20
Agere Systems Inc.
TMXF28155 Supermapper
155/51 Mbits/s SONET/SDH x28/x21 DS1/E1
Data Sheet
June 2002
3 Pin Information
(continued)
Table 5. Telecom Bus (Low-Speed I/O) Pin Description
(continued)
Pin
Symbol
TLSDATAI[7:0]
Type
—
I/O
I/O
Description
W2, W1, W3, Y4,
Y2, Y1, Y3, AA4
Transmit Low-Speed Data [7:0].
This is a parallel data
bus. It is used to connect the upstream STS-1 signals from
the slave devices to the master device. In master mode,
TLSDATA is an input bus, 8 bits wide. It contains all the
transmit STS-1 data from the slave devices. In slave mode,
these pins are outputs and should be connected to the
TLSDATA[7:0] inputs on the master. TLSDATA contains
three byte-interleaved STS-1 time slots. The slot used by
each SPE mapper in the slaves and the master device is
determined by programing the SPE_TSTS3_TMSLOT reg-
ister bits.
Transmit Low-Speed Clock.
This is a 19.44 MHz or
6.48 MHz clock for the TLSDATA[7:0] bits. TLSCLK is an
output on a master Supermapper and an input on a slave.
AA2
TLSCLK
—
I/O
Note:
As outputs, these pins have 6 mA drive capability.
Transmit Low-Speed Parity.
This parity bit is generated
on the TLSDATA[7:0] bits output from slave devices and
input to the master Supermapper. May be configured for
odd or even parity generation or for checking.
Transmit Low-Speed SPE Marker.
High while the STS-1
payloads are present on the TLSDATA[7:0] bus. Low while
the STS-1 overhead is present on the TLSDATA[7:0] bus.
An output from the master and input on the slaves.
Transmit Low-Speed J0/J1/V1 Marker.
Transmit J0, J1,
or V1 timing indicator. High while the J0, J1, or V1 bits are
present on the TLSDATA[7:0] bus. An output on the master
and input on slaves.
Transmit Low-Speed V1 Marker 3.
Transmit V1 timing
indicator. High while the V1 bits are present on the
TLSDATA[7:0] bus. An output on the master and input on
slaves.
Receive Low-Speed Clock.
When in output (master)
mode, it is the receive side of the 51.84 MHz clock output,
synchronous to the receive high-speed input clock (data).
When in input (slave) mode, it receives a 51.84 MHz clock
input, synchronous to the receive high-speed input clock
(data).
AA3
TLSPAR
—
I/O
AB2
TLSSPE
—
I/O
AB4
TLSJ0J1V1
—
I/O
AB3
TLSV1
—
I/O
AC2
RLSC52
—
I/O
Note:
As outputs, these pins have 6 mA drive capability.
Receive Low-Speed Sync
. When in output (master) mode,
it is the receive side frame sync output synchronous to a
51.84 MHz output. When in input mode, it is the receive
side frame sync input synchronous to a 51.84 MHz input.
AC1
RLSSYNC52
—
I/O