DATA SHEET
PMC-920702
ISSUE 5
PM8313 D3MX
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.
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