PM4341AT1XC
DATA SHEET
PMC-900602
ISSUE 7
T1 FRAMER/TRANSCEIVER
HIZIO,HIZDATA:
The HIZIO and HIZDATA bits control the tri-state modes of the T1XC . While
the HIZIO bit is a logic 1, all output pins of the T1XC except the data bus are
held in a high-impedance state. The microprocessor interface is still active.
While the HIZDATA bit is a logic 1, the data bus is also held in a high-
impedance state which inhibits microprocessor read cycles.
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
91