XRT94L33IB-L Exar Corporation, XRT94L33IB-L Datasheet - Page 230

• Manufacturer Part Number: XRT94L33IB-L
• Description: IC MAPPER DS3/E3/STS-1 504TBGA
• Manufacturer: Exar Corporation

Specifications of XRT94L33IB-L

• Applications: Network Switches
• Interface: Bus
• Voltage - Supply: 3.14 V ~ 3.47 V
• Package / Case: 504-LBGA
• Mounting Type: Surface Mount
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

XRT94L33
Rev.1.2.0.
The details and instructions for using either of these features are presented below.
2.2.7.3.4.1
The XRT94L33 permits the user to configure each of the four (4) Transmit STS-3c POH Processor blocks to
automatically set the contents of the J1 byte (within each outbound STS-3c SPE) to “0x00”.
The user can accomplish this by writing the value “[0, 0]” into Bits 1 and 0 (J1 Type[1:0]) within the
appropriate “Transmit STS-3c Path – Transmit J1 Control” Register; as depicted below.
Transmit STS-3c Path – Transmit J1 Control” Register (Address = 0x19BB)
Once the user executes this step, then the corresponding Transmit STS-3c POH Processor block(s) will be
configured to automatically set the J1 byte (within each outbound STS-3c SPE) to the value “0x00”.
2.2.7.3.4.2
The XRT94L33 contains a total of four (4) “Transmit Path Trace Message Buffers (one for each “Transmit
STS-3c POH Processor Block, within the device).
The address location of the “Transmit Path Trace Message” buffer, for each of the four Transmit STS-3c POH
Processor blocks is presented below.
Table 14: Address Locations of the Transmit Path Trace Message Buffers within the XRT94L33
If the user wishes to use the “Path Trace Message” buffer as the means to load and transmit the “Path Trace
Message” to the remote PTE, the following steps must be executed.
STEP 1 – Write the contents of this outbound “Path Trace Message” into the “Transmit Path Trace
Message” buffer.
As the user writes the contents of the “outbound” Path Trace Message” into the “Transmit Path Trace”
Message buffer they must make sure that the first byte of the message is written into Address location
0xNC00 (e.g., the very first address location of the “Transmit Path Trace Message” buffer).
T
B
R/O
RANSMIT
IT
0
7
STS-3
Automatically setting the J1 byte (within each outbound STS-3c SPE) to “0x00”
Using the “Transmit Path Trace Message” Buffer
B
C
R/O
IT
0
POH P
6
Unused
ROCESSOR
0
1
2
3
B
R/O
IT
0
3-CHANNEL DS3/E3/STS-1 TO STS-3/STM-1 MAPPER IC DATA SHEET
5
B
LOCK
- C
HANNEL
B
R/O
IT
0
4
230
A
J1 Message Length[1:0]
DDRESS
B
R/W
IT
X
3
L
OCATION OF THE
B
R/W
0x1D00 – 0x1D3F
0x2D00 – 0x2D3F
0x3D00 – 0x3D3F
0x4D00 – 0x4D3F
IT
X
2
B
T
UFFER
RANSMIT
B
R/W
IT
0
P
ATH
1
xr
J1 Type[1:0]
T
RACE
M
B
R/W
ESSAGE
IT
0
0