
Table of Contents
(continued)
Contents
Page
4
Agere Systems Inc.
T8302 Internet Protocol Telephone
Advanced RISC Machine (
ARM
)
Data Sheet
July 2001
8.6.3 SDRAM Control Register ....................................................................................................................90
8.6.4 SDRAM Timing and Configuration Register ........................................................................................90
8.6.5 SDRAM Manual Access Register .......................................................................................................91
8.7 SDRAM Timing .............................................................................................................................................92
8.8 Signals ..........................................................................................................................................................94
8.8.1 Address, A[23:0] ..................................................................................................................................94
8.8.2 Data, D[15:0] .......................................................................................................................................94
8.8.3 Byte Enable, BE1N .............................................................................................................................94
8.8.4 Read/Write Signals, RDN, WRN .........................................................................................................94
8.8.5 Chip Selects, FLASH_CS, CS1, CS2, CS3 ........................................................................................94
8.8.6 External WAIT, EXWAIT .....................................................................................................................94
8.8.7 EMI SDRAM, Synchronous DRAM Memory Interface ........................................................................95
8.8.8 SDRAM Address Functionality ............................................................................................................95
8.8.9 SDRAM Clock, SDRCK .......................................................................................................................95
8.8.10 SDRASN, SDCASN, SDWEN ...........................................................................................................95
8.8.11 SDUDQM, SDLDQM .........................................................................................................................95
9 DSP Communications Controller (DCC) .............................................................................................................96
9.1
ARM
Processor Memory and I/O Map .........................................................................................................96
9.2 DCC Token Register ....................................................................................................................................97
9.3 DCC Interrupt Registers ...............................................................................................................................97
9.3.1 DSP2
AR
M Interrupt Register ..............................................................................................................98
9.3.2
ARM
2DSP Interrupt Register .............................................................................................................98
9.4 DCC Controller I/O Signals ...........................................................................................................................99
9.5 DSP Read/Write Timing Diagrams ...............................................................................................................99
10 Ethernet 10/100 MAC ....................................................................................................................................101
10.1 Features .................................................................................................................................................102
10.2 General MAC Information ......................................................................................................................102
10.3 MAC Transmitter ....................................................................................................................................103
10.4 MAC Receiver ........................................................................................................................................103
10.4.1 Address Matching Registers .......................................................................................................103
10.5 MAC Controller, Registers, and Counters ..............................................................................................104
10.6 Control Frame Operation .......................................................................................................................104
10.7 Register Descriptions .............................................................................................................................106
10.7.1 MAC Controller Setup Register ...................................................................................................106
10.7.2 MAC Packet Delay Alarm Value Register ...................................................................................108
10.7.3 MAC Controller Interrupt Enable Register ...................................................................................108
10.7.4 MAC Control Frame Destination Address Registers ...................................................................109
10.7.5 MAC Control Frame Source Address Registers ..........................................................................109
10.7.6 MAC Control Frame Length/Type Register .................................................................................110
10.7.7 MAC Control Frame Opcode Register ........................................................................................110
10.7.8 MAC Control Frame Data Register .............................................................................................111
10.7.9 VLAN Type1 Type/Length Field Register ....................................................................................111
10.7.10 VLAN Type2 Type/Length Field Register ..................................................................................111
10.7.11 MAC Transmit FIFO Register ....................................................................................................111
10.7.12 MAC Receive FIFO Register .....................................................................................................112
10.7.13 MAC Receive Control FIFO Register ........................................................................................112
10.7.14 MDIO Address Register ............................................................................................................114
10.7.15 MDIO Data Register ..................................................................................................................114
10.7.16 MAC PHY Powerdown Register ................................................................................................115
10.7.17 MAC Controller Transmit Control Register ................................................................................115