
Datasheet
7
Contents
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Cell Rate Decoupling FIFOs in ATM-UTOPIA Multi-Channel Configuration ............................161
Cell Rate Decoupling FIFO in ATM-UTOPIA Single-Channel Configuration............................162
Four Independent ATM-UTOPIA Interfaces .............................................................................163
ATM-UTOPIA Multiple Physical Device Mode..........................................................................164
7-Word ATM Cell Structure (64-Bit UTOPIA Interface) ............................................................167
13-Word ATM Cell Structure (32-Bit UTOPIA Interface) ..........................................................168
14-Word ATM Cell Structure (32-Bit UTOPIA Interface) ..........................................................168
26-Word ATM Cell Structure (16-Bit UTOPIA Interface) ..........................................................168
27-Word ATM Cell Structure (16-Bit UTOPIA Interface) ..........................................................169
52-Word ATM Cell Structure (8-Bit UTOPIA Interface) ............................................................169
53-Word ATM Cell Structure (8-Bit UTOPIA Interface) ............................................................169
Receive ATM-UTOPIA Interface as a Single PHY Device, 64-Bit Data Bus, and 56-
Byte Cell Data Structure (ATM-UTOPIA Level 3).....................................................................175
Transmit ATM-UTOPIA Interface as a Single PHY Device, 64-Bit Data Bus, and 56-
Byte Cell Data Structure (ATM-UTOPIA Level 3).....................................................................175
Receive ATM-UTOPIA Interface as a Single PHY Device, 32-Bit Data Bus, and 56-
Byte Cell Data Structure (ATM-UTOPIA Level 3 Mode)...........................................................176
Transmit ATM-UTOPIA Interface as a Single PHY Device, 32-Bit Data Bus, and 56-
Byte Cell Data Structure (ATM-UTOPIA Level 3 Mode)...........................................................176
Receive ATM-UTOPIA Interface as a Multiple PHY Device, 32-Bit Data Bus, and 56-
Byte Cell Data Structure...........................................................................................................177
Transmit ATM-UTOPIA Interface as a Multiple PHY Device, 32-Bit Data Bus, and 56-
Byte Cell Data Structure...........................................................................................................177
Receive ATM-UTOPIA Interface as a Single PHY Device, 16-Bit Data Bus, and 54-
Byte Cell Data Structure...........................................................................................................178
Transmit ATM-UTOPIA Interface as a Single PHY Device, 16-Bit Data Bus, and 54-
Byte Cell Data Structure...........................................................................................................178
Receive ATM-UTOPIA Interface as a Multiple PHY Device, 16-Bit Data Bus, and 54-
Byte Cell Data Structure (ATM-UTOPIA Level 2 Mode)...........................................................179
Transmit ATM-UTOPIA Interface as a Multiple PHY Device, 16-Bit Data Bus, and 54-
Byte Cell Data Structure (ATM-UTOPIA Level 2 Mode)...........................................................179
HDLC Frame Mapping..............................................................................................................181
HDLC Frame Format................................................................................................................182
POS-UTOPIA Physical Layer/Link Layer Rate Decoupling FIFOs in Multi-Channel
Configuration ............................................................................................................................189
POS-UTOPIA Physical Layer/Link Layer Rate Decoupling FIFO in Single-Channel
Configuration ............................................................................................................................189
Four Independent POS-UTOPIA Interfaces .............................................................................190
POS-Packet Format..................................................................................................................193
POS-Packet Data Structure Using the 64-Bit UTOPIA Interface..............................................193
POS-Packet Data Structure Using the 32-Bit UTOPIA Interface..............................................194
POS-Packet Data Structure Using the 16-Bit UTOPIA Interface..............................................194
POS-Packet Data Structure Using the 8-Bit UTOPIA Interface................................................194
Receive POS-UTOPIA Interface as a Single PHY Device with 32-Bit Data Bus Using
Port Selection (POS-UTOPIA Level 3 Mode and Only Channel 0 Is Used).............................200
Transmit POS-UTOPIA Interface as a Single PHY Device with 32-Bit Data Bus Using
Port Selection (POS-UTOPIA Level 3 Mode and Only Channel 0 Is Used).............................201
Receive POS-UTOPIA Interface as a Single PHY Device with 64-Bit Data Bus Using
Port Selection (POS-UTOPIA Level 3 Mode)...........................................................................201
Transmit POS-UTOPIA Interface as a Single PHY Device with 64-Bit Data Bus Using
Port Selection (POS-UTOPIA Level 3 Mode)...........................................................................202
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