TMXF28155/51 Super Mapper
155/51 Mbits/s SONET/SDH x28/x21 DS1/E1
Preliminary Data Sheet
May 2001
538
Agere Systems Inc.
21 28-Channel Framer Block Functional Description
(continued)
I
LINERXCLK29 (B13)
—
Output of the
switch
, which is the LINETXCLK29, delayed.
I
LINERXDATA29 (D13)
—
Serial data sent out of the switch. The MSB is sent out first and at the same time, the
first bit (start bit) of the LINE_RXSYNC29 is sent out.
I
LINERXSYNC29 (A13)
—
The control data, otherwise known as the serial ID (SID), is generated by the
switch
.
I
LINETXCLK29 (R24)
—
Clock signal generated by the Super Mapper.
I
LINETXDATA29 (T23)
—
Serial data sent out of the Super Mapper. The MSB is sent out first and at the same time
the first bit (start bit) of the LINETXSYNC29 is sent out.
I
LINETXSYNC29 (R26)
—
The control data, otherwise known as the serial ID (SID), is generated by the Super
Mapper.
I
RXDATAEN (AB19)
—
Clock signal generated by the Super Mapper.
I
TXDATAEN (W22)
—
The control data, otherwise known as the serial ID (SID), is generated by the Super Mapper.
21.27.3 Timing Diagrams
I
Single Octet
—
Data is sent out on the LINETXDATA29 (T23) line serially with the MSB of the data first. The MSB is driven at
the same time the START bit of the LINETXSYNC29 (R26) signal is driven.
—
Following the START bit, the FSYNC bit of the SID is driven. After the FSYNC bit, the LSB of the LINKNUMBER
is sent. Once the MSB of the LINKNUMBER is driven, the final bit of the SID is sent. This final bit is a reserved
bit and must be 0.
5-8990(F)r.2
Figure 79. Network Serial Multiplexed Interface (Single Octet)
Table 607. Serial ID
I
Multiple Octets
—
Single octets of data can be sent out consecutively. Any number of clocks can separate octets. During the time
when octets are separated, the LINETXSYNC29 line must be driven with a 1.
Name
START
Bit
0
Description
Start Bit.
0 = Start an octet. Bits 1 to 7 follow.
1 = Do not start an octet. Next bit is another bit 0.
Frame Sync Bit.
Indicates whether the current byte corresponds to the first
byte in the frame or not.
0 = Not the first byte.
1 = First byte.
Link Number.
These bits indicate the link number of received/transmitted
data.
Reserved.
Must write to 0.
FSYNC
1
LINKNUMBER[5:0]
6:2
—
7
START
fSYNC
LINKNUMBER[5:0]
SERIAL DATA
MSB
LSB
LSB
MSB
LINETXCLK29
LINETXDATA29
LINETXSYNC29
RESERVED