SPRSP91C February 2023 – November 2025 AM68 , AM68A
PRODUCTION DATA
Refer to the PDF data sheet for device specific package drawings
MMC0 interface is compliant with the JEDEC eMMC electrical standard v5.1 (JESD84-B51) and it supports the following eMMC applications:
Table 6-59 presents the required DLL software configuration settings for MMC0 timing modes.
| REGISTER NAME | MMCSD0_MMC_SSCFG_PHY_CTRL_x_REG | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| x = 1 | x = 4 | x = 5 | ||||||||
| BIT FIELD | [1] | [31:24] | [20] | [15:12] | [8] | [4:0] | [17:16] | [10:8] | [2:0] | |
| BIT FIELD NAME | ENDLL | STRBSEL | OTAPDLYENA | OTAPDLYSEL | ITAPDLYENA | ITAPDLYSEL | SELDLYTXCLK SELDLYRXCLK |
FRQSEL | CLKBUFSEL | |
| MODE | DESCRIPTION | ENABLE DLL |
STROBE DELAY |
OUTPUT DELAY ENABLE |
OUTPUT DELAY VALUE |
INPUT DELAY ENABLE |
INPUT DELAY VALUE |
DLL/ DELAY CHAIN SELECT |
DLL REF FREQUENCY |
DELAY BUFFER DURATION |
| Legacy SDR | 8-bit PHY operating 1.8V, 25MHz | 0x0 | 0x0 | 0x0 | NA(1) | 0x1 | 0x10 | 0x1 or 0x3(2) |
NA(3) | 0x7 |
| High Speed SDR | 8-bit PHY operating 1.8V, 50MHz | 0x0 | 0x0 | 0x0 | NA(1) | 0x1 | 0xA | 0x1 or 0x3(2) |
NA(3) | 0x7 |
| High Speed DDR | 8-bit PHY operating 1.8V, 50MHz | 0x1 | 0x0 | 0x1 | 0x6 | 0x1 | Tuning(5) | 0x0 | 0x4 | NA(4) |
| HS200 | 8-bit PHY operating 1.8V, 200MHz | 0x1 | 0x0 | 0x1 | 0x8 | 0x1 | Tuning(5) | 0x0 | 0x0 | NA(4) |
| HS400 | 8-bit PHY operating 1.8V, 200MHz | 0x1 | 0x66 | 0x1 | 0x5 | 0x1 | Tuning(5) | 0x0 | 0x0 | NA(4) |
Table 6-60 presents timing conditions for MMC0.
| PARAMETER | MIN | MAX | UNIT | |||
|---|---|---|---|---|---|---|
| INPUT CONDITIONS | ||||||
| SRI | Input slew rate | Legacy SDR | 0.14 | 1.44 | V/ns | |
| High Speed SDR | 0.3 | 0.90 | V/ns | |||
| High Speed DDR (CMD) | 0.3 | 0.90 | V/ns | |||
| High Speed DDR (DAT[7:0]) | 0.45 | 0.90 | V/ns | |||
| OUTPUT CONDITIONS | ||||||
| CL | Output load capacitance | HS200, HS400 | 1 | 6 | pF | |
| All other modes | 1 | 12 | pF | |||
| PCB CONNECTIVITY REQUIREMENTS | ||||||
| td(Trace Delay) | Propagation delay of each trace | All modes | 134 | 756 | ps | |
| td(Trace Mismatch Delay) | Propagation delay mismatch across all traces | Legacy SDR, High Speed SDR, High Speed DDR | 100 | ps | ||
| HS200, HS400 | 8 | ps | ||||