PM7345 datasheet(53/306 Pages) PMC

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PM7345 S/UNI-PDH

DATA SHEET

PMC-931011

ISSUE 6

SATURN USER-NETWORK INTERFACE

PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE

A[7]

A[6]

A[5]

A[4]

A[3]

A[2]

A[1]

A[0]

Input

Address Bus (A[7:0]).

The address bus (A[7:0)

selects specific registers during accesses.

VDDO[0]

VDDO[1]

VDDO[2]

VDDO[3]

Power

Pad Ring Power (VDDO[3:0]). These pins must be

connected to a common, well decoupled +5 VDC

supply together with the VDDI[2:0] pins. Care must

be taken to avoid coupling noise induced on the

VDDO pins into the VDDI pins.

VDDI[0]

VDDI[1]

VDDI[2]

Power

n/a

Core Power (VDDI[2:0]). These pins must be

connected to a common, well decoupled +5 VDC

supply together with the VDDO[3:0] pins.

VSSO[0]

VSSO[1]

VSSO[2]

VSSO[3]

VSSO[4]

Ground

n/a

Pad Ring Ground (VSSO[4:0]). These pins must

be connected to a common ground together with

the VSSI[2:0] pins. Care must be taken to avoid

coupling noise induced on the VSSO pins into the

VSSI pins.

VSSI[0]

VSSI[1]

VSSI[2]

Ground

n/a

Core Ground (VSSI[2:0]). These pins must be

connected to a common ground together with the

VSSO[4:0] pins.

Notes on Pin Description:

1. Most S/UNI-PDH inputs and bidirectionals present minimum capacitive loading

and operate at TTL logic levels. The high speed inputs, RCLK, RPOS/RDAT,

RNEG/ROHM, TICLK, C13/CADD, and TIOHM inputs operate at CMOS logic

levels. The ALE, RSTB, TSEN, TDLSIG, TXPRTY, and SYFIFOB inputs have

pullups. The RRDENB and TWRENB inputs have integral pull-down resistors.

RSTB uses a schmitt trigger input.

2. The TCLK, TPOS/TDAT, TNEG/TOHM, RSOC, REOH, REOC, RFIFOE,

TFIFOFB outputs, and the FRDATA[7:0] and RXPRTY tristate outputs have non

slew-rate limited 2 mA drive capability. The D[7:0] bidirectionals and INTB have

4 mA slew-rate limited drive capability. All other S/UNI-PDH digital outputs have

2 mA slew-rate limited drive capability.

PM7345 Datasheet(PDF) 53 Page - PMC-Sierra, Inc

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