Marvell PXA27x Processor Family

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PXA27x Processor Family Design Guide Doc. No. MV-S301207-00 Rev. A Page 40 Copyright © 2009 Marvell April 6, 2009, Released
Section 4. Mixed Voltage Design Considerations 4.1 Overview The PXA27x processor uses a complex power management system that provides the best possible power utilization. The power management system requires design of several voltage supplies into your system. Use a sophisticated power management integrated circuit (PMIC) to use all the power savings possible with the PXA27x processor. However, it is not necessary to incorporate a PMIC into a PXA27x processor-based system. By using four separate power regulators (optionally five), developing a power management system is possible for the PXA27x processor. However, the trade-off for such simplicity is increased power consumption and loss of flexibility in peripheral voltage selection and added requirements for battery backup. 4.1.1 Required Power Supplies See Table 6 for the lists of the required power supplies and their associated values for the PXA27x processor. By careful selection, the three voltage supplies can supply the nine voltages. Using a 1.1 V, a 1.3 V, and a 3.3 V supply (all regulated at ±10%), satisfy all requirements for the nine voltage domains. A fourth voltage regulator supplies the voltage for VCC_BATT. While the supplied voltage is the same voltage as a regulator already included in the design, a separate regulator must provide the supplied voltage in order to keep the voltage draw to a minimum. The current required to supply VCC_BATT is very small and so use a regulator with very small current source capability and correspondingly small current draw for the voltage supply. The other 3.3 V regulator powers the peripherals and must have much larger current sourcing capabilities. In a handheld system, the power draw for the voltage supply is not acceptable. The trade-off for simplifying these nine supplies to three is that the peripheral supply voltages must all be 3.3 V. If 3.3 V is unacceptable to the system design, adding a fifth regulator of 1.8 V allows greater flexibility in the design without dramatically increasing the system cost or complexity. The addition of a fifth regulator also allows for a mixture of 3.3 V and 1.8 V peripherals for use in the system design. Copyright © 2009 Marvell Doc. No. MV-S301207-00 Rev. A April 6, 2009, Released Page 41
Page 1 and 2: Cover Marvell ® PXA27x Processor F
Page 3 and 4: Table of Contents Section 1. Introd
Page 5 and 6: 5.5.1 Fly-By DMA Transfers ........
Page 7 and 8: 7.5.8 Active Color, 18-bit per pixe
Page 9 and 10: 15.4 Modes of Operation Overview ..
Page 11 and 12: 24.2 Signals ......................
Page 13 and 14: Appendix E. Companion Components fo
Page 15 and 16: List of Figures Figure 1: PXA27x Pr
Page 17 and 18: Figure 83: TAP Controller State Dia
Page 19 and 20: Table 40: FFUART Interface Signals.
Page 21 and 22: Section 1. Introduction to Part I T
Page 23 and 24: 1.3 Package Introduction The PXA27x
Page 25 and 26: Section 2. PCB Design Guidelines Th
Page 27 and 28: Figure 3: Recommended PCB Layer Ass
Page 29 and 30: Figure 5: VF-BGA 13mm x 13mm Compon
Page 31 and 32: Figure 7: PBGA 23mm x 23mm Componen
Page 33 and 34: 2.2.3.2 FS-CSP Escape Routing This
Page 35 and 36: Figure 10: Recommended Mobile Hands
Page 37 and 38: Figure 11: FS-CSP (14x14) Tray Spec
Page 39: Section 3. Design Check List For de
Page 43 and 44: Figure 13: Minimal Voltage Regulato
Page 45 and 46: Section 5. Power Measurements 5.1 O
Page 47 and 48: • Ensure TDI and TMS pins are pul
Page 49 and 50: Section 1. Introduction to Part II
Page 51 and 52: Section 2. Package and Pins Refer t
Page 53 and 54: Section 3. Clocks and Power Interfa
Page 55 and 56: 3.2.3 Power Enable (PWR_EN) PWR_EN
Page 57 and 58: Figure 14: Typical Battery and Exte
Page 59 and 60: Note The oscillator-output-high-dri
Page 61 and 62: Section 4. Internal SRAM There is n
Page 63 and 64: Section 5. DMA Controller Interface
Page 65 and 66: 5.5.1.1 Signals See Table 10 for th
Page 67 and 68: Figure 18: Companion Chip Requestin
Page 69 and 70: Section 6. System Memory Interface
Page 71 and 72: Table 13: PXA27x Processor Memory C
Page 73 and 74: Figure 18: General Memory Interface
Page 75 and 76: Figure 19: PXA27x Processor Memory
Page 77 and 78: 6.5 Modes of Operation Overview Ref
Page 79 and 80: Figure 22: SDRAM Memory System Exam
Page 81 and 82: Table 18: Device 1 x 12 x 8 BS0 A11
Page 83 and 84: Table 20: Signal Name Flash Interfa
Page 85 and 86: 6.5.3 ROM Interface 6.5.3.1 ROM Sig
Page 87 and 88: Table 22: Signal Name SRAM Interfac
Page 89 and 90: 6.5.5 Variable Latency Input/Output
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6.5.5.3 VLIO Memory Layout Notes Re
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Refer to Marvell ® PXA270 Processo
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Figure 28: External Logic for a Two
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esponsibility for SDRAM integrity d
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Figure 29: Alternate Bus Master Mod
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Section 7. LCD Interface This chapt
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Table 27: LCD Controller Data Pin U
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7.5 Modes of Operation Overview 7.5
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Table 29: Passive Display Pins Requ
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Table 33: LCD Interface Signal List
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7.5.7.1 Signals The signals in Tabl
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7.5.8.1 Signals The signals in Tabl
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7.5.9.1 Signals For active displays
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Section 8. SSP Port Interface 8.1 O
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Table 37: SSP Serial Port I/O Signa
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Figure 41: External Clock Enable Co
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Section 9. Inter-Integrated Circuit
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. Figure 44: Using an Analog Switch
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Section 10.UART Interfaces This cha
