IDT82P2288 Integrated Device Technology, Inc., IDT82P2288 Datasheet - Page 164

• Manufacturer Part Number: IDT82P2288
• Description: 8 Channel T1/J1/E1 Transceiver
• Manufacturer: Integrated Device Technology, Inc.

IDT82P2288
T1/J1 FRMR Mode 1 (04EH, 14EH, 24EH, 34EH, 44EH, 54EH, 64EH, 74EH)
DDSC:
synchronization is acquired.
Pattern are all detected, and there is no mimic pattern, the T1 DM synchronization is acquired.
MIMICC:
ence of mimic patterns is ignored.
case, the existence of mimic patterns is ignored.
chronized.
M2O[2:1]:
of synchronization.
Exceeding the threshold will lead to out of synchronization.
consists of the 6-bit DDS pattern and its following F-bit. Exceeding the threshold will lead to out of synchronization.
sliding Fs bits in Frame (2n) (0<n<12 and n=36) window. Exceeding the threshold will lead to out of synchronization.
Programming Information
Bit Name
Default
Bit No.
Type
This bit selects the synchronization criteria of T1 DM format.
= 0: If a correct DDS pattern is received before the first F-bit of a single correct Frame Alignment Pattern and there is no mimic pattern, the T1 DM
= 1: If a single correct Frame Alignment Pattern is received, and twelve correct DDS patterns before each F-bit of the correct Frame Alignment
This bit selects the synchronization criteria in SF format and ESF format.
In SF format:
= 0: When two consecutive Frame Alignment Patterns are received error free in the data stream, the SF is synchronized. In this case, the exist-
= 1: When two consecutive Frame Alignment Patterns are received error free in the data stream without mimic pattern, the SF is synchronized.
In ESF format:
= 0: When a single correct Frame Alignment Pattern and a single correct CRC-6 are found in the same frame, the ESF is synchronized. In this
= 1: When four consecutive Frame Alignment Patterns are detected error free in the received data stream without mimic pattern, the ESF is syn-
In SF format, these two bits define the threshold of the F Bit Error numbers in N-bit sliding F bits window. Exceeding the threshold will lead to out
In ESF format, these two bits define the threshold of the Frame Alignment Bit Error numbers in N-bit sliding Frame Alignment bits window.
In T1 DM format, these two bits define the threshold of the 7-bit pattern error numbers in N-pattern sliding 7-bit patterns window. The 7-bit pattern
In SLC-96 format, these two bits define the threshold of the Ft bit error numbers in N-bit sliding Ft bits window or the Fs bit error numbers in N-bit
7
M2O[1:0]
6
0 0
0 1
1 0
1 1
Reserved
5
Error Numbers
4
153
2
2
2
OCTAL T1/E1/J1 LONG HAUL / SHORT HAUL TRANSCEIVER
DDSC
Reserved
R/W
3
0
N-Bit/Pattern Sliding Window
MIMICC
R/W
2
0
4
5
6
M2O1
R/W
1
0
March 22, 2004
M2O0
R/W
0
0