tmxf28155 ETC-unknow, tmxf28155 Datasheet - Page 16

• Manufacturer Part Number: tmxf28155
• Description: Tmxf28155 Super Mapper 155/51 Mbits/s Sonet/sdh X28/x21 Ds1/e1
• Manufacturer: ETC-unknow

155/51 Mbits/s SONET/SDH x28/x21 DS1/E1
3 Pin Information
3.3.2 Protection Switch I/O Pin Description
The protection switch I/O provides additional copies of the high-speed interface signals so that various protection
schemes may be implemented. The protection interface may be used when the high-speed interface is operating in
both STS-3 and STS-1 modes. If the protection port is not used, the input clock and data may be left unconnected,
tied to power (P inputs), or ground (N inputs) through 1 k resistors. Unused protection outputs should be left
unconnected.
Table 4. Protection Switch I/O Pin Description
3.3.3 Telecom Bus (Low-speed I/O) Pin Description
The telecom bus on the Super Mapper is used for interconnecting STS-1 signals. It has two eight-bit data buses,
one for upstream data and one for downstream data, plus clock and frame indication signals for each bus. The tele-
com bus can operate at 19.44 MHz (space for three STS-1 signals) or 6.48 MHz (space for 1 STS-1 signal).
Super Mappers in OC-3 applications are typically connected together using the telecom bus, and the bus is config-
ured to operate at 19.44 MHz.
16
AD10,
AC10,
AF13,
AC12,
AE10
AD11
AE13
AD13
Pin
RPSD155N
RPSC155N
RPSD155P
RPSC155P
TPSD155N
TPSC155N
TPSD155P
TPSC155P
Symbol
HIGH-SPEED
PROTECTION
INPUTS
RPSMUXSEL1
(continued)
LVDS
LVDS
LVDS
LVDS
Type
I/O
O
O
I
I
STS-3 RECEIVE
FRAMER
Receive Protection Data. Receive side high-speed serial data input
from protection board.
Receive Protection Clock. Receive side high-speed clock input from
protection board.
Transmit Protection Data. Transmit side high-speed serial data output
to protection board.
Transmit Protection Clock. Transmit side high-speed clock output to
protection board.
Figure 3. Protection Switch
HIGH-SPEED I/O
STS-3 TRANSMIT
FRAMER
Description
TPSMUXSEL2
HIGH-SPEED
PROTECTION
OUTPUTS
TPSMUXSEL3
Agere Systems Inc.
May 2001