CS5543 datasheet(22/30 Pages) CIRRUS

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CS5542 CS5543

DS109PP2

The Operating Mode Register (OMR) allows ac-

cess to the device operating modes via the DATA-

SEL and DMODE pins as shown in figure 9.

The Bypass Register allows a minimum length path

between the TDI and TDO pins on the device. This

not need to be tested during board-level test opera-

tion.

TAP Operation for EXTEST

Before execution of the instruction EXTEST, the

SAMPLE/PRELOAD instruction must be used to

load testing data to all output pins through TDI.

Each output pin requires two bits. The first bit to

be shifted in controls the output enable function. If

a logic 1 is entered, the output is enabled; if a logic

0 is entered, the output is disabled. The second bit

shifted in after the first bit is the test data. There-

fore, two TCK cycles are required to load testing

data into the boundary-scan register for each output

pin.

Device Identification Register

Table 7. Device Identification Register

TDI

DATSEL

DMODE

3 2 1 0 2 1 0

6 5 4 3 2 1 0

TDO

OMR Bit #

Figure 9. Operating Mode Register

MSB

P15

P14

P13

P12

P11

P10

LSB

M10

M9M8M7M6M5M4M3M2M1M0

BIT

NAME

VALUE

FUNCTION

V3-V0

Version Bits

0000

Version Number of Device

P15-P0

Part Number Bits

0101010101000011

Part Number of Device

M10-M0

Manufacture Number Bits

00001100100

Manufacture Number

Logic 1

Always Logic 1

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