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OMAP-L137 to OMAP-L138 Migration

Brad Griffis
Guru*** 125430 points
Other Parts Discussed in Thread: OMAP-L138, OMAP-L137

Does anyone have any documentation on moving from OMAP-L137 to OMAP-L138?  For example:

  • List of peripherals that are common to both devices
  • List of new peripherals in OMAP-L138
  • Pinout is obviously different and so pin-mux configuration will change as well.

I imagine most of this info can be found by simply comparing memory maps but I thought I'd ask the question in case someone has already done the work!

  • 0
    TI__Guru*** 125430 points

    Here's a first level swag at this...  Comparing memory maps of OMAP-L137 and OMAP-L138 I see the following differences...

    Peripherals that don't change (e.g. same base address and everything)

    • ARM and DSP RAM
    • Shared RAM
    • DSP interrupt controller
    • EDMA3 CC, TC0, TC1
    • PSC0, PSC1
    • PLL Controller 0
    • SYSCFG(0)
    • Timer 0, Timer 1
    • I2C0, I2C1
    • RTC
    • MMC/SD0
    • SPI0
    • UART0
    • McASP0
    • UART1, UART2
    • USB0, USB1
    • UHPI
    • LCD
    • MPU1, MPU2
    • EMAC + MDIO
    • GPIO
    • eHRPWM0, eHRPWM1

    Peripherals that changed base address

    • SPI 1

    Peripherals that were added to OMAP-L138 that don't exist on OMAP-L137

    • McBSP0, McBSP1 (with audio FIFOs)
    • UPP
    • VPIF
    • SATA
    • PLL 1
    • MMC/SD 1
    • SYSCFG 1
    • EDMA3 CC1, TC2
    • Timer2, Timer3
    • DDR controller

    Peripherals that were on OMAP-L137 but are not on OMAP-L138

    • McASP1, McASP2
    • eHRPWM2
    • EQEP0, EQEP1
    • EMIFB SDRAM (replaced by DDR controller)

    Other differences

    • OMAP-L138 has more chip selects on the SPI peripherals
    • OMAP-L138 supports both 1.8V and 3.3V I/O rails
    • OMAP-L138 supports dynamic voltage and frequency scaling for the CPU supply rail
    • Different package, pinout, and muxing options

    OMAP-L138 packages

    • 13 mm x 13 mm, 361-Ball 0.65 mm pitch, PBGA (ZCE)
    • 16 mm x 16 mm, 361-Ball 0.80 mm pitch, PBGA (ZWT)

    OMAP-L137 package

    • 17 mm x 17 mm, 256-Ball 1 mm pitch, PBGA (ZKB)