Realtek Ameba-D RTL872 D Series User Manual page 11

21.1 Overall Description ........................................................................................................................................................ 453
21.1.1 Introduction ................................................................................................................................................................ 453
21.1.2 Features ...................................................................................................................................................................... 453
21.1.3 Application Scenario ................................................................................................................................................... 453
21.2 Architecture ................................................................................................................................................................... 454
21.2.1 Q-Decoder Block Diagram .......................................................................................................................................... 454
21.2.2 Position Measurement ............................................................................................................................................... 455
21.2.3 Velocity Measurement................................................................................................................................................ 459
21.3 Registers ......................................................................................................................................................................... 460
21.3.1 Global Control Registers ............................................................................................................................................. 460
21.3.2 Position Measurement Registers ................................................................................................................................ 463
21.3.3 Velocity Measurement Registers ................................................................................................................................ 465
21.3.4 Interrupt Registers ...................................................................................................................................................... 468
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22 Inter-IC Sound (I S) ........................................................................................................................................................ 472
22.1 Introduction ................................................................................................................................................................... 472
22.2 Features ......................................................................................................................................................................... 472
22.3 Interface ......................................................................................................................................................................... 472
22.4 Functional Description ................................................................................................................................................... 473
22.4.1 Signal Lines ................................................................................................................................................................. 473
22.4.2 Operation Mode ......................................................................................................................................................... 474
22.4.3 Serial Data Standard................................................................................................................................................... 475
22.4.4 Clock Type ................................................................................................................................................................... 476
22.4.5 Memory Block ............................................................................................................................................................. 478
22.4.6 FIFO Allocation ........................................................................................................................................................... 478
22.5 Registers ......................................................................................................................................................................... 482
22.5.1 Control Register (IS_CTL) ............................................................................................................................................ 483
22.5.2 Tx Page Pointer Register (IS_TX_PAGE_PTR) .............................................................................................................. 484
22.5.3 Rx Page Pointer Register (IS_RX_PAGE_PTR) ............................................................................................................. 484
22.5.4 Page Size and Sample Rate Setting Register (IS_SETTING) ......................................................................................... 485
22.5.5 Tx Interrupt Enable Register (IS_TX_MASK_INT) ........................................................................................................ 485
22.5.6 Tx Interrupt Status Register (IS_TX_STATUS_INT) ...................................................................................................... 486
22.5.7 Rx Interrupt Enable Register (IS_RX_MASK_INT)........................................................................................................ 487
22.5.8 Rx Interrupt Status Register (IS_RX_STATUS_INT)...................................................................................................... 488
22.5.9 Tx Page Own Bit Register (IS_TX_PAGE_OWNx) ........................................................................................................ 489
22.5.10 Rx Page Own Bit Register (IS_RX_PAGE_OWNx) .................................................................................................... 489
22.5.11 Version ID (IS_VERSION_ID) .................................................................................................................................... 489
Abbreviations .......................................................................................................................................................................... 490
Revision History....................................................................................................................................................................... 494
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