BCM4339XKWBGT Datasheet, PDF (163/183 Pages) Cypress Semiconductor – Single-Chip 5G WiFi IEEE 802.11ac MAC/Baseband/Radio with Integrated Bluetooth 4.1 and FM Receiver

BCM4339 Preliminary Data Sheet
SDIO Bus Timing Specifications in SDR Modes
Clock Timing
Figure 45: SDIO Clock Timing (SDR Modes)
t_CLK
SDIO/gSPI Timing
SDIO_CLK
t_CR
t_CF
t_CR
Parameter
–
–
Clock duty
cycle
Table 54: SDIO Bus Clock Timing Parameters (SDR Modes)
Symbol
t_CLK
t_CR, t_CF
–
Minimum
40
20
10
4.8
–
Maximum
–
–
–
–
0.2 × t_CLK
Unit
ns
ns
ns
ns
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^®
November 17, 2014 • 4339-DS106-R
Page 162