 English |
|
|
|
|
|
|
|
| DRA722_17 Datasheet, PDF (323/408 Pages) Texas Instruments – Infotainment Applications Processor | |||
| |||
| ◁ |
www.ti.com
DRA722, DRA724, DRA725, DRA726
SPRS956B â MARCH 2016 â REVISED JANUARY 2017
Table 7-137. Switching Characteristics for MMC3 - SDR50 Mode (2) (continued)
NO. PARAMETER
DESCRIPTION
SDR505 td(clkL-cmdV)
SDR506 td(clkL-dV)
Delay time, mmc3_clk falling clock edge to mmc3_cmd transition
Delay time, mmc3_clk falling clock edge to mmc3_dat[i:0] transition
(1) P = output mmc3_clk period in ns
(2) i in [i:0] = 7
MIN
-3.66
-3.66
MAX
1.46
1.46
UNIT
ns
ns
SDR501
SDR502L
SDR502H
mmcj_clk
mmcj_cmd
SDR503
SDR507
SDR504
SDR508
mmcj_dat[7:0]
SPRS906_TIMING_MMC3_05
Figure 7-92. MMC/SD/SDIOj in - High Speed SDR50 - Receiver Mode
mmcj_clk
mmcj_cmd
mmcj_dat[7:0]
SDR501
SDR502H
SDR502L
SDR505
SDR505
SDR506
SDR506
SPRS906_TIMING_MMC3_06
Figure 7-93. MMC/SD/SDIOj in - High Speed SDR50 - Transmitter Mode
NOTE
To configure the desired Manual IO Timing Mode the user must follow the steps described in
section Manual IO Timing Modes of the Device TRM.
The associated registers to configure are listed in the CFG REGISTER column. For more
information see the Control Module chapter in the Device TRM.
Manual IO Timings Modes must be used to guaranteed some IO timings for MMC3. See Table 7-2 Modes
Summary for a list of IO timings requiring the use of Manual IO Timings Modes. See Table 7-138 Manual
Functions Mapping for MMC3 for a definition of the Manual modes.
Table 7-138 lists the A_DELAY and G_DELAY values needed to calculate the correct values to be set in
the CFG_x registers.
BALL
AD4
AD4
AC4
AC4
AC4
AC7
BALL NAME
mmc3_clk
mmc3_clk
mmc3_cmd
mmc3_cmd
mmc3_cmd
mmc3_dat0
Table 7-138. Manual Functions Mapping for MMC3
MMC3_MANUAL1
A_DELAY (ps)
G_DELAY (ps)
1085
21
1269
0
0
0
128
0
98
0
0
0
CFG REGISTER
CFG_MMC3_CLK_IN
CFG_MMC3_CLK_OUT
CFG_MMC3_CMD_IN
CFG_MMC3_CMD_OEN
CFG_MMC3_CMD_OUT
CFG_MMC3_DAT0_IN
MUXMODE
0
mmc3_clk
mmc3_clk
mmc3_cmd
mmc3_cmd
mmc3_cmd
mmc3_dat0
Copyright © 2016â2017, Texas Instruments Incorporated
Timing Requirements and Switching Characteristics 323
Submit Documentation Feedback
Product Folder Links: DRA722 DRA724 DRA725 DRA726
|
▷ |
German
Russian
Spanish
Italian
Polish
Chinese
Japanese
Korean
French
Portuguese