Documentation/hwmon/smsc47b397.rst

6   * SMSC LPC47B397-NC
8   * SMSC SCH5307-NS
20        - Mark M. Hoffman <mhoffman@lightlink.com>
21        - Utilitek Systems, Inc.
25 The following specification describes the SMSC LPC47B397-NC [1]_ sensor chip
27 provided by Craig Kelly (In-Store Broadcast Network) and edited/corrected
30 .. [1] And SMSC SCH5307-NS and SCH5317, which have different device IDs but are
33 -------------------------------------------------------------------------
36 -------------------------------------------------------------------------
42 and 0x61 (LSB). Currently we are using 0x480 for the HWM Base Address and
73 		LSB	MSB
83 	Reading the tach LSB locks the tach MSB.
84 	The LSB Must be read first.
87 --------------------------------------
89 The tach reading (TCount) is given by: (Tach MSB * 256) + (Tach LSB)
100 RPM = 60 / (2203 * 11.11111 E-6) = 2451 RPM
105 ----------------------
131 	logical device to the INDEX PORT and then write or read the config-
167 The Device ID will read 0x6F (0x81 for SCH5307-NS, and 0x85 for SCH5317)
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