DS2165 datasheet(5/17 Pages) DALLAS

5 / 17 page

DS2165Q

5 of 17

Figure 3. ADDRESS/COMMAND BYTE

(MSB)

(LSB)

—

X/ Y

SYMBOL

POSITION

FUNCTION

—

ACB.7

Reserved. Must be 0 for proper operation

X/ Y

ACB.6

X/Y Channel Select

0 = update channel Y characteristics

1 = update channel X characteristics

ACB.5

MSB of device address

ACB.4

—

ACB.3

—

ACB.2

—

ACB.1

—

ACB.0

LSB of device address

Figure 4. CONTROL REGISTER

(MSB)

(LSB)

AS0

AS1

IPD

ALRST

BYP

U/ A

AS2

CP/ EX

SYMBOL

POSITION

FUNCTION

AS0

CR.7

Algorithm Select 0 (Table 2)

AS1

CR.6

Algorithm Select 1 (Table 2)

IPD

CR.5

Idle and Power-Down

0 = channel enabled

1 = channel disabled (output tri-stated)

ALRST

CR.4

Algorithm Reset

0 = normal operation

1 = reset algorithm for selected channel

BYP

CR.3

Bypass

0 = normal operation

1 = bypass selected channel

U/ A

CR.2

Data Format

0 = A-law

1 =

m-law

AS2

CR.1

Algorithm Select 2 (Table 2)

CP/ EX

CR.0

Channel Coding

0 = expand (decode) selected channel

1 = compress (encode) selected channel

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