
Table of Contents
(continued)
Contents
Page
Agere Systems Inc.
7
Data Sheet
July 2001
T8302 Internet Protocol Telephone
Advanced RISC Machine (
ARM
)
13.5.5 Hc LS Threshold Register ...........................................................................................................176
13.6 Root Hub Partition ..................................................................................................................................177
13.6.1 Hc Rh Descriptor A Register .......................................................................................................177
13.6.2 Hc Rh Descriptor B Register .......................................................................................................180
13.6.3 Hc Rh Status Register .................................................................................................................181
13.6.4 Hc Rh Port Status [1:NDP] Register ............................................................................................182
14 IrDA_ACC and UART_ACC ...........................................................................................................................187
14.1 ACC Operation .......................................................................................................................................187
14.1.1 Transmit and Receive Operation .................................................................................................188
14.1.2 Transfer Operating Modes ..........................................................................................................188
14.1.3 Programming the Baud Rate .......................................................................................................188
14.1.4 Extended Characters ...................................................................................................................189
14.2 ACC Registers .......................................................................................................................................189
14.2.1 Baud Rate Register .....................................................................................................................190
14.2.2 Baud Rate Counter Register .......................................................................................................190
14.2.3 FIFO Status Register ...................................................................................................................191
14.2.4 Receiver Control Register ...........................................................................................................192
14.2.5 ACC Parity Bit Encoding .............................................................................................................192
14.2.6 Transmitter Control Register .......................................................................................................192
14.2.7 Mode Control Register ................................................................................................................193
14.2.8 Tx/Rx FIFO Register ...................................................................................................................194
14.2.9 IrDA Feature Register .................................................................................................................194
14.3 IrDA Formatter .......................................................................................................................................197
14.3.1 IrDA Formatter Operation ............................................................................................................197
14.4 DMA Support for ACC I/O Data .............................................................................................................199
14.5 Operation on Reset ................................................................................................................................199
15 Synchronous Serial Interface (SSI) ................................................................................................................200
15.1 Description .............................................................................................................................................200
15.1.1 Clocks ..........................................................................................................................................200
15.1.2 Date Transfer ..............................................................................................................................201
15.1.3 Pin Configuration .........................................................................................................................201
15.1.4 SSN Input ....................................................................................................................................201
15.1.5 Configurations .............................................................................................................................201
15.1.6 Slave Chip Select ........................................................................................................................202
15.2 SSI Registers .........................................................................................................................................203
15.2.1 SSI Data Register ........................................................................................................................203
15.2.2 SSI Control Register 1 .................................................................................................................204
15.2.3 SSI Control Register 2 Bit Descriptions .......................................................................................205
15.2.3.1 SSN ...............................................................................................................................205
15.2.3.2 FASTCLEAR .................................................................................................................205
15.2.3.3 MDOD ...........................................................................................................................205
15.2.3.4 SCOD ............................................................................................................................206
15.3 SSI Operation .........................................................................................................................................207
15.3.1 SPHA = 0 Format ........................................................................................................................208
15.3.1.1 Master Operation ...........................................................................................................209
15.3.1.2 Slave Operation .............................................................................................................209
15.3.2 SPHA = 1 Format ........................................................................................................................209
15.3.2.1 Master ...........................................................................................................................210
15.3.2.2 Slave .............................................................................................................................211
15.3.3 Transfer Start ..............................................................................................................................211