X9409YS24I-2.7 datasheet(9/20 Pages) INTERSIL

Part #	X9409YS24I-2.7

Description	Low Noise/Low Power/2-Wire Bus

Download	20 Pages

Scroll/Zoom	100%

Manufacturer	INTERSIL [Intersil Corporation]

Direct Link	http://www.intersil.com/cda/home

Logo

9 / 20 page

9

FN8192.3

October 19, 2005

DETAILED OPERATION

All XDCP potentiometers share the serial interface

and share a common architecture. Each potentiometer

has a Wiper Counter Register and 4 Data Registers. A

detailed discussion of the register organization and

array operation follows.

Wiper Counter Register

The X9409 contains four Wiper Counter Registers,

one for each XDCP potentiometer. The Wiper Counter

Register can be envisioned as a 6-bit parallel and

serial load counter with its outputs decoded to select

one of sixty-four switches along its resistor array. The

contents of the WCR can be altered in four ways: it

may be written directly by the host via the Write Wiper

Counter Register instruction (serial load); it may be

written indirectly by transferring the contents of one of

the four associated Data Registers via the XFR Data

Register instruction (parallel load); it can be modified

one step at a time by the Increment/ Decrement

instruction. Finally, it is loaded with the contents of its

Data Register zero (DR0) upon power-up.

The WCR is a volatile register; that is, its contents are

lost when the X9409 is powered-down. Although the

register is automatically loaded with the value in DR0

upon power-up, it should be noted this may be

different from the value present at power-down.

Data Registers

Each

potentiometer

has

four

nonvolatile

Data

Registers. These can be read or written directly by the

host and data can be transferred between any of the

four Data Registers and the Wiper Counter Register. It

should be noted all operations changing data in one of

these registers is a nonvolatile operation and will take

a maximum of 10ms.

If the application does not require storage of multiple

settings for the potentiometer, these registers can be

used as regular memory locations that could possibly

store system parameters or user preference data.

Register Descriptions

Data Registers, (6-Bit), Nonvolatile:

Four 6-bit Data Registers for each XDCP. (sixteen 6-

bit registers in total).

– {D5~D0}: These bits are for general purpose not vol-

atile data storage or for storage of up to four differ-

ent wiper values. The contents of Data Register 0

are automatically moved to the wiper counter regis-

ter on power-up.

Wiper Counter Register, (6-Bit), Volatile:

One 6-bit Wiper Counter Register for each XDCP.

(Four 6-bit registers in total.)

– {D5~D0}: These bits specify the wiper position of the

respective XDCP. The Wiper Counter Register is

loaded on power-up by the value in Data Register

R0. The contents of the WCR can be loaded from

any of the other Data Register or directly by com-

mand. The contents of the WCR can be saved in a

DR.

D5

D4

D3

D2

D1

D0

NV

(MSB)

(LSB)

WP5

WP4

WP3

WP2

WP1

WP0

VVVVVV

(MSB)

(LSB)

X9409

Similar Part No. - X9409YS24I-2.7

Manufacturer	Part #	Datasheet	Description
Xicor Inc.	X9409YS24I-2.7	407Kb / 21P	Quad Digitally Controlled Potentiometers

More results

Similar Description - X9409YS24I-2.7

Manufacturer	Part #	Datasheet	Description
Intersil Corporation	X9408	373Kb / 21P	Low Noise/Low Power/2-Wire Bus
	X9258	348Kb / 20P	Low Noise/Low Power/2-Wire Bus/256 Taps
	X9258	491Kb / 19P	Low Noise/Low Power/2-Wire Bus/256 Taps
Renesas Technology Corp	X9429	835Kb / 21P	Low Noise/Low Power/2-Wire Bus Single Digitally Controlled Potentiometer (XDCP??
	X9418	827Kb / 20P	Low Noise/Low Power/2-Wire Bus Dual Digitally Controlled Potentiometers (XDCP??
	X9409	788Kb / 19P	Low Noise/Low Power/2-Wire Bus Quad Digitally Controlled Potentiometers (XDCP)
	X9408	814Kb / 20P	Low Noise/Low Power/2-Wire Bus Quad Digitally Controlled (XDCP?? Potentiometers
	X9258	801Kb / 19P	Low Noise/Low Power/2-Wire Bus/256 Taps Quad Digital Controlled Potentiometers (XDCP??
	X9410	479Kb / 21P	Low Noise/Low Power/SPI Bus October 12, 2006
Intersil Corporation	X9401	371Kb / 20P	Low Noise/Low Power/SPI Bus

More results

X9409YS24I-2.7 Datasheet(PDF) 9 Page - Intersil Corporation

X9409YS24I-2.7 Datasheet(HTML) 9 Page - Intersil Corporation

Similar Part No. - X9409YS24I-2.7

Similar Description - X9409YS24I-2.7

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

Datasheet Download

Link URL