TC7109 TelCom, TC7109 Datasheet - Page 12

• Manufacturer Part Number: TC7109
• Description: 12-BIT UP-COMPATIBLE ANALOG-TO-DIGITAL CONVERTERS
• Manufacturer: TelCom

TC7109
TC7109A
3-102
INTERNAL CLOCK
CE/LOAD OUTPUT (UART TBRL)
INTERNAL LATCH
HIGH-BYTE DATA
STATUS OUTPUT
LOW-BYTE DATA
INTERNAL MODE
INTEGRATOR
MODE INPUT
SEND INPUT
SEND INPUT (UART TBRE)
CE/LOAD
INTEGRATOR OUTPUT
OUTPUT
HBEN
LBEN
INTERNAL CLOCK
INTERNAL LATCH
HIGH-BYTE DATA
STATUS OUTPUT
LOW-BYTE DATA
INTERNAL MODE
MODE INPUT
UART
NORM
HBEN
LBEN
= DON'T CARE
ZERO CROSSING OCCURS
Figure 7.
Figure 8.
UART
NORM
MODE HIGH ACTIVATES
CE/LOAD, HBEN, LBEN
ZERO CROSSING DETECTED
= DON'T CARE
TC7109A Handshake With SEND INPUT Held Positive
TC7109A Handshake — Typical UART Interface Timing
ZERO CROSSING OCCURS
SEND SENSED
ZERO CROSSING DETECTED
= THREE-STATE
DATA VALID
HIGH IMPEDANCE
SEND
SENSED
DATA VALID
= THREE-STATE HIGH IMPEDANCE
ANALOG-TO-DIGITAL CONVERTERS
SENSED
SEND
SEND SENSED
DATA VALID
= THREE-STATE
WITH PULL-UP
DATA VALID
TELCOM SEMICONDUCTOR, INC.
12-BIT P-COMPATIBLE
SENSED
TERMINATES
UART MODE
SEND
TERMINATES
UART MODE
MODE LOW,
NOT IN
HANDSHAKE
MODE
DISABLES
OUTPUTS
CE/LOAD,
HBEN,
LBEN