|
BCM43455 Datasheet, PDF (70/159 Pages) Cypress Semiconductor – Single-Chip 5G WiFi IEEE 802.11ac MAC/Baseband/ Radio with Integrated Bluetooth 4.1 and FM Receiver | |||
|
◁ |
BCM43455 Preliminary Data Sheet
SDIO Pins
DATA0
DATA1
DATA2
DATA3
CLK
CMD
Table 16: SDIO Pin Description
SD 4-Bit Mode
Data line 0
Data line 1 or Interrupt
Data line 2 or Read Wait
Data line 3
Clock
Command line
DATA
IRQ
RW
N/C
CLK
CMD
SD 1-Bit Mode
Data line
Interrupt
Read Wait
Not used
Clock
Command line
Figure 25: Signal Connections to SDIO Host (SD 4-Bit Mode)
SD Host
CLK
CMD
DAT[3:0]
BCM43455
SDIO v3.0
Figure 26: Signal Connections to SDIO Host (SD 1-Bit Mode)
SD Host
CLK
CMD
DATA
IRQ
RW
BCM43455
Note: Per Section 6 of the SDIO specification, pull-ups in the 10 k⦠to 100 k⦠range are required on
the four DATA lines and the CMD line. This requirement must be met during all operating states either
through the use of external pull-up resistors or through proper programming of the SDIO hostâs internal
pull-ups.
Broadcom®
November 5, 2015 ⢠43455-DS109-R
BROADCOM CONFIDENTIAL
Page 69
|
▷ |