Sdio Bus Timing Specifications In Sdr Modes - Infineon Cypress CYW43353 Manual

18.1.3 SDIO Bus Timing Specifications in SDR Modes

18.1.3.1. Clock Timing
SDIO_CLK
Table 46. SDIO Bus Clock Timing Parameters (SDR Modes)
Parameter Symbol
– t
CLK
– t , t
CR CF
Clock duty cycle –
Document Number: 002-14949 Rev. *G
PRELIMINARY
Figure 34. SDIO Clock Timing (SDR Modes)
t
CR
Minimum Maximum
40 –
20 –
10 –
4.8 –
– 0.2 × t
CLK
30 70
t
CLK
t
CF
Unit
ns SDR12 mode
ns SDR25 mode
ns SDR50 mode
ns SDR104 mode
ns t , t < 2.00 ns (max.) @100 MHz, C
CR CF
t , t < 0.96 ns (max.) @208 MHz, C
CR CF
% –
CYW43353
t
CR
Comments
= 10 pF
CARD
= 10 pF
CARD
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