![](http://datasheet.mmic.net.cn/330000/PM6344-RI_datasheet_16444359/PM6344-RI_25.png)
STANDARD PRODUCT
PMC-Sierra, Inc.
PM6344 EQUAD
PMC-951013
ISSUE 5
QUADRUPLE E1 FRAMER
12
7
PIN DESCRIPTION
Pin Name
Type
Pin No.
Function
MENB
Input
45
Multiplex Enable (MENB). When this input is asserted
low, the four sets of PCM and signaling streams are
combined into a single bit interleaved 16.384 Mbit/s
serial stream. In the transmit direction, all data is
expected on MTD with alignment indicated by MTFP
MTD and MTFP are sampled on the rising edge of
MTCLK. In the receive direction, data is presented on
MRD aligned with MRFPI. MRFPI is sampled on the
rising edge of MRCLK and MRD is updated on the
falling edge of MRCLK.
When this input is deasserted high, each PCM and
signaling stream has its own dedicated pin.
MENB has an integral pull-up.
RDP[1]
RDP[2]
RDP[3]
RDP[4] /
Input
2
5
8
11
Receive Positive Line Pulse (RDP[4:1]). These inputs
are available when the EQUAD is configured to receive
dual-rail formatted data. The RDP[4:1] inputs may be
enabled for either RZ or NRZ waveforms. When
enabled for NRZ, this input may be enabled to be
sampled on the rising or falling edge of the
corresponding RCLKI[4:1]. When enabled for RZ, the
clocks are recovered from the corresponding RDP[4:1]
and RDN[4:1] inputs.
RDD[1]
RDD[2]
RDD[3]
RDD[4]
Receive Digital E1 Signal (RDD[4:1]). When the
EQUAD is configured to receive single-rail data, these
inputs may be enabled to be sampled on the rising or
falling edge of the corresponding RCLKI[4:1].