tmp19a44fda TOSHIBA Semiconductor CORPORATION, tmp19a44fda Datasheet - Page 335

• Manufacturer Part Number: tmp19a44fda
• Description: 32bit Tx System Risc
• Manufacturer: TOSHIBA Semiconductor CORPORATION

32-bit Input Capture (TMRC)
TBTCR
(0xFF00_4A08)
<TBTCLK3:0>: This is an input clock for TBT. Clocks from "0000" to "0111" are available as prescaler
<TBTNF>:
bit
Symbol
Read/Writ
e
After
reset
bit
Symbol
Read/Writ
e
After
reset
bit
Symbol
Read/Writ
e
After
reset
bit
Symbol
Read/Writ
e
After
reset
Function
Controls the noise removal for the TBTIN pin input.
If this is set to "0" (removal disabled), any input of more than 2/fsys
(25ns@fperiph=fc=80MHz) is accepted as a source clock for TBT, at whichever level
the TBTIN pin is, "H" or "L."
If this is set to "1" (removal enabled), any input of less than 6/fsys
(75ns@fperiph=fc=80MHz) is regarded as noise and removed, at whichever level the
TBTIN pin is, "H" or "L." The range of removal changes depending on the selected
clock gear and a system clock used.
output clocks. A clock "1111" is input through the TBTIN pin.
TBTIN input
noise
removal
0:2/fsys or
more
1:6/fsys or
more
TBTNF
15
23
31
7
0
Ensure to write “0”.
14
22
30
TMP19A44 (rev1.3) 12-10
6
0
TMRC Control Register
13
21
29
5
0
12
20
28
4
0
R/W
R
R
R
0
0
0
TBT source clock
0000: φT2
0011: φT16
0110: φT128 0111: φT256
1111: TBTIN pin input
TBTCLK
11
19
27
3
3
0
TBTCLK
0001: φT4
0100: φT32 0101: φT64
10
18
26
2
2
0
TMP19A44
TBTCLK
0010: φT8
17
25
1
1
0
9
TBTCLK0
2010-04-01
16
24
0
0
8