PM4354-PI datasheet(71/463 Pages) PMC

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RELEASED

PM4354 COMET-QUAD

DATASHEET

PMC-1990315

ISSUE 6

FOUR CHANNEL COMBINED E1/T1/J1

TRANSCEIVER / FRAMER

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

In Transmit Clock Slave: Full T1/E1 mode, the backplane transmit interface is clocked by the

backplane transmit clock (BTCLK[x]). The transmitter is either frame-aligned or superframe-

aligned to the backplane transmit frame pulse (BTFP[x]). BTFP[x] is configurable to indicate the

frame alignment or the superframe alignment of BTPCM[x]. BTSIG[x] contain the signaling data to

be inserted into Transmit Data[x], with the four least significant bits of each channel on BTSIG[x]

representing the signaling state (ABCD or ABAB). BTCLK[x] can be enabled to be either a 1.544

MHz clock for T1 links or a 2.048 MHz clock for T1 and E1 links.

Figure 19:

- Transmit Clock Slave: Clear Channel

TJAT

FIFO

TRANSMITTER

Transmit Data[1:4]

BTCLK[1:4]

BTPCM[1:4]

TJAT

Digital PLL

Transmit CLK[1:4]

BTPCM[x] Timed

to BTCLK[x]

BTIF

Backplane

Transmit

System

Interface

In Transmit Clock Slave: Clear Channel mode, the backplane transmit interface is clocked by the

externally provided backplane transmit clock (BTCLK[x]). BTCLK[x] must be a 1.544 MHz clock

for T1 links or a 2.048 MHz clock for E1 links. The Transmit Clock[x] is a jitter attenuated version

of BTCLK[x].

Figure 20:

- Transmit Clock Slave: H-MVIP

CMV8MCLK

CMVFPC

MVBTD

CCSBTD

Inputs Timed

to CMV8MCLK

CMVFPB

CASBTD

TJAT

FIFO

T1-XBAS/E1-TRAN

BasicTransmitter:

Frame Generation,

Alarm Insertion,

Signaling Insertion,

Trunk Conditioning

Line Coding

TRANSMITTER

Transmit Data[1:4]

TJAT

Digital PLL

Transmit CLK[1:4]

BTIF

Backplane

Transmit

System

Interface

When Transmit Clock Slave: H-MVIP mode is enabled, a 8.192 Mbit/s H-MVIP backplane transmit

interface multiplexes up to 128 channels from 4 T1’s or E1’s, up to 128 Channel Associated

Signaling (CAS) channels from 4 T1’s or E1’s and Common Channel Signaling (CCS) from up to

4 T1’s or E1’s. The H-MVIP interface uses common clocks, CMV8MCLK and CMVFPC, and

frame pulse, CMVFPB, for synchronization.

The H-MVIP data signal, MVBTD, provides H-MVIP access to 128 data channels.

A separate H-MVIP signal, CASBTD, provides access to the Channel Associated Signaling (CAS)

for 128 channels. The CAS H-MVIP signal is time division multiplexed exactly the same way as

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