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-rw-r--r--nuttx/configs/eagle100/README.txt4
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diff --git a/nuttx/configs/eagle100/README.txt b/nuttx/configs/eagle100/README.txt
index cc6cf3944..4182582bd 100644
--- a/nuttx/configs/eagle100/README.txt
+++ b/nuttx/configs/eagle100/README.txt
@@ -205,6 +205,10 @@ Eagle100-specific Configuration Options
CONFIG_SSI_POLLWAIT - Select to disable interrupt driven SSI support.
Poll-waiting is recommended if the interrupt rate would be to
high in the interrupt driven case.
+ CONFIG_SSI_TXLIMIT - Write this many words to the Tx FIFO before
+ emptying the Rx FIFO. If the SPI frequency is high and this
+ value is large, then larger values of this setting may cause
+ Rx FIFO overrun errors. Default: half of the Tx FIFO size (4).
CONFIG_LM3S_ETHERNET - This must be set (along with CONFIG_NET)
to build the LM3S Ethernet driver