PM7346 datasheet(55/419 Pages) PMC

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PM7346 S/UNI-QJET

DATASHEET

PMC-960835

ISSUE 6

SATURN QUAD USER NETWORK INTERFACE FOR J2, E3, T3

PMC-SIERRA, INC. PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA INC., AND ITS CUSTOMERS’ INTERNAL USE 34

Pin Name

Type

Pin No.

Function

TFPI[4]

TFPI[3]

TFPI[2]

TFPI[1]

TMFPI[4]

TMFPI[3]

TMFPI[2]

TMFPI[1]

Input

W15

V12

Framer Transmit Frame Pulse/Multiframe

Pulse (TFPI/TMFPI[4:1]). TFPI/TMFPI[4:1]

is valid when the S/UNI-QJET is

configured as a DS3, E3, or J2 framer for

non-ATM applications by setting the

FRMRONLY bit in the S/UNI-QJET

Configuration 1 Register to logic 1.

TFPI[4:1] indicates the position of all

overhead bits in each DS3 M-subframe,

the first bit in each G.751 E3 or G.832 E3

frame, or the first framing bit in each J2

frame. TFPI[4:1] is not required to pulse at

every frame boundary in E3 or J2 modes.

TMFPI[4:1] indicates the position of the

first bit in each DS3 M-frame, the first bit in

each E3 frame, or the first framing bit in

each J2 multiframe. TMFPI[4:1] is not

required to pulse at every multiframe

boundary.

TFPI/TMFPI[4:1] is sampled on the rising

edge of TICLK[4:1].

TICLK[4]

TICLK[3]

TICLK[2]

TICLK[1]

Input

V15

Y13

Transmit Input Clock (TICLK[4:1]).

TICLK[4:1] provides the transmit direction

timing. TICLK[4:1] is the externally

generated transmission system baud rate

clock. It is internally buffered to produce

the transmit clock output, TCLK[4:1], and

can be enabled to update the

TPOS/TDATO[4:1] and TNEG/TOHM[4:1]

outputs on the TICLK[4:1] rising edge. The

TICLK[4:1] maximum frequency is 52

MHz.

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