BCM4354KKWBGT Datasheet, PDF (171/192 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 SDR Modes
Clock Timing
Figure 39: SDIO Clock Timing (SDR Modes)
t_CLK
SDIO_CLK
t_CR
t_CF
t_CR
SDIO Timing
Parameter
–
–
Clock duty
Table 53: SDIO Bus Clock Timing Parameters (SDR Modes)
Symbol
t_CLK
t_CR, t_CF
–
Minimum
40
20
10
4.8
–
Maximum Unit
–
ns
–
ns
–
ns
–
ns
0.2 × t_CLK ns
30
70
%
Comments
SDR12 mode
SDR25 mode
SDR50 mode
SDR104 mode
t_CR, t_CF < 2.00 ns (max.) @100 MHz,
C_CARD = 10 pF
t_CR, t_CF < 0.96 ns (max.) @208 MHz,
C_CARD = 10 pF
–
Broadcom^®
October 15, 2014 • 4354-DS109-R
BROADCOM CONFIDENTIAL
Page 170