Smbus: Fmpi2C_Timeoutr Register Configuration Examples; Smbus Slave Mode; Table 97. Examples Of Timeouta Settings For Various Fmpi2Cclk Frequencies - ST STM32F410 Reference Manual

RM0401
Refer to
(max tIDLE = 50 µs)
Caution: Changing the TIMEOUTA and TIDLE configuration is not allowed when the TIMEOUTEN is
set.
SMBus:
22.4.13
This section is relevant only when SMBus feature is supported. Refer to
FMPI2C
•
Configuring the maximum duration of t
Table 95. Examples of TIMEOUTA settings for various FMPI2CCLK frequencies
f
I2CCLK
8 MHz
16 MHz
•
Configuring the maximum duration of t
Table 96. Examples of TIMEOUTB settings for various FMPI2CCLK frequencies
f
I2CCLK
8 MHz
16 MHz
• Configuring the maximum duration of t

Table 97. Examples of TIMEOUTA settings for various FMPI2CCLK frequencies

f
I2CCLK
8 MHz
16 MHz
22.4.14

SMBus slave mode

This section is relevant only when SMBus feature is supported. Refer to
FMPI2C
In addition to FMPI2C slave transfer management (refer to
mode) some additional software flowcharts are provided to support SMBus.
SMBus Slave transmitter
When the IP is used in SMBus, SBC must be programmed to '1' in order to allow the PEC
transmission at the end of the programmed number of data bytes. When the PECBYTE bit
is set, the number of bytes programmed in NBYTES[7:0] includes the PEC transmission. In
that case the total number of TXIS interrupts is NBYTES-1 and the content of the
Fast-mode Plus Inter-integrated circuit (FMPI2C) interface
Table 97: Examples of TIMEOUTA settings for various FMPI2CCLK frequencies
FMPI2C_TIMEOUTR register configuration examples
implementation.
TIMEOUTA[11:0] bits
0x61
0xC3
TIMEOUTB[11:0] bits
0x1F
0x3F
TIMEOUTA[11:0] bits
0x63
0xC7
implementation.
to 25 ms:
TIMEOUT
(max t = 25 ms)
TIMEOUT
TIDLE bit TIMEOUTEN bit
0 1
0 1
and t
LOW:SEXT
TEXTEN bit
1
1
to 50 µs
IDLE
(max t = 50 µs)
IDLE
TIDLE bit TIMEOUTEN bit
1 1
1 1
RM0401 Rev 3
Section 22.3:
t
TIMEOUT
98 x 2048 x 125 ns = 25 ms
196 x 2048 x 62.5 ns = 25 ms
to 8 ms:
LOW:MEXT
t
LOW:EXT
32 x 2048 x 125 ns = 8 ms
64 x 2048 x 62.5 ns = 8 ms
t
TIDLE
100 x 4 x 125 ns = 50 µs
200 x 4 x 62.5 ns = 50 µs
Section 22.3:
Section 22.4.8: FMPI2C slave
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