G35 datasheet(32/351 Pages) INTEL

32 / 351 page

Signal Description

Datasheet

Signal Name

Type

Description

HDINV[3:0]#

I/O

GTL+

Dynamic Bus Inversion: Driven along with the HD[63:0]#

signals. Indicates if the associated signals are inverted or not.

HDINV[3:0]# are asserted such that the number of data bits

driven electrically low (low voltage) within the corresponding 16

bit group never exceeds 8.

HDINV[x]# Data Bits

HDINV[3]#

HD[63:48]#

HDINV[2]#

HD[47:32]#

HDINV[1]#

HD[31:16]#

HDINV[0]#

HD[15:0]#

HA[35:3]#

I/O

GTL+

Host Address Bus: HA[35:3]# connect to the processor

address bus. During processor cycles, the HA[35:3]# are inputs.

The GMCH drives HA[35:3]# during snoop cycles on behalf of

DMI and PCI Express* Graphics initiators. HA[35:3]# are

transferred at 2x rate.

HADSTB[1:0]#

I/O

GTL+

Host Address Strobe: The source synchronous strobes used to

transfer HA[35:3]# and HREQ[4:0] at the 2x transfer rate.

HD[63:0]#

I/O

GTL+

Host Data: These signals are connected to the processor data

bus. Data on HD[63:0] is transferred at 4x rate. Note that the

data signals may be inverted on the processor bus, depending

on the HDINV[3:0]# signals.

HDSTBP[3:0]#

HDSTBN[3:0]#

I/O

GTL+

Differential Host Data Strobes: The differential source

synchronous strobes used to transfer HD[63:0]# and

HDINV[3:0]# at 4x transfer rate.

Named this way because they are not level sensitive. Data is

captured on the falling edge of both strobes. Hence, they are

pseudo-differential, and not true differential.

Strobes

Bits

Data

HDSTBP3#,

HDSTBN3#

HDINV3#

HD[63:48]#

HDSTBP2#,

HDSTBN2#

HDINV2#

HD[47:32]#

HDSTBP1#,

HDSTBN1#

HDINV1#

HD[31:16]#

HDSTBP0#,

HDSTBN0#

HDINV0#

HD[15:0]#

HHIT#

I/O

GTL+

Hit: Indicates that a caching agent holds an unmodified version

of the requested line. Also, driven in conjunction with HHITM#

by the target to extend the snoop window.

HHITM#

I/O

GTL+

Hit Modified: Indicates that a caching agent holds a modified

version of the requested line and that this agent assumes

responsibility for providing the line. Also, driven in conjunction

with HHIT# to extend the snoop window.

G35 Datasheet(PDF) 32 Page - Intel Corporation

G35 Datasheet(HTML) 32 Page - Intel Corporation

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

Datasheet Download

Link URL