Texas Instruments TMS3320C5515 manual Clock Generator Registers, Lock Time

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System Clock Generator

Table 1-11shows programming examples for different PLL MODE frequencies.

Table 1-11. Examples of Selecting a PLL MODE Frequency, When CLK_SEL=L

RDBYPASS

OUTDIVEN

M

RDRATIO

ODRATIO

PLL Output Frequency

1

0

173h

X

X

32.768KHz x (173h+4) = 12.288 MHz

1

1

E4Ah

X

2

32.768KHz x (E4Ah + 4)/3 = 40.00 MHz

1

0

723h

X

X

32.768KHz x (723h + 4) = 60.00 MHz

1

0

8EDh

X

X

32.768KHz x (8EDh + 4) = 75.01 MHz

1

0

BE8h

X

X

32.768KHz x (BE7h + 4) = 100.01 MHz

1

0

E4Ah

X

X

32.768KHz x (E4Ah + 4) = 120.00 MHz

 

 

 

 

 

 

1.4.3.2.5 Lock Time

As previously discussed, you must place the clock generator in bypass mode before changing the PLL settings. The time it takes the PLL to complete its phase-locking sequence is referred to as the lock time. The PLL has a lock time of 4 ms. Software is responsible for ensuring the PLL remains in BYPASS_MODE for at least 4 ms before switching to PLL_MODE.

1.4.3.2.6 Software Steps To Modify Multiplier and Divider Ratios

You can follow the steps below to program the PLL of the DSP clock generator. The recommendation is to stop all peripheral operation before changing the PLL frequency, with the exception of the device CPU and USB. The device CPU must be operational to program the PLL controller. Software is responsible for ensuring the PLL remains in BYPASS_MODE for at least 4 ms before switching to PLL_MODE.

1.Make sure the clock generator is in BYPASS MODE by setting SYSCLKSEL = 0.

2.Set CLR_CNTL = 0 in CGCR1.

3.Program RDRATIO, M, and RDBYPASS in CGCR2 according to your required settings.

4.Program ODRATIO and OUTDIVEN in CGCR4 according to your required settings.

5.Write 0806h to the INIT field of CGCR3.

6.Set PLL_PWRDN = 0, CLR_CNTL = 1.

7.Wait 4 ms for the PLL to complete its phase-locking sequence.

8.Place the clock generator in its PLL MODE by setting SYSCLKSEL = 1.

1.4.4Clock Generator Registers

Table 1-12lists the registers associated with the clock generator of the DSP. The clock generator registers can be accessed by the CPU at the 16-bit addresses specified in Table 1-12. Note that the CPU accesses all peripheral registers through its I/O space. All other register addresses not listed in Table 1-12should be considered as reserved locations and the register contents should not be modified.

Table 1-12. Clock Generator Registers

CPU Word

Acronym

Register Description

Section

Address

 

 

 

 

 

 

 

1C20h

CGCR1

Clock Generator Control Register 1

Section 1.4.4.1

1C21h

CGCR2

Clock Generator Control Register 2

Section 1.4.4.2

1C22h

CGCR3

Clock Generator Control Register 3

Section 1.4.4.3

1C23h

CGCR4

Clock Generator Control Register 4

Section 1.4.4.4

1C1Eh

CCR1

Clock Configuration Register 1

Section 1.4.4.5

1C1Fh

CCR2

Clock Configuration Register 2

Section 1.4.4.6

 

 

 

 

SPRUFX5A –October 2010 –Revised November 2010

System Control

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Copyright © 2010, Texas Instruments Incorporated

