PM8313 datasheet(14/192 Pages) PMC

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PM8313 D3MX

DATA SHEET

PMC-920702

ISSUE 5

M13 MULTIPLEXER

• Maximum average reframe time of less than 7 ms (as required by TR-TSY-

000009 Section 4.1.2 and TR-TSY-000191 Section 5.2) for DS2 format and 1

ms for G.747 format.

• Allows forcing of reframe via an internal register.

• Detects the alarm indication signal in 9.9 ms in the presence of a 10-3 bit

error rate.

• Extracts the DS2 X-bit or G.747 remote alarm bit and indicates far end

receive failure.

• Accumulates error events over consecutive accumulation intervals as defined

by writes to internal registers.

• Accumulates up to 255 DS2 M-bit or F-bit error events per second.

Accumulates up to 255 G.747 framing bit or word (selectable) error events

per second.

• Accumulates up to 8191 G.747 parity error events per second.

• Optionally generates interrupts when various events or status changes occur.

• Performs required bit stuffing including generation of C-bits.

• Performs required bit destuffing including interpretation of C-bits.

• Includes required FIFO buffers for rate adaptation in the multiplex path.

• Allows per tributary alarm indication signal (AIS) to be activated or cleared for

either direction under microprocessor control.

DS2 Functionality

• Multiplexes four DS1 bit streams into a single M12 format DS2 bit stream.

• Performs required inversion of second and fourth multiplexed DS1 streams as

required by ANSI T1.107 Section 7.2.

• Allows insertion of per DS1 payload loopback requests encoded in the

transmitted C-bits to be activated or cleared under microprocessor control.

• Inserts X, F, and M bits into transmitted DS2 bit stream.

PM8313 датащи(PDF) 14 Page - PMC-Sierra, Inc