73K222AU 데이터 시트보기 (PDF) - TDK Corporation

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73K222AU

Single-Chip Modem Modem with UART

TDK Corporation 

73K222AU

Single-Chip Modem

with UART

MODEM CONTROL REGISTER OVERVIEW

ADDRESS

DATA BIT NUMBER

STNDLN

0

1

REGISTER

MA2- UA3-

D7

D6

D5

D4

D3

D2

D1

D0

MA0 UA0

CONTROL

REGISTER

0

CR0

000

1000

MODULATION

OPTION

0

MODULATION

MODE

POWER

ON

CHARACTER CHARACTER

SIZE 1

SIZE 0

(READ ONLY) (READ ONLY)

TRANSMIT

ENABLE

ORIGINATE/

ANSWER

CONTROL

REGISTER

1

CR1

TRANSMIT

001 1001 PATTERN

1

TRANSMIT

PATTERN

0

ENABLE

DETECT

INTERRUPT

BYPASS

SCRAMBLER

CLK

CONTROL

RESET

TEST

MODE

1

TEST

MODE

0

DETECT

REGISTER

DR

010

1010

DEVICE

SIGNATURE

1

DEVICE

SIGNATURE

0

RECEIVE

DATA

UNSCR.

MARK

DETECT

CARRIER

DETECT

ANSWER

TONE

DETECT

CALL

PROGRESS

DETECT

LONG

LOOP

DETECT

TONE

CONTROL TONE 011

REGISTER

1011

RXD/TXD

CONTROL

TRANSMIT

GUARD

TONE

TRANSMIT

ANSWER

TONE

TRANSMIT

DTMF

DTMF

3

DTMF

2

DTMF

1

DTMF 0

GUARD/ANS.

TONE

CONTROL

REGISTER CR2 100 1100

2

RESERVED FOR FUTURE USE

CONTROL

SPEAKER

SPEAKER

REGISTER CR3 101 1101

VOLUME

VOLUME

OFF-HOOK

X

X

X

X

X

3

1

0

SCRATCH

REGISTER

SCR

110

1110

BIT 7

UART

CONTROL

REGISTER

UCR

111

1111

TXCLK

(READ ONLY)

X = Undefined, mask in software

0 = Only write zero to this location

BIT 6

X

BIT 5

BIT 4

BIT 3

REQUEST

TO SEND

(RTS)

(READ ONLY)

DATA

TERM. READY

(DTR)

(READ ONLY)

RING

INDICATOR

(RI)

BIT 2

DATA

CARRIER

DETECT

(DCD)

BIT 1

DATA

SET

READY

(DSR)

BIT 0

CLEAR

TO

SEND

(CTS)

12

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