xrt94l33 Exar Corporation, xrt94l33 Datasheet - Page 197

• Manufacturer Part Number: xrt94l33
• Description: Multi-channel, Multi-function Device Aggregates 3 Ds3/e3/sts-1 Into Oc3/stm-1
• Manufacturer: Exar Corporation

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3-CHANNEL DS3/E3/STS-1 TO STS-3/STM-1 MAPPER IC DATA SHEET
Transmit ATM Cell – Insertion/Extraction Memory Register – Byte 3 (Address = 0xNF14)
Note:
STEP 3b – Read the contents of the second byte (of this new ATM cell) from 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 3c – Read the contents of the third byte (of this new ATM cell) from 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:
STEP 3d – Read the contents of the fourth byte (of this new ATM cell) from the Transmit ATM Cell –
Insertion/Extraction Memory Register – Byte 0; as depicted below.
Transmit ATM Cell – Insertion/Extraction Memory Register – Byte 2 (Address = 0xNF17)
Note:
STEP 4 – Continue to read out the contents of the remaining bytes of this ATM cell from the “Transmit
Cell Extraction Memory”.
This is accomplished by executing the procedure, outlined in STEP 3, repeatedly for 13 more times.
B
B
B
B
R/W
R/W
R/W
R/W
C7
D7
A7
B7
IT
IT
IT
IT
7
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,
In this case, the contents of the second byte (within this ATM cell) is of the value [D7, D6, D5, D4, D3, D2, D1,
C0]
D0]
B
B
B
B
R/W
R/W
R/W
R/W
A6
B6
C6
D6
IT
IT
IT
IT
6
6
6
6
B
B
B
B
R/W
R/W
R/W
R/W
C5
D5
A5
B5
IT
IT
IT
IT
5
5
5
5
Insertion/Extraction Memory Data[31:24]
Insertion/Extraction Memory Data[23:16]
Insertion/Extraction Memory Data[15:8]
Insertion/Extraction Memory Data[7:0]
B
B
B
B
R/W
R/W
R/W
R/W
A4
B4
C4
D4
IT
IT
IT
IT
4
4
4
4
197
B
B
B
B
R/W
R/W
R/W
R/W
C3
D3
A3
B3
IT
IT
IT
IT
3
3
3
3
B
B
B
B
R/W
R/W
R/W
R/W
A2
B2
C2
D2
IT
IT
IT
IT
2
2
2
2
B
B
B
B
R/W
R/W
R/W
R/W
A1
B1
C1
D1
IT
IT
IT
IT
1
1
1
1
XRT94L33
Rev.1.2.0.
B
B
B
B
R/W
R/W
R/W
R/W
C0
D0
A0
B0
IT
IT
IT
IT
0
0
0
0