PM5347 datasheet(44/302 Pages) PMC

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PM5347 S/UNI-PLUS

DATA SHEET

PMC-941033

ISSUE 6

SATURN USER NETWORK INTERFACE PLUS

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

Pin Name

Type

No.

Function

RTOH

Output

168

The receive transport overhead output (RTOH)

contains the receive transport overhead bytes

(A1, A2, J0/Z0, B1, E1, F1, D1-D3, H1-H3, B2,

K1, K2, D4-D12, S1/Z1, M0 or M1/Z2, and E2)

extracted from the receive stream. RTOH is

updated on the falling edge of RTOHCLK.

RTOHCLK

Output

164

The receive transport overhead clock (RTOHCLK)

is nominally a 5.184 MHz clock (STM-1/STS-3c)

or a 1.728 MHz clock (STS-1) which provides

timing to process the extracted receive transport

overhead. When STS-3c (STM-1) mode is

selected, RTOHCLK is a gapped 6.48 MHz clock.

When STS-1 mode is selected, RTOHCLK is a

gapped 2.16 MHz clock. RTOHCLK is updated on

the falling edge of GROCLK.

RTOHFP

Output

167

The receive transport overhead frame position

(RTOHFP) signal is used to locate the individual

receive transport overhead bits in the transport

overhead output, RTOH. RTOHFP is set high

while bit 1 (the most significant bit) of the first

framing byte (A1) is present in the RTOH stream.

RTOHFP is updated on the falling edge of

RTOHCLK.

RPOH

Output

171

The receive path overhead data (RPOH) signal

contains the path overhead bytes (J1, B3, C2, G1,

F2, H4, Z3, Z4, and Z5) extracted from the

received STS-3c/1 frame. RPOH is updated on

the falling edge of RPOHCLK.

RPOHCLK

Output

169

The receive path overhead clock (RPOHCLK) is

nominally a 576 kHz clock which provides timing

to process the extracted receive path overhead.

RPOHCLK is a gapped 648 KHz clock.

RPOHCLK is updated on the falling edge of

GROCLK.

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