PM7340 S/UNI-IMA-8
PRELIMINARY
INVERSE MULTIPLEXING OVER ATM
DATA SHEET
PMC-2001723
ISSUE 3
INVERSE MULTIPLEXING OVER ATM
Pin Name
Type
Output
Pin No. Function
TSDATA[7]
TSDATA[6]
TSDATA[5]
TSDATA[4]
TSDATA[3]
TSDATA[2]
TSDATA[1]
TSDATA[0]
H4
J3
J2
J1
J4
K2
K1
K4
The Transmit Serial Data (TSDATA[7:0]) signals
contain the transmit data for the 8 independently
timed links. For channelized links, TSDATA[n]
contains the 24 (T1) or 31 (E1) time-slots that
comprise the channelized link. TSCLK[n] must be
gapped during the T1 framing bit position or the
E1 frame alignment signal (time-slot 0). The
S/UNI-IMA-8 uses the location of the gap to
determine the channel alignment on TSDATA[n].
For unchannelized links, TSDATA[n] contains the
ATM cell data. For certain transmission formats,
TSDATA[n] may contain place holder bits or time-
slots. TSCLK[n] must be externally gapped
during the place holder positions in the
TSDATA[n] stream.
The TSDATA[7:0] output signals are updated on
the falling edge of the corresponding TSCLK[7:0]
clock
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
32
PMC [ PMC-SIERRA, INC ]
