CS5535 datasheet(39/555 Pages) NSC

Part #	CS5535

Description	Geode??CS5535 I/O Companion Multi-Function South Bridge

PDF	555 Pages

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Manufacturer	NSC [National Semiconductor (TI)]

Direct Link	http://www.national.com

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39 / 555 page

Revision 0.8

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Signal Definitions (Continued)

2.2.5

System Management Bus (SMB) Interface

Signal Name

Ball No.

Type

Description

SMB_CLK

I/O

SMB Clock. This is the clock for the System Management bus. It is

initiated by the master of the current transaction. Data is sampled dur-

ing the high state of the clock.

An external pull-up resistor is required.

Shared with GPIO14. Set GPIO14 to AUX_IN and AUX_OUT_1

modes simultaneously to use as SMB_CLK. See Table 2-8 "GPIO

Options" on page 42.

External voltage applied to this ball should not exceed VIO.

SMB_DATA

I/O

SMB Data. This is the bidirectional data line for the System manage-

ment Bus. Data may change during the low state of the SMB clock

and should remain stable during the high state.

An external pull-up resistor is required.

Shared with GPIO15. Set GPIO15 to AUX_IN and AUX_OUT_1

modes simultaneously to use as SMB_DATA. See Table 2-8 "GPIO

Options" on page 42.

External voltage applied to this ball should not exceed VIO.

CS5535 Datasheet(PDF) 39 Page - National Semiconductor (TI)