ZHCSKS2E april 2020 – june 2023 DRA821U , DRA821U-Q1
PRODUCTION DATA
MMCSD0 interface is compliant with the JEDEC eMMC electrical standard v5.1 (JESD84-B51) and it supports the following eMMC applications:
Table 7-54 presents the required DLL software configuration settings for MMC0 timing modes.
REGISTER NAME | MMCSD0_SS_PHY_CTRL_4_REG | MMCSD0_SS_PHY_CTRL_5_REG | |||||||
---|---|---|---|---|---|---|---|---|---|
BIT FIELD | [31:24] | [20] | [15:12] | [8] | [4:0] | [17:16] | [10:8] | [2:0] | |
BIT FIELD NAME | STRBSEL | OTAPDLYENA | OTAPDLYSEL | ITAPDLYENA | ITAPDLYSEL | SELDLYTXCLK SELDLYRXCLK |
FRQSEL | CLKBUFSEL | |
MODE | DESCRIPTION | 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 1.8 V, 25 MHz | 0x0 | 0x0 | NA | 0x1 | 0x10 | 0x1 | 0x0 | 0x7 |
High Speed SDR | 8-bit PHY operating 1.8 V, 50 MHz | 0x0 | 0x0 | NA | 0x1 | 0xA | 0x1 | 0x0 | 0x7 |
High Speed DDR | 8-bit PHY operating 1.8 V, 50 MHz | 0x0 | 0x1 | 0x6 | 0x1 | 0x3 | 0x0 | 0x4 | 0x7 |
HS200 | 8-bit PHY operating 1.8 V, 200 MHz | 0x0 | 0x1 | 0x8 | 0x1 | Tuning | 0x0 | 0x0 | 0x7 |
HS400 | 8-bit PHY operating 1.8 V, 200 MHz | 0x77 | 0x1 | 0x5 | 0x1 | Tuning | 0x0 | 0x0 | 0x7 |
Table 7-84 represents MMCSD0 timing conditions.
PARAMETER | MIN | MAX | UNIT | |||
---|---|---|---|---|---|---|
INPUT CONDITIONS | ||||||
SRI | Input slew rate | Legacy SDR | 0.05 | 1.24 | V/ns | |
High Speed SDR | 0.3 | 1.65 | V/ns | |||
High Speed DDR (CMD) [DDR52] | 0.3 | 1.65 | V/ns | |||
High Speed DDR (DAT[7:0]) [DDR52] | 0.3 | 1.65 | V/ns | |||
OUTPUT CONDITIONS | ||||||
CL | Output load capacitance | Legacy SDR | 1 | 18 | pF | |
High Speed SDR | 1 | 18 | pF | |||
High Speed DDR | 1 | 18 | pF | |||
HS200 | 1 | 12 | pF | |||
HS400 | 1 | 6 | 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 | 100 | ps | ||
High Speed DDR, HS200, HS400 | 8 | ps |