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M451
May. 4, 2018
Page
354
of
1006
Rev.2.08
M4
51
S
E
RI
E
S
T
E
CH
NICA
L RE
F
E
R
E
NC
E
M
A
NU
A
L
External Bus Interface Timing Control Register (EBI_TCTLx)
Register
Offset
R/W
Description
Reset Value
EBI_TCTL0
0x04
R/W
External Bus Interface Bank0 Timing Control Register
0x0000_0000
EBI_TCTL1
0x14
R/W
External Bus Interface Bank1 Timing Control Register
0x0000_0000
31
30
29
28
27
26
25
24
Reserved
R2R
23
22
21
20
19
18
17
16
WAHDOFF
RAHDOFF
Reserved
15
14
13
12
11
10
9
8
W2X
Reversed
TAHD
7
6
5
4
3
2
1
0
TACC
Reserved
Bits
Description
[31:30]
Reserved
Reserved.
[27:24]
R2R
Idle Cycle Between Read-to-read
This field defines the number of R2R idle cycle.
R2R idle cycle = (R2R * EBI_MCLK).
When read action is finish and next action is going to read, R2R idle cycle is inserted and
EBI_nCS return to idle state.
[23]
WAHDOFF
Access Hold Time Disable Control When Write
0 = The Data Access Hold Time (tAHD) during EBI writing is Enabled.
1 = The Data Access Hold Time (tAHD) during EBI writing is Disabled.
[22]
RAHDOFF
Access Hold Time Disable Control When Read
0 = The Data Access Hold Time (tAHD) during EBI reading is Enabled.
1 = The Data Access Hold Time (tAHD) during EBI reading is Disabled.
[21:16]
Reserved
Reserved.
[15:12]
W2X
Idle Cycle After Write
This field defines the number of W2X idle cycle.
W2X idle cycle = (W2X * EBI_MCLK).
When write action is finish, W2X idle cycle is inserted and EBI_nCS return to idle state.
[11]
Reserved
Reserved.
[10:8]
TAHD
EBI Data Access Hold Time
TAHD define data access hold time (tAHD).
tAHD = (TAHD +1) * EBI_MCLK.
[7:3]
TACC
EBI Data Access Time
TACC define data access time (tACC).
tACC = (TACC +1) * EBI_MCLK.
Содержание ARM Cortex NuMicro M451 Series
Страница 301: ...M451 May 4 2018 Page 301 of 1006 Rev 2 08 M451 SERIES TECHNICAL REFERENCE MANUAL...
Страница 324: ...M451 May 4 2018 Page 324 of 1006 Rev 2 08 M451 SERIES TECHNICAL REFERENCE MANUAL Figure 6 4 18 Checksum Calculation Flow...
Страница 355: ...M451 May 4 2018 Page 355 of 1006 Rev 2 08 M451 SERIES TECHNICAL REFERENCE MANUAL 2 0 Reserved Reserved...
Страница 625: ...M451 May 4 2018 Page 625 of 1006 Rev 2 08 M451 SERIES TECHNICAL REFERENCE MANUAL 00 5 bits 01 6 bits 10 7 bits 11 8 bits...
Страница 721: ...M451 May 4 2018 Page 721 of 1006 Rev 2 08 M451 SERIES TECHNICAL REFERENCE MANUAL the SCL line 1 0 Reserved Reserved...
Страница 1001: ...M451 May 4 2018 Page 1001 of 1006 Rev 2 08 M451 SERIES TECHNICAL REFERENCE MANUAL LQFP 64L 10x10x1 4 mm footprint 2 0 mm 9 2...
Страница 1002: ...M451 May 4 2018 Page 1002 of 1006 Rev 2 08 M451 SERIES TECHNICAL REFERENCE MANUAL LQFP 64L 7x7x1 4 mm footprint 2 0 mm 9 3...
Страница 1003: ...M451 May 4 2018 Page 1003 of 1006 Rev 2 08 M451 SERIES TECHNICAL REFERENCE MANUAL LQFP 48L 7x7x1 4mm footprint 2 0mm 9 4...