BCM4354 Data Sheet
SDIO Timing
Device Output Timing
Figure 41: SDIO Bus Output Timing (SDR Modes up to 100 MHz)
tCLK
SDIO_CLK
tODLY
tOH
CMD input
DAT[3:0] input
Table 55: SDIO Bus Output Timing Parameters (SDR Modes up to 100 MHz)
Symbol
tODLY
tODLY
tOH
Minimum
Maximum
Unit
ns
Comments
–
7.5
14.0
–
tCLK ≥ 10 ns CL= 30 pF using driver type B for SDR50
tCLK ≥ 20 ns CL= 40 pF using for SDR12, SDR25
Hold time at the tODLY (min.) CL= 15 pF
–
ns
1.5
ns
Figure 42: SDIO Bus Output Timing (SDR Modes 100 MHz to 208 MHz)
tCLK
SDIO_CLK
tOP
tODW
CMD input
DAT[3:0] input
Broadcom®
October 15, 2014 • 4354-DS109-R
Page 172
BROADCOM CONFIDENTIAL