LG HB620 Service Manual page 72

3.11.2 MMC interface
The MSM6280 has a 4-bit SD interface as shown below. It supports 4-bits of data and a command
signal.
■ Supports 4-bit SD, 1-bit SD, and 1-bit MMC interface
■ SW configurable edge latching (falling or rising)
■ SW configurable data and command values change (rising or falling edge)
■ Clock gating for power saving (and a power-saving option to always turn the clock off when bus is
idle)
■ Flow control option to prevent overflow and underflow
■ MCLK output up to 25 MHz
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3. TECHNICAL BRIEF
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