PM6344 datasheet(36/256 Pages) PMC

36 / 256 page

STANDARD PRODUCT

PMC-Sierra, Inc.

PM6344 EQUAD

PMC-951013

ISSUE 5

QUADRUPLE E1 FRAMER

Pin Name

Type

Pin No.

Function

TDLCLK[1]

TDLCLK[2]

TDLCLK[3]

TDLCLK[4]/

Output

109

110

111

112

Transmit Data Link Clock (TDLCLK[4:1]). The

TDLCLK[4:1] signals are available on this output when

the associated internal HDLC transmitter (XFDL) is

disabled from use, or if fractional E1 insertion is

selected. The rising edge of TDLCLK[x] is used to

sample the data-link or fractional E1 data stream

contained on the associated TDLSIG[x] input. When the

EQUAD is not configured to transmit a data link and

fractional E1 is disabled, the TDLCLK[x] output is held

low.

TDLUDR[1]

TDLUDR[2]

TDLUDR[3]

TDLUDR[4]

Transmit Data Link Underrun (TDLUDR[4:1]). The

TDLUDR[4:1] signals are available on this output when

the associated XFDL is enabled. TDLUDR[x] goes high

when the processor has failed to service the TDLINT[x]

interrupt before the transmit buffer is emptied.

TCLKO[1]

TCLKO[2]

TCLKO[3]

TCLKO[4]

Output

Transmit Clock Output (TCLKO[4:1] ). The TDP[4:1],

TDN[4:1], and TDD[4:1] outputs may be enabled to be

updated on the rising or falling edge of the TCLKO[4:1]

outputs. TCLKO[x] is a 2.048 MHz clock that is

adequately jitter and wander free in absolute terms to

permit an acceptable E1 signal to be generated.

Depending on the configuration of the EQUAD,

TCLKO[x] may be derived from TCLKI[x], RCLKO[x], or

BTCLK[x], with or without jitter attenuation.

TDP[1]

TDP[2]

TDP[3]

TDP[4] /

Output

Transmit Digital Positive Line Pulse (TDP[4:1]). These

signals are available on the output when the EQUAD is

configured to transmit dual-rail data. The TDP[x] signal

can be formatted for either RZ or NRZ waveforms, and

can be enabled to be updated on the rising or falling

edge of the associated TCLKO[x].

TDD[1]

TDD[2]

TDD[3]

TDD[4]

Transmit Digital Data (TDD[4:1]). These signals are

available on the output when configured to transmit

single-rail data. The TDD[x] signal may be enabled to

be updated on the rising or falling edge of the

associated TCLKO[x].

PM6344 Datasheet(PDF) 36 Page - PMC-Sierra, Inc

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