BCM43455 Preliminary Data Sheet
SDIO Timing
Card Output Timing
Figure 38: SDIO Bus Output Timing (SDR Modes up to 100 MHz)
tCLK
SDIO_CLK
tODLY
tOH
CMD input
DAT[3:0] input
Table 57: SDIO Bus Output Timing Parameters (SDR Modes up to 100 MHz)
Symbol
Minimum
Maximum
Unit
Comments
t
t
t
–
7.5
14.0
–
ns
ns
ns
t
t
≥ 10 ns C = 30 pF using driver type B for SDR50
L
ODLY
ODLY
OH
CLK
–
≥ 20 ns C = 40 pF using for SDR12, SDR25
L
CLK
1.5
Hold time at the t
(min) C = 15 pF
ODLY L
Figure 39: SDIO Bus Output Timing (SDR Modes 100 MHz to 208 MHz)
tCLK
SDIO_CLK
tOP
tODW
CMD input
DAT[3:0] input
Broadcom®
November 5, 2015 • 43455-DS109-R
Page 144
BROADCOM CONFIDENTIAL
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