PM5381-BI PMC-Sierra, Inc., PM5381-BI Datasheet - Page 74

• Manufacturer Part Number: PM5381-BI
• Description: ATM UNI, Single Channel ATM PHY Interface for 2488.32Mbps
• Manufacturer: PMC-Sierra, Inc.

Proprietary and Confidential to PMC-Sierra, Inc., and for its Customers’ Internal Use
Document ID: PMC-2000489, Issue 4
The S/UNI-2488 digital outputs and bidirectionals which have 8 mA drive capability are: TDO, INTB, D[15:0],
The S/UNI-2488 digital inputs are 3.3V tolerant. The SD digital input is 5V (TTL) tolerant.
Inputs ALE, RSTB, TMS, TDI and TRSTB have internal pull-up resistors.
It is mandatory that every digital ground pin (VSS) be connected to the printed circuit board ground plane to
It is mandatory that every digital power pin (VDD) be connected to the printed circuit board power plane to
All analog power and ground pins can be sensitive to noise. They must be isolated from the digital power
On power-up, all 3.3V power supplies (QAVD, AVDH, VDDO) must be on before the 1.8V supplies (AVDL
On power-down, all 1.8V power supplies (AVDL and VDDI) must be off before the 3.3V supplies (QAVD,
Due to ESD protection structures in the pads it is necessary to exercise caution when powering a device up
Follow recommendations in Section 16.3 for analog power supply filtering.
Do not exceed 100 mA of current on any pin during the power-up or power-down sequence.
Before any input activity occurs, ensure that the device power supplies are within their nominal voltage
Hold the device in the reset condition until the device power supplies are within their nominal voltage range.
TPOHRDY, TOHFP, TOHCLK, B3E, RPOHEN, RPOH, RTOH, ROHFP, ROHCLK, RALM, SALM, and
OOF
The S/UNI-2488 digital outputs and bidirectionals which have 12 mA drive capability are: APSOFP,
TCA/DTPA, RSX, RMOD[1:0], REOP, RERR, RCA/RVAL, RSOC/RSOP, RDAT[31:0], RPRTY, TCLK,
PGMTCLK, RCLK, and PGMRCLK.
The S/UNI-2488 digital outputs and bidirectionals which have 16 mA drive capability are: CRUCLKO
and CSUCLKO
ensure reliable device operation.
ensure reliable device operation.
and ground. Care must be taken to correctly decouple these pins. Please refer to the Operation
section.
and VDDI).
AVDH, VDDO).
or down. ESD protection devices behave as diodes between power supply pins and from I/O pins to
power supply pins. Under extreme conditions it is possible to damage these ESD protection devices or
trigger latch up. Please adhere to the recommended power supply sequencing listed in point numbers
9 and 10.
range.
S/UNI-2488 Telecom Standard Product Datasheet
Released
74