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AT32F413
Series Reference Manual
2022.06.27
Page 158
Rev 2.00
12.11.7 Guard time and divider register (GDIV)
Bit
Register
Reset value
Type
Description
Bit 31: 16 Reserved
0x0000
resd
Forced to be 0 by hardware.
Bit 15: 8
SCGT
0x00
rw
Smartcard guard time value
This field specifies the guard time value. The transmission
complete flag is set after this guard time in smartcard
mode.
Bit 7: 0
ISDIV
0x00
rw
IrDA/smartcard division
In IrDA mode:
8 bit [7: 0] is valid. It is valid in common mode and must be
set to 00000001. In low-power mode, it divides the
peripheral clock to serve as the period base of the pulse
width;
00000000: Reserved–Do not write.
00000001: Divided by 1
00000010: Divided by 2
……
Smartcard mode:
the lower 5 bit [4: 0] is valid. This division is used to divide
the peripheral clock to provide clock for the Smartcard.
Configured as follows:
00000: Reserved–Do not write.
00001: Divided by 2
00010: Divided by 4
00011: Divided by 6
……