Sdio Bus Timing Specifications In Ddr50; Mode - Infineon Cypress CYW43353 Manual

Table 49. SDIO Bus Output Timing Parameters (SDR Modes 100 MHz to 208 MHz)
Symbol Minimum
t 0
OP
Δt –350
OP
t 0.60
ODW
Δt = +1550 ps for junction temperature of Δt
■
OP
Δt = –350 ps for junction temperature of Δt
■
OP
Δt = +2600 ps for junction temperature of Δt
■
OP
18.1.4 SDIO Bus Timing Specifications in DDR50 Mode
SDIO_CLK
Document Number: 002-14949 Rev. *G
PRELIMINARY
Maximum
2
+1550
–
= 90 degrees during operation
OP
= –20 degrees during operation
OP
= –20 to +125 degrees during operation
OP
Figure 38. Δt Consideration for Variable Data Window (SDR 104 Mode)
OP
t
1550 ps
t =
OP
–350 ps
Figure 39. SDIO Clock Timing (DDR50 Mode)
t
CR
Unit
UI Card output phase
ps Delay variation due to temp change after tuning
UI t =2.88 ns @208 MHz
ODW
Data valid window
Sampling point after tuning
=
OP
Data valid window
Sampling point after card junction heating
by +90°C from tuning temperature
Data valid window
Sampling point after card junction cooling
by –20°C from tuning temperature
t
CLK
t
CF
CYW43353
Comments
t
CR
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