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Table 39: UART Signal Descriptions
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10.3.2 Bluetooth UART The BTUART is
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Section 11. Fast Infrared Interface
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Section 12.USB Client Controller Th
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• A more inexpensive solution is
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• During sleep and deep sleep mod
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Figure 54: Host Port 2 OTG Transcei
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• UDC • D+, D-, and transmit en
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Figure 57: Connection to OTG ID USB
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Table 47: Input from External USB T
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Section 13.AC ’97 This chapter de
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5. Enter sleep mode as outlined in
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Section 14.I 2 S Interface This cha
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Figure 60: I 2 S Controller Interfa
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Figure 61: PXA27x Processor Provide
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Section 15.MultiMediaCard/SD/SDIO C
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Table 54: MMC/SD/SDIO Controller Su
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See Figure 64 for the detailed sche
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Figure 65: SD and SDIO Protocol Int
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Table 58: SD/SDIO Card Pull-Up and
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See Figure 66 for illustration of a
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Section 16.Baseband Interface 16.1
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Section 17.Keypad Interface This ch
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17.4 Layout Notes This section has
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Figure 69: Keypad Matrix and Direct
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17.5.3 Keypad Matrix and Direct Key
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Section 18.USIM Controller Interfac
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18.2.2 USIM Card Interface Signals
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Figure 73: Connectivity USIM Card a
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Section 19.Universal Serial Bus Hos
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Figure 75: PXA27x Processor Host 2
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Section 20.Real Time Clock Interfac
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Section 21.OS Timer Interface This
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21.3.4 Output Control This block co
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Section 22.Pulse-Width Modulator In
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Section 23.General Purpose Input/Ou
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causes extraneous resets or interru
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Section 24.Interrupt Interface This
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Figure 80: Interrupt Controller Blo
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Section 25.JTAG Debug This chapter
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Table 69: TAP Controller Pin Defini
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Figure 82: PXA27x Processor Scan Ch
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Table 71: IEEE 1149.1 Boundary-Scan
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25.4.4.3 Data-Specific Registers Da
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25.4.5.3 Select-DR-Scan State The S
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25.4.5.14Pause-IR State The Pause-I
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Section 26.Quick Capture Interface
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Figure 85: Interface Options Summar
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Appendix A. PXA27x DVK Block Diagra
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Figure 87: Main Board Block Diagram
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Figure 89: Liquid Crystal Display B
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Figure 91: Keyboard Block Diagram F
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Appendix B. PXA27x Processor Develo
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Appendix C. PXA27x DVK Bill-of-Mate
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Appendix D. PXA27x Processor and PX
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DSADR16 - DSADR31 DTADR16 - DTADR31
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- FBR1-FBR6 registers added to supp
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• An optional output AC97_SYSCLK
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- The RTSR register has 12 new alar
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Note The only register that remains
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Appendix E. Companion Components fo
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E.6 Memory Controller E.7 LCD Contr
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E.13 AC ‘97 E.14 I 2 S (Inter IC
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Glossary 3G. An industry term used
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Circuit Switched. Used by wireless
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Endpoint Direction. The direction o
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HSTL. High-Speed Transceiver Logic
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inter-symbol interference, because
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SAW. Surface Acoustic Wave filter.
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TPV. Third Party Vendor Transaction
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Back Cover Marvell Semiconductor, I
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