BCM4339 Preliminary Data Sheet
WLAN GPIO Signals and Strapping Options
Table 23: Host Interface Selection (FCBGA Package only)
SPROM_DISABL
PCIE_DISABLE Ea
SDIO_SEL SPI_SEL
Mode
1
1
0
0
0
X
X
1
1
0
0
1
0
1
0
X
X
X
X
0
SDIO and PCIe mode
SDIO mode
gSPI and PCIe mode
gSPI mode
PCIe mode with SPROM on the SDIO pinsb
PCIe mode (no SPROM)
0
0
0
1
a. SPROM_DISABLE strapping is valid only in the FCBGA package and only used if SDIO/gSPI is disabled.
b. SPROM is only available for PCIe mode.
Table 24: Host Interface Selection (WLBGA and WLCSP Packagesa)
SDIO_SEL
SPI_SEL
CPULESS
Mode
1
0
0
0
X
1
0
0
X
X
0
1
SDIO Mode (3.3V or 1.8V I/O)
gSPI Mode (3.3V or 1.8V I/O)
Unsupported
Unsupported
a. PCIe and SPROM modes are not available in the WLBGA and WLCSP packages.
Table 25: OTP/SPROM Select
Mode
SDIO CIS
PCIE Configuration
PCIe Disabled
From OTP if OTP is programmed;
ELSE default CIS.
–
PCIe Enabled
Default CIS
From SPROM if SPROM is present;
ELSE from OTP (if programmed);
ELSE default configuration.
Broadcom®
November 17, 2014 • 4339-DS106-R
Page 115
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