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Contents Users Guide Submit Documentation Feedback Contents List of Figures Submit Documentation Feedback List of Tables Submit Documentation Feedback Submit Documentation Feedback Read This First Related Documentation From Texas Instruments Related Documentation From Texas Instruments Submit Documentation Feedback Functional Block Diagram Block DiagramCPU Core Using FFT Accelerator ROM routinesFFT Hardware Accelerator AddressPeripherals Power ManagementProgram/Data Memory Map System MemoryDaram Blocks On-Chip Dual-Access RAM DaramCPU Byte Address Range DaramSaram On-Chip Single-Access RAM SaramSaram Blocks Sarom Blocks On-Chip Single-Access Read-Only Memory SaromExternal Memory Asynchronous Emif InterfaceOverview 2 I/O Memory MapDevice Clocking DSP Clocking Diagram Clock Domains Powering Down and Powering Up the System PLL PLL Output Frequency ConfigurationFunctional Description Multiplier and DividersBit Field Value Description Clkout PinSRC DSP Reset Conditions of the System Clock Generator ConfigurationClock Generator During Reset Clock Generator After ResetSetting the System Clock Frequency In the Bypass Mode Register Bits Used in the Bypass ModeEntering and Exiting the PLL Mode Register Bits Used in the PLL ModeCV DD = 1.05 CV DD = 1.3 Clock Signal Name Setting the Output Frequency for the PLL ModeFrequency Ranges for Internal Clocks 10. PLL Clock Frequency RangesLock Time Clock Generator RegistersSoftware Steps To Modify Multiplier and Divider Ratios 12. Clock Generator RegistersClock Generator Control Register 2 CGCR2 1C21h Clock Generator Control Register 1 CGCR1 1C20hInit Clock Generator Control Register 3 CGCR3 1C22hClock Generator Control Register 4 CGCR4 1C23h 17. Clock Configuration Register 1 CCR1 Field Descriptions Clock Configuration Register 1 CCR1 1C1EhClock Configuration Register 2 CCR2 1C1Fh 18. Clock Configuration Register 2 CCR2 Field Descriptions19. Power Management Features Power DomainsClock Management 20. DSP Power DomainsPower Domains Description Daram CPU Domain Clock GatingHwai 21. Idle Configuration Register ICR Field DescriptionsHwai Iporti Mporti Xporti Dporti Idlecfg Cpui 23. CPU Clock Domain Idle Requirements Valid Idle Configurations22. Idle Status Register Istr Field Descriptions Peripheral Domain Clock Gating Clock Configuration ProcessTo Idle the Following Module/Port XportSysclkdis MMCSD0CG DMA0CG Uartcg Spicg I2S3CGMMCSD0CG Anaregcg Anaregcg DMA3CG DMA2CG DMA1CG Usbcg Sarcg LcdcgUrtclkstpreq UrtclkstpackUsbclkstpack UsbclkstpreqUSB Domain Clock Gating Clock Generator Domain Clock GatingBit Field Emfclkstpack27. USB System Control Register Usbscr Field Descriptions USB System Control Register Usbscr 1C32hUsbpwdn Usbsessend Usbvbusdet Usbpllen UsbpwdnUsbdatpol RTC Domain Clock GatingUsboscbiasdis UsboscdisRTC Power Management Register Rtcpmgt 1930h Static Power Management29. RTC Interrupt Flag Register Rtcintfl Field Descriptions RTC Interrupt Flag Register Rtcintfl 1920hRAM Sleep Mode Control Register 1 RAMSLPMDCNTLR1 1C28h Internal Memory Low Power ModesMode CV DD Voltage 30. On-Chip Memory Standby Modes21. RAM Sleep Mode Control Register2 0x1C2A 31. Power Configurations Power ConfigurationsDV DDRTC, Ldoi IDLE3IDLE2 Procedure Core Voltage Scaling IDLE3 ProcedureHEX Bytes 32. Interrupt Table33. IFR0 and IER0 Bit Descriptions IFR and IER Registers34. IFR1 and IER1 Bit Descriptions Interrupt TimingRtos Dlog Berr I2C Emif Gpio USB SPI RTC RCV3 XMT3 RtosDMA Interrupt Enable and Aggregation Flag Registers Timer Interrupt Aggregation Flag Register Tiafr 1C14hGpio Interrupt Enable and Aggregation Flag Registers 35. Die ID Registers Device Identification36. Die ID Register 0 DIEIDR0 Field Descriptions Die ID Register 0 DIEIDR0 1C40hDie ID Register 1 DIEIDR1 1C41h 37. Die ID Register 1 DIEIDR1 Field Descriptions39. Die ID Register 3 DIEIDR3150 Field Descriptions Die ID Register 3 DIEIDR3150 1C43hDie ID Register 4 DIEIDR4 1C44h 40. Die ID Register 4 DIEIDR4 Field Descriptions42. Die ID Register 6 DIEIDR6 Field Descriptions Die ID Register 6 DIEIDR6 1C46hDie ID Register 7 DIEIDR7 1C47h 43. Die ID Register 7 DIEIDR7 Field DescriptionsExternal Bus Selection Register Ebsr Device Configuration44. Ebsr Register Bit Descriptions Field Descriptions LDO Control LDO Control Register 7004hA17MODE A16MODE45. Rtcpmgt Register Bit Descriptions Field Descriptions 47. LDO Controls Matrix 46. Ldocntl Register Bit Descriptions Field DescriptionsRtcpmgt Register Ldocntl Register Bgpd Bit Ldopd Bit Usbldoen BitEmifsr Output Slew Rate Control Register Osrcr 1C16hClkoutsr S05PD S04PD S03PD S02PD S01PD S00PD S15PD S14PD S13PD S12PD S11PD S10PDS15PD S05PDINT1PU INT1PU INT0PU Resetpu EMU01PU Tdipu Tmspu TckpuA20PD A19PD A18PD A17PD A16PD A15PD PD15PD A20PDDMA Controller Configuration DMA Synchronization Events DMA Configuration Registers52. Channel Synchronization Events for DMA Controllers 53. System Registers Related to the DMA Controllers54. DMA Interrupt Flag Register Dmaifr Field Descriptions 55. DMA Interrupt Enable Register Dmaier Field DescriptionsCH1EVT Peripheral ResetCH0EVT CH3EVTPeripheral Reset Control Register Prcr 1C05h Peripheral Software Reset Counter Register Psrcr 1C04hCount PG4RSTPG3RST Emif and USB Byte Access61. Effect of Usbscr Bytemode Bits on USB Access 60. Effect of Bytemode Bits on Emif AccessesBytemode Setting CPU Access to USB Register Emif System Control Register Escr 1C33hEdiv Emif Clock Divider Register Ecdr 1C26h63. Emif Clock Divider Register Ecdr Field Descriptions Rfid Products ApplicationsDSP

