Document Number: MSC8254 Freescale Semiconductor Rev. 7, 7/2013 Data Sheet MSC8254 Quad-Core Digital Signal Processor FC-PBGA783 29 mm 29 mm Four StarCore SC3850 DSP subsystems, each with an SC3850 High-speed serial interface that supports two Serial RapidIO DSP core, 32 Kbyte L1 instruction cache, 32 Kbyte L1 data cache, interfaces, one PCI Express interface, and two SGMII interfaces unified 512 Kbyte L2 cache configurable as M2 memory in (multiplexed). The Serial RapidIO interfaces support 1x/4x 64 Kbyte increments, memory management unit (MMU), operation up to 3.125 Gbaud with a single messaging unit and two extended programmable interrupt controller (EPIC), two DMA units. The PCI Express controller supports 32- and 64-bit general-purpose 32-bit timers, debug and profiling support, addressing, x4, x2, and x1 link. low-power Wait, Stop, and power-down processing modes, and QUICC Engine technology subsystem with dual RISC ECC/EDC support. processors, 48 Kbyte multi-master RAM, 48 Kbyte instruction Chip-level arbitration and switching system (CLASS) that RAM, supporting two communication controllers for two Gigabit provides full fabric non-blocking arbitration between the cores Ethernet interfaces (RGMII or SGMII), to offload scheduling and other initiators and the M2 memory, shared M3 memory, tasks from the DSP cores, and an SPI. DDR SRAM controllers, device configuration control and status I/O Interrupt Concentrator consolidates all chip maskable registers, and other targets. interrupt and non-maskable interrupt sources and routes then to 1056 Kbyte 128-bit wide M3 memory, 1024 Kbytes of which can INT OUT, NMI OUT, and the cores. be turned off to save power. UART that permits full-duplex operation with a bit rate of up to 96 Kbyte boot ROM. 6.25 Mbps. Three input clocks (one global and two differential). Two general-purpose 32-bit timers for RTOS support per SC3850 Five PLLs (three global and two Serial RapidIO PLLs). core, four timer modules with four 16-bit fully programmable Two DDR controllers with up to a 400 MHz clock (800 MHz data timers, and eight software watchdog timers (SWT). rate), 64/32 bit data bus, supporting up to a total 2 Gbyte in up to Eight programmable hardware semaphores. four banks (two per controller) and support for DDR2 and DDR3. Up to 32 virtual interrupts and a virtual NMI asserted by simple DMA controller with 32 unidirectional channels supporting 16 write access. 2 memory-to-memory channels with up to 1024 buffer descriptors I C interface. per channel, and programmable priority, buffer, and multiplexing Up to 32 GPIO ports, sixteen of which can be configured as configuration. It is optimized for DDR SDRAM. external interrupts. Up to four independent TDM modules with programmable word Boot interface options include Ethernet, Serial RapidIO interface, 2 size (2, 4, 8, or 16-bit), hardware-base A-law/-law conversion, I C, and SPI. up to 62.5 Mbps data rate for each TDM link, and with glueless Supports standard JTAG interface interface to E1 or T1 framers that can interface with Low power CMOS design, with low-power standby and H-MVIP/H.110 devices, TSI, and codecs such as AC-97. power-down modes, and optimized power-management circuitry. 45 nm SOI CMOS technology. 20082013 Freescale Semiconductor, Inc. All rights reserved.Table of Contents 1 Pin Assignment .4 Figure 10.SGMII Transmitter DC Measurement Circuit . 35 1.1 FC-PBGA Ball Layout Diagram 4 Figure 11.DDR2 and DDR3 SDRAM Interface Input Timing 1.2 Signal List By Ball Location .5 Diagram . 37 2 Electrical Characteristics 23 Figure 12.MCK to MDQS Timing 39 2.1 Maximum Ratings .23 Figure 13.DDR SDRAM Output Timing . 39 2.2 Recommended Operating Conditions 24 Figure 14.DDR2 and DDR3 Controller Bus AC Test Load . 40 2.3 Thermal Characteristics 25 Figure 15.DDR2 and DDR3 SDRAM Differential Timing 2.4 CLKIN Requirements 26 Specifications 40 2.5 DC Electrical Characteristics 26 Figure 16.Differential Measurement Points for Rise and Fall Time 41 2.6 AC Timing Characteristics .36 Figure 17.Single-Ended Measurement Points for Rise and Fall Time 3 Hardware Design Considerations 53 Matching 42 3.1 Power Supply Ramp-Up Sequence 53 Figure 18.Single Frequency Sinusoidal Jitter Limits . 44 3.2 PLL Power Supply Design Considerations 56 Figure 19.SGMII AC Test/Measurement Load 44 3.3 Clock and Timing Signal Board Layout Considerations 57 Figure 20.TDM Receive Signals 46 3.4 SGMII AC-Coupled Serial Link Connection Example 58 Figure 21.TDM Transmit Signals 47 3.5 Connectivity Guidelines 58 Figure 22.TDM AC Test Load 47 3.6 Guide to Selecting Connections for Remote Power Figure 23.Timer AC Test Load 47 Supply Sensing .64 Figure 24.MII Management Interface Timing . 48 4 Ordering Information 64 Figure 25.RGMII AC Timing and Multiplexing 49 5 Package Information 65 Figure 26.SPI AC Test Load . 50 6 Product Documentation .66 Figure 27.SPI AC Timing in Slave Mode (External Clock) . 50 7 Revision History .66 Figure 28.SPI AC Timing in Master Mode (Internal Clock) 51 Figure 29.Test Clock Input Timing . 52 Figure 30.Boundary Scan (JTAG) Timing . 52 List of Figures Figure 31.Test Access Port Timing 53 Figure 1. MSC8254 Block Diagram 3 Figure 32.TRST Timing . 53 Figure 2. StarCore SC3850 DSP Subsystem Block Diagram 3 Figure 33.Supply Ramp-Up Sequence with V Ramping Before DD Figure 3. MSC8254 FC-PBGA Package, Top View 4 V and CLKIN Starting With V . 54 DDIO DDIO Figure 4. Differential Voltage Definitions for Transmitter or Figure 34.Supply Ramp-Up Sequence . 55 Receiver 28 Figure 35.Reset Connection in Functional Application . 55 Figure 5. Receiver of SerDes Reference Clocks . 30 Figure 36.Reset Connection in Debugger Application 56 Figure 6. SerDes Transmitter and Receiver Reference Circuits 31 Figure 37.PLL Supplies . 56 Figure 7. Differential Reference Clock Input DC Requirements Figure 38.SerDes PLL Supplies 57 (External DC-Coupled) . 31 Figure 39.4-Wire AC-Coupled SGMII Serial Link Connection Figure 8. Differential Reference Clock Input DC Requirements Example . 58 (External AC-Coupled) . 32 Figure 40.MSC8254 Mechanical Information, 783-ball FC-PBGA Figure 9. Single-Ended Reference Clock Input DC Requirements 32 Package . 65 MSC8254 Quad-Core Digital Signal Processor Data Sheet, Rev. 7 2 Freescale Semiconductor