TC7109CLW datasheet(12/21 Pages) TELCOM

12 / 21 page

3-102

TELCOM SEMICONDUCTOR, INC.

TC7109

TC7109A

12-BIT

µP-COMPATIBLE

ANALOG-TO-DIGITAL CONVERTERS

Figure 8.

TC7109A Handshake — Typical UART Interface Timing

Figure 7.

TC7109A Handshake With SEND INPUT Held Positive

= THREE-STATE

HIGH IMPEDANCE

INTEGRATOR

OUTPUT

DATA VALID

INTERNAL CLOCK

INTERNAL LATCH

STATUS OUTPUT

MODE INPUT

INTERNAL MODE

SEND INPUT

CE/LOAD

HBEN

HIGH-BYTE DATA

LBEN

LOW-BYTE DATA

= DON'T CARE

= THREE-STATE

WITH PULL-UP

UART

NORM

TERMINATES

UART MODE

ZERO CROSSING DETECTED

ZERO CROSSING OCCURS

SEND SENSED

MODE LOW,

NOT IN

HANDSHAKE

MODE

DISABLES

OUTPUTS

CE/LOAD,

HBEN,

LBEN

MODE HIGH ACTIVATES

CE/LOAD, HBEN, LBEN

= THREE-STATE HIGH IMPEDANCE

INTEGRATOR OUTPUT

DATA VALID

INTERNAL CLOCK

INTERNAL LATCH

STATUS OUTPUT

MODE INPUT

INTERNAL MODE

SEND INPUT (UART TBRE)

CE/LOAD OUTPUT (UART TBRL)

HBEN

HIGH-BYTE DATA

LBEN

LOW-BYTE DATA

= DON'T CARE

UART

NORM

TERMINATES

UART MODE

ZERO CROSSING DETECTED

ZERO CROSSING OCCURS

SEND

SENSED

SEND

SENSED

SEND

SENSED

DATA VALID

TC7109CLW 数据表(PDF) 12 Page - TelCom Semiconductor, Inc

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