ST STM32F101xx User Manual

RM0008 Advanced-control timers (TIM1&TIM8)
Doc ID 13902 Rev 12 343/1096
14.4.19 TIM1&TIM8 DMA control register (TIMx_DCR)
Address offset: 0x48
Reset value: 0x0000
Bits 7:0 DTG[7:0]: Dead-time generator setup
This bit-field defines the duration of the dead-time inserted between the complementary
outputs. DT correspond to this duration.
DTG[7:5]=0xx => DT=DTG[7:0]x t
dtg
with t
dtg
=t
DTS
.
DTG[7:5]=10x => DT=(64+DTG[5:0])xt
dtg
with T
dtg
=2xt
DTS
.
DTG[7:5]=110 => DT=(32+DTG[4:0])xt
dtg
with T
dtg
=8xt
DTS
.
DTG[7:5]=111 => DT=(32+DTG[4:0])xt
dtg
with T
dtg
=16xt
DTS
.
Example if T
DTS
=125ns (8MHz), dead-time possible values are:
0 to 15875 ns by 125 ns steps,
16 us to 31750 ns by 250 ns steps,
32 us to 63us by 1 us steps,
64 us to 126 us by 2 us steps
Note: This bit-field can not be modified as long as LOCK level 1, 2 or 3 has been programmed
(LOCK bits in TIMx_BDTR register).
1514131211109876543210
Reserved
DBL[4:0]
Reserved
DBA[4:0]
rw rw rw rw rw rw rw rw rw rw
Bits 15:13 Reserved, always read as 0
Bits 12:8 DBL[4:0]: DMA burst length
This 5-bit vector defines the length of DMA transfers (the timer recognizes a burst transfer
when a read or a write access is done to the TIMx_DMAR address), i.e. the number of
transfers. Transfers can be in half-words or in bytes (see example below).
00000: 1 transfer
00001: 2 transfers
00010: 3 transfers
...
10001: 18 transfers
Bits 7:5 Reserved, always read as 0

ST STM32F101xx Specifications

General

Brand	ST
Model	STM32F101xx
Category	Microcontrollers
Language	English