DS26556_07 Datasheet, PDF (125/368 Pages) Maxim Integrated Products – 4-Port Cell/Packet Over T1/E1/J1 Transceiver

DS26556 4-Port Cell/Packet Over T1/E1/J1 Transceiver
Register Name:
Register Description:
Address (hex):
Bit #
Name
Default
7
TCEN7
0
TECC1
Transmit Errored Cell Control Register 1
1104, 1304, 1504, 1704
6
TCEN6
0
5
TCEN5
0
4
TCEN4
0
3
TCEN3
0
2
TCEN2
0
1
TCEN1
0
0
TCEN0
0
Bits 7 to 0 : Transmit Errored Cell Insertion Number (TCEN[7:0]) – These eight bits indicate the total number of
errored cells to be transmitted. A value of FFh results in continuous errored cell insertion at the specified rate.
Register Name:
Register Description:
Address (hex):
TECC2
Transmit Errored Cell Control Register 2
1105, 1305, 1505, 1705
Bit #
Name
Default
7
MEIMS
0
6
TCER6
0
5
TCER5
0
4
TCER4
0
3
TCER3
0
2
TCER2
0
1
TCER1
0
0
TCER0
0
Bit 7 : Manual Error Insert Mode Select (MEIMS) – When 0, the transmit manual error insertion signal (TMEI) will
not cause errors to be inserted. When 1, TMEI will cause an error to be inserted when it transitions from a 0 to a 1.
Note: Enabling TMEI does not disable error insertion using TCER[6:0] and TCEN[7:0].
Bits 6 to 0 : Transmit Errored Cell Insertion Rate (TCER[6:0]) – These seven bits indicate the rate at which
errored cells are to be output. One out of every x * 10^y cells is to be an errored cell. TCER[4:1] is the value x, and
TCER[6:4] is the value y which has a maximum value of 6. If TCER[4:1] has a value of 0h errored cell insertion is
disabled. If TCER[6:4] has a value of 6xh or 7xh the errored cell rate will be x * 10⁶. A TCER[6:0] value of 01h
results in every cell being errored. A TCER[6:0] value of 0Fh results in every 15^th cell being errored. A TCER[6:0]
value of 11h results in every 10^th cell being errored. Errored cell insertion starts when the TECC register is written
to with a TCER[4:1] value that is non-zero. If the TECC register is written to during the middle of an errored cell
insertion process, the current process is halted, and a new process will be started using the new values of
TCER[6:0] and TCEN[7:0}. Errored cell insertion ends when TCEN[7:0] errored cells have been transmitted.
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