8870 Scalable Node Controller (SNC) Datasheet 2-11

Signal Description

Itanium

2 Processor Bus (continued)

STBN[7:0]#

I/O

AGTL+

200 MHz

Data Strobes

Used to transfer data at the 2x rate. STBn[7:0]# is the negative

phase data strobe. Data transfer occurs when the voltage levels of

STBn and STPp are equal. SNC drives and samples STBn[7:0]#.

STBP[7:0]#

I/O

AGTL+

200 MHz

Data Strobes

Used to transfer data at the 2x rate. STBp[7:0]# is the positive

phase data strobe. Data transfer occurs when the voltage levels of

STBn and STPp are equal. SNC drives and samples STBp[7:0]#.

TND#

I/O

AGTL+

200 MHz

TLB Purge Not Done

SNC asserts TND# at the requesting node until the Purge TC is

completed globally.

SNC observed TND# to determine completion of Purge TC.

TRDY#

AGTL+

200 MHz

Target Ready

Indicates that the target for the host transaction is able to enter the

data transfer phase.

Table 2-4. SNC Signal List (Continued)

Signal Type Frequency Description

1 2 ... 24 25 26 27 28 29 30 31 32 33 34 ... 239 240

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