txc-03456 TranSwitch Corporation, txc-03456 Datasheet - Page 85

• Manufacturer Part Number: txc-03456
• Description: Device Level Mapper
• Manufacturer: TranSwitch Corporation

Address
80 to BF
6C
6D
6B
6E
6F
7-0
7-0
7-0
7-0
7-0
7-0
Bit
Symbol
H4
F2
Z3
Z4
Z5
J1
User Channel: When control bit EXF2 is a 0, the bits written into this loca-
tion are transmitted as the F2 byte. When control bits EXF2 and POHRAM
are a 1, the external POH interface F2 byte is written into this location, and is
also transmitted. When control bit EXF2 is a 1, and POHRAM is a 0, the
external POH interface F2 byte is transmitted and this location holds the
microprocessor-written F2 value. Bit 7 in this location corresponds to bit 1 in
the transmitted F2 byte.
H4 Byte: When control bit EXH4 is a 0, the bits written into this location are
transmitted as the H4 byte. When control bits EXH4 and POHRAM are a 1,
the external POH interface H4 byte is written into this location, and is also
transmitted. When control bit EXH4 is a 1, and POHRAM is a 0, the external
POH interface H4 byte is transmitted and this location holds the micropro-
cessor-written H4 value. Bit 7 in this location corresponds to bit 1 in the
transmitted H4 byte.
Z3 Byte: When control bit EXZ3 is a 0, the bits written into this location are
transmitted as the Z3 byte. When control bits EXZ3 and POHRAM are a 1,
the external POH interface Z3 byte is written into this location, and is also
transmitted. When control bit EXZ3 is a 1, and POHRAM is a 0, the external
POH interface Z3 byte is transmitted and this location holds the microproces-
sor-written Z3 value. Bit 7 in this location corresponds to bit 1 in the transmit-
ted Z3 byte.
Z4 Byte: When control bit EXZ4 is a 0, the bits written into this location are
transmitted as the Z4 byte. When control bits EXZ4 and POHRAM are a 1,
the external POH interface Z4 byte is written into this location, and is also
transmitted. When control bit EXZ4 is a 1, and POHRAM is a 0, the external
POH interface Z4 byte is transmitted and this location holds the microproces-
sor-written Z4 value. Bit 7 in this location corresponds to bit 1 in the transmit-
ted Z4 byte.
Z5 Byte: When control bit EXZ5 is a 0, the bits written into this location are
transmitted as the Z5 byte. When control bits EXZ5 and POHRAM are a 1,
the external POH interface Z5 byte is written into this location, and is also
transmitted. When control bit EXZ5 is a 1, and POHRAM is a 0, the external
POH interface Z5 byte is transmitted and this location holds the microproces-
sor-written Z5 value. Bit 7 in this location corresponds to bit 1 in the transmit-
ted Z5 byte.
Path Trace Message: The bytes written into this memory segment (16 or 64
bytes determined by the CCITT control bit) will provide a repetitive 64-or 16-
byte fixed length message for transmission. The 16-byte message is
allocated to the 80 to 8FH segment. The remaining segment 90 to BFH is not
used. The starting address is not set for transmission. The message is
transmitted in a rotating fashion. When control bit EXJ1 is a 0, the bits
written into these locations are transmitted as the J1 byte stream. When
control bits EXJ1 and POHRAM are a 1, the external POH interface J1 bytes
are written into these locations, and are also transmitted. When control bit
EXJ1 is a 1, and POHRAM is a 0, the external POH interface J1 bytes are
transmitted and this location holds the microprocessor-written J1 values.
Bit 7 in this location corresponds to bit 1 in the transmitted J1 byte.
DATA SHEET
- 85 -
Description
Ed. 1A, January 2000
TXC-03456
TXC-03456-MB
L4M