XRT94L33IB-L Exar Corporation, XRT94L33IB-L Datasheet - Page 191

• 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

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3-CHANNEL DS3/E3/STS-1 TO STS-3/STM-1 MAPPER IC DATA SHEET
STEP 4 – Write the very first 32-bit word of this new ATM cell into the “Transmit Cell Insertion Buffer”.
This is accomplished by executing the following four sub-steps.
STEP 4a - Write the contents of first byte (of this new ATM cell) into the Transmit ATM Cell –
Insertion/Extraction Memory Register – Byte 3; as depicted below.
Transmit ATM Cell – Insertion/Extraction Memory Register – Byte 3 (Address = 0xNF14)
Note:
STEP 4b – Write the contents of the second byte (of this new ATM cell) into the Transmit ATM Cell –
Insertion/Extraction Memory Register – Byte 2; as depicted below.
Transmit ATM Cell – Insertion/Extraction Memory Register – Byte 2 (Address = 0xNF15)
Note:
STEP 4c – Write the contents of the third byte (of this new ATM cell) into the Transmit ATM Cell –
Insertion/Extraction Memory Register – Byte 1; as depicted below.
Transmit ATM Cell – Insertion/Extraction Memory Register – Byte 2 (Address = 0xNF16)
Note:
B
B
B
R/W
R/W
R/W
C7
A7
B7
IT
IT
IT
7
7
7
In this case, the contents of the first byte (within this ATM cell) is of the value [A7, A6, A5, A4, A3, A2, A1, A0]
In this case, the contents of the second byte (within this ATM cell) is of the value [B7, B6, B5, B4, B3, B2, B1, B0]
In this case, the contents of the second byte (within this ATM cell) is of the value [C7, C6, C5, C4, C3, C2, C1,
C0]
B
B
B
R/W
R/W
R/W
A6
B6
C6
IT
IT
IT
6
6
6
B
B
B
R/W
R/W
R/W
C5
A5
B5
IT
IT
IT
5
5
5
Insertion/Extraction Memory Data[31:24]
Insertion/Extraction Memory Data[23:16]
Insertion/Extraction Memory Data[15:8]
B
B
B
R/W
R/W
R/W
A4
B4
C4
IT
IT
IT
4
4
4
191
B
B
B
R/W
R/W
R/W
C3
A3
B3
IT
IT
IT
3
3
3
B
B
B
R/W
R/W
R/W
A2
B2
C2
IT
IT
IT
2
2
2
B
B
B
R/W
R/W
R/W
A1
B1
C1
IT
IT
IT
1
1
1
XRT94L33
Rev.1.2.0.
B
B
B
R/W
R/W
R/W
C0
A0
B0
IT
IT
IT
0
0
0