73K224L-28IHR/F 查看數據表（PDF） - Teridian Semiconductor Corporation

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73K224L-28IHR/F

V.22bis, V.22, V.21, Bell 212A, 103 Single-Chip Modem

Teridian Semiconductor Corporation 

73K224L

V.22bis, V.22, V.21, Bell 212A, 103

Single-Chip Modem

DATA SHEET

CONTROL REGISTER 1 (continued)

D7

D6

D5

CR1

001

TRANSMIT

PATTERN

1

TRANSMIT

PATTERN

0

ENABLE

DETECT

INT.

BIT NO.

NAME

CONDITION

D4

Bypass

0

Scrambler

1

D5

Enable Detect

0

Interrupt

1

D7, D6

Transmit

Pattern

D7 D6

00

01

10

11

D4

D3

D2

D1

D0

BYPASS

CLK

SCRAMB CONTROL

RESET

TEST

MODE

1

TEST

MODE

0

DESCRIPTION

Selects normal operation. DPSK and QAM data is passed through

scrambler.

Selects Scrambler Bypass. Bypass DPSK and QAM data is

routed around scrambler in the transmit path.

Disables interrupt at INT pin. All interrupts are normally

disabled in power down mode.

Enables INT output. An interrupt will be generated with a

change in status of DR bits D1-D4 and D6. The answer

tone and call progress detect interrupts are masked when

the TX enable bit is set. Carrier detect is masked when TX

DTMF is activated. All interrupts will be disabled if the

device is in power down mode.

Selects normal data transmission as controlled by the state

of the TXD pin.

Selects an alternating mark/space transmit pattern for

modem testing and handshaking. Also used for S1 pattern

generation. See CR2 bit D4.

Selects a constant mark transmit pattern.

Selects a constant space transmit pattern.

DETECT REGISTER

D7

D6

D5

DR

RECEIVE

S1

RECEIVE

010

LEVEL

PATTERN

DATA

INDICATOR

DETECT

BIT NO.

D0

NAME

Signal Quality

Indicator

CONDITION

0

1

D1

Call Progress

0

Detect

1

D4

D3

D2

D1

D0

UNSCR

MARK.

DETECT

CARR.

DETECT

ANSWER

TONE

DETECT

CALL

PROG.

DETECT

SIGNAL

QUALITY

INDICATOR

DESCRIPTION

Indicates normal received signal.

Indicates low received signal quality (above average error

rate). Interacts with special register bits D2, D1.

No call progress tone detected.

Indicates presence of call progress tones. The call progress

detection circuitry is activated by energy in the normal 350

to 620 Hz call progress bandwidth.

Page: 10 of 31

© 2005, 2008 TERIDIAN Semiconductor Corporation

Rev 7.1

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