Intel
IXP1250 Network Processor
vi
Datasheet
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32-Bit Unidirectional IX Bus Timing - Consecutive Receives, EOP on
14th Data Return with Status............................................................................104
32-Bit Unidirectional IX Bus Timing - Consecutive Receives, EOP on 1st
Through 13th Data Return with Status (13th Data Return Shown)...................105
32-Bit Unidirectional IX Bus Timing - Consecutive Receives, EOP, 64-Bit
Status................................................................................................................106
32-Bit Unidirectional IX Bus Timing - Consecutive Receives, Two Element
Transfers with 32-Bit Status..............................................................................107
32-Bit Unidirectional IX Bus Timing - Consecutive Transmits, EOP .................108
32-Bit Unidirectional IX Bus Timing - Consecutive Transmits with Prepend,
EOP...................................................................................................................109
64-Bit Bidirectional IX Bus Timing - Consecutive FastPort Receives, Same
Port, EOP, No Status, FP_READY_WAIT=0....................................................110
64-Bit Bidirectional IX Bus Timing - Consecutive FastPort Receives, Same
Port, EOP, No Status, FP_READY_WAIT=5....................................................111
64-Bit Bidirectional IX Bus Timing - Consecutive FastPort Receives, Same
Port, EOP, with Status, FP_READY_WAIT=0 ..................................................112
64-Bit Bidirectional IX Bus Timing - Consecutive FastPort Receives, Same
Port, EOP, No Status, FP_READY_WAIT=5....................................................113
64-Bit Bidirectional IX Bus Timing - Consecutive FastPort Receives, Same
Port, EOP, No Status, FP_READY_WAIT=0, Cancelled Request....................114
64-Bit Bidirectional IX Bus Timing - Consecutive FastPort Receives, Same
Port, No EOP, FP_READY_WAIT=Don
’
t Care.................................................115
64-Bit Bidirectional IX Bus Timing - Consecutive FastPort Receives, Different
Ports, EOP, No Status, FP_READY_WAIT=0 ..................................................116
64-Bit Bidirectional IX Bus Timing - Consecutive FastPort Receives, Different
Ports, EOP, No Status, FP_READY_WAIT=0, Cancelled Request..................117
Consecutive Fetch Ready Flags, 1-2 MAC Mode (with No External Registered
Decoder) - RDYBUS_TEMPLATE_CTL[10]=1 .................................................118
Consecutive Fetch Ready Flags, 3+ MAC Mode (with External Decoder) -
RDYBUS_TEMPLATE_CTL[10]=0 ...................................................................118
Fetch Ready Flags, Get/Send Commands, 3+ MAC Mode (with External
Registered Decoder) - RDYBUS_TEMPLATE_CTL[10]=0...............................119
Ready Bus Control Timing, Fetch Ready Flags - Flow Control - Fetch Ready
Flags, 1-2 MAC Mode (with No External Registered Decoder) -
RDYBUS_TEMPLATE_CTL[10]=1 ...................................................................119
Ready Bus Control Timing, Fetch Ready Flags - Flow Control - Fetch Ready
Flags, 3+ MAC Mode (with External Registered Decoder) -
RDYBUS_TEMPLATE_CTL[10]=0 ...................................................................120
IX Bus Ownership Passing................................................................................121
SRAM SCLK Signal AC Parameter Measurements..........................................121
SRAM Bus Signal Timing..................................................................................122
Pipelined SRAM Read Burst of Eight Longwords .............................................124
Pipelined SRAM Write Burst of Eight Longwords .............................................125
Pipelined SRAM Read Burst of Four From Bank 0 Followed by Write Burst
of Four From Bank 8 .........................................................................................126
Pipelined SRAM Longword Write Followed by 2 Longword Burst Read
Followed by 4 Longword Burst Write ................................................................127
Flowthrough SRAM Read Burst of Eight Longwords........................................128
BootROM Read.................................................................................................129
BootROM Write.................................................................................................130
Pipelined SRAM Two Longword Burst Read Followed by BootROM Write......131
SRAM SlowPort Read.......................................................................................132
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