BCM43903 Datasheet, PDF (51/87 Pages) Cypress Semiconductor – WICED™ IEEE 802.11 b/g/n SoC with an Embedded Applications Processor

BCM43903 Preliminary Data Sheet
Strapping Options
Strapping Options
Table 8 provides the strapping options.
Table 8: Strapping Options
Pin Name
Strap
#
GPIO_1
GSPI_MODE
D1
GPIO_7
WCPU_BOOT_MODE
E5
GPIO_11
ACPU_BOOT_MODE
B1
GPIO_13
SDIO_MODE
E8
GPIO_15
VTRIM_EN
A2
RF_SW_CTRL_5 DAP_CLK_SEL
M10
RF_SW_CTRL_7 RSRC_INIT_MODE
L12
Default
Internal Pull
During Strap
PD
PD
PD
PD
PD
PD
PD
Description
Enable gSPI interface
Boot from SoC SROM or SoC SRAM
Boot from tightly coupled memory (TCM) ROM or TCM RAM
Select either SDIO host mode or SDIO device mode
Enable PMU voltage trimming
Select XTAL clock or the test clock (tck) for the debug access port
(DAP)
PMU resource initialization mode selection
Broadcom^®
March 12, 2016 • 43903-DS102-R
BROADCOM CONFIDENTIAL
Page 50