XRT94L33IB-L Exar Corporation, XRT94L33IB-L Datasheet - Page 432

• 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.
Receive ATM Cell – Insertion/Extraction Memory Register – Byte 3 (Address = 0xN714)
Note:
STEP 4b – Write the contents of the second byte (of this new ATM cell) into the Receive ATM Cell –
Insertion/Extraction Memory Register – Byte 2; as depicted below.
Receive ATM Cell – Insertion/Extraction Memory Register – Byte 2 (Address = 0xN715)
Note:
STEP 4c – Write the contents of the third byte (of this new ATM cell) into the Receive ATM Cell –
Insertion/Extraction Memory Register – Byte 1; as depicted below.
Receive ATM Cell – Insertion/Extraction Memory Register – Byte 2 (Address = 0xN716)
Note:
STEP 4d – Write the contents of the fourth byte (of this new ATM cell) into the Receive ATM Cell –
Insertion/Extraction Memory Register – Byte 0; as depicted below.
Receive ATM Cell – Insertion/Extraction Memory Register – Byte 2 (Address = 0xN717)
Note:
STEP 5 – Inform the “Cell Insertion Processor” that the very next 32-bit word to be written into the
“Cell Insertion Buffer” is NOT the first word of a new ATM cell.
This is accomplished by writing the value “0” into Bit 0 (Insertion Memory Write SoC), within the “Receive
ATM Cell – Memory Control Register” as depicted below.
B
R/W
B
B
B
D7
R/W
R/W
R/W
IT
A7
B7
C7
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
R/W
D6
IT
B
B
B
R/W
R/W
R/W
C6
A6
B6
6
IT
IT
IT
6
6
6
B
R/W
D5
IT
5
B
B
B
Insertion/Extraction Memory Data[7:0]
R/W
R/W
R/W
A5
B5
C5
IT
IT
IT
3-CHANNEL DS3/E3/STS-1 TO STS-3/STM-1 MAPPER IC DATA SHEET
5
5
5
Insertion/Extraction Memory Data[31:24]
Insertion/Extraction Memory Data[23:16]
Insertion/Extraction Memory Data[15:8]
B
R/W
D4
IT
4
B
B
B
R/W
R/W
R/W
C4
A4
B4
IT
IT
IT
4
4
4
B
432
R/W
D3
IT
3
B
B
B
R/W
R/W
R/W
A3
B3
C3
IT
IT
IT
3
3
3
B
R/W
D2
IT
2
B
B
B
R/W
R/W
R/W
C2
A2
B2
IT
IT
IT
2
2
2
B
R/W
D1
IT
1
B
B
B
R/W
R/W
R/W
A1
B1
C1
IT
IT
IT
B
R/W
1
1
1
xr
D0
IT
0
B
B
B
R/W
R/W
R/W
C0
A0
B0
IT
IT
IT
0
0
0