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xiv Intel® PXA255 Processor Developer’s Manual
Contents
6-15 Flash Memory Reset Logic if Watchdog Reset is Not Necessary ...........................................6-42
6-16 MSC0/1/2.................................................................................................................................6-46
6-17 32-Bit Burst-of-Eight ROM or Flash Read Timing Diagram (MSC0[RDF] = 4,
MSC0[RDN] = 1, MSC0[RRR] = 1)..........................................................................................6-51
6-18 Eight-Beat Burst Read from 16-Bit Burst-of-Four ROM or Flash
(MSC0[RDF] = 4, MSC0[RDN] = 1, MSC0[RRR] = 0).............................................................6-52
6-19 32-Bit Non-burst ROM, SRAM, or Flash Read Timing Diagram - Four Data
Beats (MSC0[RDF] = 4, MSC0[RRR] = 1)...............................................................................6-53
6-20 32-Bit SRAM Write Timing Diagram (4-beat Burst (MSC0[RDN] = 2,
MSC0[RRR] = 1)......................................................................................................................6-54
6-21 32-Bit Variable Latency I/O Read Timing (Burst-of-Four, One Wait Cycle Per
Beat) (MSC0[RDF] = 2, MSC0[RDN] = 2, MSC0[RRR] = 1) ...................................................6-56
6-22 32-Bit Variable Latency I/O Write Timing (Burst-of-Four, Variable Wait Cycles
Per Beat) .................................................................................................................................6-57
6-23 Asynchronous 32-Bit Flash Write Timing Diagram (2 Writes) .................................................6-59
6-24 MCMEM1.................................................................................................................................6-60
6-25 MCATT1 ..................................................................................................................................6-60
6-26 16-Bit PC Card Memory Map ..................................................................................................6-64
6-27 Expansion Card External Logic for a One-Socket Configuration.............................................6-67
6-28 Expansion Card External Logic for a Two-Socket Configuration.............................................6-68
6-29 16-Bit PC Card Memory or I/O 16-Bit (Half-word) Access.......................................................6-69
6-30 16-Bit PC Card I/O 16-Bit Access to 8-Bit Device ...................................................................6-70
6-31 Alternate Bus Master Mode.....................................................................................................6-71
6-32 Variable Latency IO.................................................................................................................6-71
6-33 Asynchronous Boot Time Configurations and Register Defaults.............................................6-76
6-34 SMROM Boot Time Configurations and Register Defaults......................................................6-77
6-35 SMROM Boot Time Configurations and Register Defaults......................................................6-78
7-1 LCD Controller Block Diagram ..................................................................................................7-3
7-2 Temporal Dithering Concept - Single Color...............................................................................7-6
7-3 Compare Range for TMED........................................................................................................7-7
7-4 TMED Block Diagram...............................................................................................................7-8
7-5 Palette Buffer Format ..............................................................................................................7-11
7-6 1 Bit Per Pixel Data Memory Organization..............................................................................7-11
7-7 2 Bits Per Pixel Data Memory Organization ............................................................................7-12
7-8 4 Bits Per Pixel Data Memory Organization ............................................................................7-12
7-9 8 Bits Per Pixel Data Memory Organization ............................................................................7-12
7-10 16 Bits Per Pixel Data Memory Organization - Passive Mode ................................................7-13
7-11 16 Bits Per Pixel Data Memory Organization - Active Mode ...................................................7-13
7-12 Passive Mode Start-of-Frame Timing......................................................................................7-15
7-13 Passive Mode End-of-Frame Timing.......................................................................................7-15
7-14 Passive Mode Pixel Clock and Data Pin Timing......................................................................7-16
7-15 Active Mode Timing.................................................................................................................7-16
7-16 Active Mode Pixel Clock and Data Pin Timing ........................................................................7-17
7-17 Frame Buffer/Palette Output to LCD Data Pins in Active Mode ..............................................7-20
7-18 LCD Data-Pin Pixel Ordering...................................................................................................7-22
8-1 Texas Instruments’ Synchronous Serial Frame* Format...........................................................8-4
8-2 Motorola SPI* Frame Format.....................................................................................................8-5
8-3 National Microwire* Frame Format............................................................................................8-6
8-4 Motorola SPI* Frame Formats for SPO and SPH Programming.............................................8-13
9-1 I
2
C Bus Configuration Example................................................................................................9-2
9-2 Start and Stop Conditions..........................................................................................................9-5