STPC4EDBI datasheet(27/93 Pages) STMICROELECTRONICS | X86 Core PC Compatible Information Appliance System-on-Chip

Part No.	STPC4EDBI

Description	X86 Core PC Compatible Information Appliance System-on-Chip

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Maker	STMICROELECTRONICS [STMicroelectronics]

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STRAP OPTIONS

Release 1.5 - January 29, 2002

27/93

3. STRAP OPTIONS

This chapter defines the STPC Consumer-II Strap

Options and their location. Some strap options are

left programmable for future versions of silicon. .

Table 3-1. Strap Options

Signal

Designation

Actual Settings1

Set to ’0’

Set to ’1’

MD1

Reserved

Pull up

MD2

HCLK PLL Speed

User defined

see Section 3.1.4. bit 6

MD3

User defined

see Section 3.1.4. bit 7

MD4

PCICLKO Division

User defined

see Section 3.1.3. bit 1

MD5

MCLK/HCLK Sync (see Section 3.1.1.)

User defined

Async

Sync

MD6

PCICLKO frequency

User defined

see Section 3.1.1. bit 6

MD7

Reserved

Pull down

MD10

Reserved

Pull down

MD11

Reserved

Pull down

MD14

Reserved

Pull up

MD16

Reserved

Pull up

MD17

PCI_CLKO Divisor

User defined

see Section 3.1.3. bit 1

MD18

Reserved

Pull-up

MD19

Reserved

Pull-up

MD20

DCLK Pad Direction

User defined

Input

Output

MD21

Reserved

Pull up

MD22

Reserved

Pull up

MD23

Reserved

Pull up

MD24

HCLK PLL Speed

User defined

see Section 3.1.4. bit 3

MD25

User defined

see Section 3.1.4. bit 4

MD26

User defined

see Section 3.1.4. bit 5

MD27

Reserved

Pull down

MD28

Reserved

Pull down

MD29

Reserved

Pull down

MD30

Reserved

Pull down

MD40

CPU Mode (see Section 3.1.3.)

User defined

MD41

Reserved

Pull down

MD42

Reserved

Pull up

MD43

Reserved

Pull down

MD44

Bus select (see Section 3.1.1.)

User defined

ISA

Local Bus

MD45

Reserved

Pull down

MD46

Reserved

Pull up

MD47

Reserved

Pull down

MD48

Reserved

Pull up

Reserved

Pull up

DACK_ENC[2:0]

Reserved

Pull up

Note1: Where a strap is represented by a ’Pull up’ or ’Pull down’, these have to be adhered to. If it is represented as a ’-

’ it can be left unconnected. Where ’User defined’, the strap is set by the user.

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