BCM4354KKWBGT Datasheet, PDF (175/192 Pages) Cypress Semiconductor – Single-Chip 5G Wi-Fi IEEE 802.11ac 2×2 MAC/ Baseband/Radio with Integrated Bluetooth 4.1 and FM Receiver

BCM4354 Data Sheet
SDIO Bus Timing Specifications in DDR50 Mode
Figure 44: SDIO Clock Timing (DDR50 Mode)
t_CLK
SDIO_CLK
t_CR
t_CF
t_CR
SDIO Timing
Parameter
–
–
Clock duty
Table 57: SDIO Bus Clock Timing Parameters (DDR50 Mode)
Symbol
t_CLK
t_CR,t_CF
Minimum
20
–
Maximum Unit
–
ns
0.2 × tCLK ns
–
45
55
%
Comments
DDR50 mode
t_CR, t_CF < 4.00 ns (max.) @50 MHz,
C_CARD = 10 pF
–
Broadcom^®
October 15, 2014 • 4354-DS109-R
BROADCOM CONFIDENTIAL
Page 174