ACS8514 datasheet(72/86 Pages) SEMTECH

Part #	ACS8514

Description	Synchronous Equipment Timing Source Partner IC for 2nd T4 DPLL, Accurate Monitoring & Input Extender

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Manufacturer	SEMTECH [Semtech Corporation]

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Revision 3.00 April 2007 © Semtech Corp.

Page 72

www.semtech.com

ACS8514 SETS Buddy

ADVANCED COMMS & SENSING

FINAL

DATASHEET

Address(hex): 7F

Register Name cnfg_uPsel

Description

(R/W)* Register reflecting the

value on the UPSEL device pins

following reset, and writeable in

EPROM mode.

Default Value

0000 0000**

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

upsel_value

Bit No.

Description

Bit Value

Value Description

[7:3]

Not used.

-

[2:0]

upsel_value

This register defaults to reflecting the value present

on the UPSEL pins of the device at reset. At reset this

is used to set the mode of the microprocessor

interface. Following power-up, these pins have no

further effect on the microprocessor interface.

*In order that the device can be "booted" from an

EPROM and subsequently communicate with a

processor, this register is programmable in EPROM

mode. The value programmed in location 7F of the

EPROM will be the value loaded into this register.

**The default of this register is entirely dependent on

the value of the pins at reset.

000

001

010

011

100

101

110

111

(value at reset)

Not used.

Interface in EPROM boot mode.

Interface in Multiplexed mode.

Interface in Intel mode.

Interface in Motorola mode.

Interface in Serial mode.

Not used.

All not mentioned addresses should not be written to.

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