BCM89359 Advance Data Sheet
SPROM Interface
SPROM Interface
Various hardware configuration parameters may be stored in an external SPROM instead of the OTP. The
SPROM is read by system software after device reset. In addition, depending on the board design, customer-
specific parameters may be stored in SPROM.
The four SPROM control signals —SPROM_CS, SPROM_CLK, SPROM_MI, and SPROM_MO are
multiplexed on the SDIO interface (see Table 22: “GPIO Alternative Signal Functions,” on page 85 for additional
details). By default, the SPROM interface supports 2 kbit serial SPROMs, and it can also support 4 kbit and 16
kbit serial SPROMs by using the appropriate board parameters.
Broadcom®
September 9, 2014 • 89359-DS100-R
Page 58
BROADCOM CONFIDENTIAL
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