5.6.2.3
5.6.2.4
5.6.2.5
5.6.2.6
5.6.2.7
5.7
Optical Module Interface ................................................................................................... 107
5.7.1
5.7.2
Functional Descriptions ....................................................................................... 108
5.7.2.1
5.7.2.2
5.7.3
5.7.3.1
5.7.3.2
5.7.3.3
5.7.3.4
5.7.3.5
5.7.3.6
5.8
LED Interface ....................................................................................................................115
5.8.1
Modes of Operation ............................................................................................. 115
5.8.2
5.8.3
5.8.4
5.8.5
5.8.6
LED DATA Decodes ............................................................................................ 118
5.8.6.1
5.9
CPU Interface ................................................................................................................... 120
5.9.1
Functional Description ......................................................................................... 121
5.9.1.1
5.9.1.2
5.9.1.3
5.9.2
Endian..................................................................................................................122
5.10
TAP Interface (JTAG) ....................................................................................................... 123
5.10.1 TAP State Machine .............................................................................................. 123
5.10.3 ID Register ........................................................................................................... 125
5.10.5 Bypass Register................................................................................................... 125
5.11
Loopback Modes .............................................................................................................. 125
5.12
Clocks ............................................................................................................................... 127
5.12.1.1 CLK125 ................................................................................................ 128
5.12.3 RGMII Clocks....................................................................................................... 128
5.12.4 MDC Clock........................................................................................................... 128
5.12.5 JTAG Clock.......................................................................................................... 129
2
C Clock.............................................................................................................. 129
5.12.7 LED Clock ............................................................................................................ 129
Datasheet
Document Number: 278757
Revision Number: 009
Revision Date: 27-Oct-2005
Transmit Jitter ...................................................................................... 106
Receive Jitter ....................................................................................... 106
2
2
C Read Operation.............................................................................. 110
2
C Write Operation.............................................................................. 111
Read Access ........................................................................................121
Write Access ........................................................................................121
Contents
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