
Agere Systems Inc.
37
Advance Data Sheet, Rev. 2
July 2001
SONET/SDH x84/x63 Ultramapper
TMXF84622 155 Mbits/s/622 Mbits/s Interface
3 Pin Information
(continued)
Table 1. Pin Descriptions
(continued)
* O
1
indicates external pull-up recommended (unused or system required),
I/O
2
indicates external pull-down recommended (unused or system required),
I
D
; I/O
D
indicate internal pull-down,
I
U
indicates internal pull-up.
Transmit path convention is toward the high-speed fiber output. Note that CHIRX signals are labeled Receive, as seen from the cross connect
perspective.
Receive path convention is away from the high-speed fiber output. Note that CHITX signals are labeled Transmit, as seen from the cross con-
nect perspective.
Pin
Symbol
Type I/O
*
NSMI Transmit Path Direction (12)
—
I
NSMI Receive Data Inputs or STS-1 Receive Data Inputs
for STS1LTs.
—
I/O
NSMI Receive Clock Input (51.84 MHz) for FRM or Transmit
Clock Output for M13 or SPE.
These pins can also carry
STS-1 Rx clock inputs for STS1LTs.
—
I/O
NSMI Receive System Frame Sync Input for FRM or Trans-
mit Control Signal for M13 or SPE.
They may also carry
STS-1 transmit clock inputs for STS1LTs.
—
O
Receive Data Enable for NSMI Mode.
Description
AP28, AK24,
AK23
AJ24, AP27,
AP26
NSMIRXDATA[3:1]
NSMIRXCLK[3:1]
AN27, AN26,
AN25
NSMIRXSYNC[3:1]
AM27,
AM26, AJ23
RXDATAEN[3:1]
NSMI Receive Path Direction (12)
—
O
NSMI Transmit Data Outputs or STS-1 Tx Data Outputs
from STS1LTs.
—
O
NSMI Transmit Clock Output or STS-1 Tx Clock Outputs
from STS1LTs.
—
O
Transmit System Frame Sync Output.
AP31, AN28,
AJ25
AM29,
AP30, AP29
AN30, AN29,
AK26
AM30,
AK27, AJ26
NSMITXDATA[3:1]
NSMITXCLK[3:1]
NSMITXSYNC[3:1]
TXDATAEN[3:1]
—
O
Transmit Data Enable for NSMI Mode.