STANDARD PRODUCT
PM4328 TECT3
DATASHEET
PMC-2011596
ISSUE 1
HIGH DENSITY T1/E1 FRAMER
AND M13 MULTIPLEXER
Pin Name
Type Pin Function
No.
A collision is detected when either of SBIDET[1:0]
signals are active concurrently with this device driving
SBIACT. When collisions occur the SBI drivers are
disabled and an interrupt is generated to signal the
collision.
These signals are sampled on the rising edge of
SREFCLK.
SBIDET[1] is shared with serial interface signal ED[7].
Microprocessor Interface
INTB
Output A16
OD
Active low Open-Drain Interrupt (INTB). This signal
goes low when an unmasked interrupt event is
detected on any of the internal interrupt sources. Note
that INTB will remain low until all active, unmasked
interrupt sources are acknowledged at their source.
CSB
RDB
Input D16
Input B16
Active Low Chip Select (CSB). This signal is low
during TECT3 register accesses. CSB has an integral
pull up resistor.
Active Low Read Enable (RDB). This signal is low
during TECT3 register read accesses. The TECT3
drives the D[7:0] bus with the contents of the
addressed register while RDB and CSB are low.
WRB
Input C15
Active Low Write Strobe (WRB). This signal is low
during a TECT3 register write access. The D[7:0] bus
contents are clocked into the addressed register on the
rising WRB edge while CSB is low.
PROPRIETARY AND CONFIDENTIAL
47
PMC [ PMC-SIERRA, INC ]