TMS3320C5515 specifications

The Texas Instruments TMS3320C5515 is a highly specialized digital signal processor (DSP) designed for a wide range of applications, including telecommunications, audio processing, and other signal-intensive tasks. As part of the TMS320 family of DSPs, the TMS3320C5515 leverages TI's extensive experience in signal processing technology, delivering robust performance and reliability.

One of the main features of the TMS3320C5515 is its 32-bit architecture, which allows for a high level of precision in digital signal computation. The processor is capable of executing complex mathematical algorithms, making it suitable for tasks that require high-speed data processing, such as speech recognition and audio filtering. With a native instruction set optimized for DSP applications, the TMS3320C5515 can perform multiply-accumulate operations in a single cycle, significantly enhancing computational efficiency.

The TMS3320C5515 employs advanced technologies including a Harvard architecture that separates instruction and data memory, enabling simultaneous access and improving performance. Its dual data buses enhance throughput by allowing multi-channel processing, making it particularly effective for real-time applications where timely data manipulation is critical. The device supports a wide range of peripherals, facilitating connections to various sensors and communication systems, which is vital in embedded applications.

In terms of characteristics, the TMS3320C5515 operates at an impressive clock speed, providing the computational power necessary to handle demanding tasks. The device is optimized for low power consumption, making it ideal for battery-operated applications without sacrificing performance. Its flexibility in processing algorithms also allows it to be readily adapted for specific requirements, from audio codecs to modems.

Another noteworthy aspect is the extensive development ecosystem surrounding the TMS3320C5515, which includes software tools, libraries, and support resources designed to accelerate the development process. This allows engineers and developers to bring their projects to market more quickly while minimizing risk.

Overall, the Texas Instruments TMS3320C5515 stands out as a powerful DSP solution, equipped with features that cater to the needs of various industries. Its combination of performance, efficiency, and versatile application makes it an attractive choice for engineers working in signal processing.
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