PM5366-PI datasheet(58/267 Pages) PMC

58 / 267 page

PRELIMINARY

PM5366 TEMAP-84

DATASHEET

PMC-2010672

ISSUE 1

HIGH DENSITY 84/63 CHANNEL VT/TU MAPPER

AND M13 MULTIPLEXER

PROPRIETARY AND CONFIDENTIAL

Pin Name

Type

No.

Function

CLK52M

Input

AB10 52 MHz Clock Reference (CLK52M). The 52Mhz

clock reference is used to generate a gapped DS3

clock when demapping a DS3 from the SONET stream

and also to generate a gapped DS3/E3 clock when

receiving a DS3/E3 from the SBI bus interface. This

clock has two nominal values.The first is a nominal

51.84 MHz 50% duty cycle clock. The second is a

nominal 44.928 MHz 50% duty cycle clock. The

expected frequency is determined by the

FASTCLKFREQ bit of the SONET/SDH Master DS3

Clock Generation Control register. If E3 data rates are

being supported, CLK52M must be 51.84MHz.

Scaleable Bandwidth Interconnect Interface

CTCLK

Input

F19 Common Transmit Clock (CTCLK). This input signal

is used as a reference transmit tributary clock which

can be used in egress Clock Master modes. CTCLK

must be multiple of 8 kHz. The transmit clock is

derived by the jitter attenuator PLL using CTCLK as a

reference.

The TEMAP may be configured to ignore the CTCLK

input and lock to the data or one of the recovered

Ingress clocks instead, RECVCLK1, RECVCLK2 and

RECVCLK3. The receive tributary clock is

automatically substituted for CTCLK if line loopback or

looptiming is enabled.

SREFCLK

Input

C10 System Reference Clock (SREFCLK). This system

reference clock is a nominal 19.44 MHz +/-50ppm or

77.76 MHz +/-50ppm 50% duty cycle clock. This clock

is common to both the add and drop sides of the SBI

bus.

SREFCLK must be active for all applications, except

DS3/E3 framer only mode when the system interface is

serial clock and data. When the SYSOPT register bits

are binary 01 (H-MVIP interface), SREFCLK is

required to be 19.44 MHz.

When passing transparent virtual tributaries between

the telecom bus and the SBI bus, SREFCLK must be

the same as LREFCLK.

PM5366-PI Datasheet(PDF) 58 Page - PMC-Sierra, Inc

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