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xiv SA-1100 Developer’s Manual
11.12.6.1Audio Transmit FIFO Service Request Flag (ATS)
(read-only, maskable interrupt).......................................... 11-163
11.12.6.2Audio Receive FIFO Service Request Flag (ARS)
(read-only, maskable interrupt).......................................... 11-163
11.12.6.3Telecom Transmit FIFO Service Request Flag (TTS)
(read-only, maskable interrupt).......................................... 11-164
11.12.6.4Telecom Receive FIFO Service Request Flag (TRS)
(read-only, maskable interrupt).......................................... 11-164
11.12.6.5Audio Transmit FIFO Underrun Status (ATU)
(read/write, nonmaskable interrupt)................................... 11-164
11.12.6.6Audio Receive FIFO Overrun Status (ARO)
(read/write, nonmaskable interrupt)................................... 11-164
11.12.6.7Telecom Transmit FIFO Underrun Status (TTU)
(read/write, nonmaskable interrupt)................................... 11-165
11.12.6.8Telecom Receive FIFO Overrun Status (TRO)
(read/write, nonmaskable interrupt)................................... 11-165
11.12.6.9Audio Transmit FIFO Not Full Flag (ANF)
(read-only, noninterruptible)............................................... 11-165
11.12.6.10Audio Receive FIFO Not Empty Flag (ANE)
(read-only, noninterruptible)............................................... 11-165
11.12.6.11Telecom Transmit FIFO Not Full Flag (TNF)
(read-only, noninterruptible)............................................... 11-165
11.12.6.12Telecom Receive FIFO Not Empty Flag (TNE)
(read-only, noninterruptible)............................................... 11-166
11.12.6.13Codec Write Completed Flag (CWC)
(read-only, noninterruptible)............................................... 11-166
11.12.6.14Codec Read Completed Flag (CRC)
(read-only, noninterruptible)............................................... 11-166
11.12.6.15Audio Codec Enabled Flag (ACE)
(read-only, noninterruptible)............................................... 11-166
11.12.6.16Telecom Codec Enabled Flag (TCE)
(read-only, noninterruptible)............................................... 11-166
11.12.7 SSP Operation................................................................................ 11-169
11.12.7.1Frame Format.................................................................. 11-169
11.12.7.2Baud Rate Generation..................................................... 11-173
11.12.7.3 SSP Transmit and Receive FIFOs.................................. 11-173
11.12.7.4CPU and DMA Register Access Sizes ............................ 11-174
11.12.7.5Alternate SSP Pin Assignment ........................................ 11-174
11.12.8 SSP Register Definitions ................................................................ 11-174
11.12.9 SSP Control Register 0 .................................................................. 11-174
11.12.9.1Data Size Select (DSS) ................................................... 11-175
11.12.9.2Frame Format (FRF)........................................................ 11-175
11.12.9.3Synchronous Serial Port Enable (SSE) ........................... 11-175
11.12.9.4Serial Clock Rate (SCR).................................................. 11-176
11.12.10SSP Control Register 1 ................................................................. 11-177
11.12.10.1Receive FIFO Interrupt Enable (RIE)............................. 11-177
11.12.10.2Transmit FIFO Interrupt Enable (TIE)............................ 11-177
11.12.10.3Loopback Mode (LBM) .................................................. 11-177
11.12.10.4Serial Clock Polarity (SPO)............................................ 11-177
11.12.10.5Serial Clock Phase (SPH) ............................................. 11-178
11.12.10.6External Clock Select (ECS).......................................... 11-179
11.12.11SSP Data Register ........................................................................ 11-180
11.12.12SSP Status Register...................................................................... 11-181