at91cap7e ATMEL Corporation, at91cap7e Datasheet - Page 189
![no-image](/images/manufacturer_photos/0/0/79/atmel_corporation_sml.jpg)
at91cap7e
Manufacturer Part Number
at91cap7e
Description
Customizable Microcontroller
Manufacturer
ATMEL Corporation
Datasheet
1.AT91CAP7E.pdf
(520 pages)
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• TRC: Row Cycle Delay
Reset value is seven cycles.
This field defines the delay between a Refresh and an Activate Command in number of cycles. Number of cycles is
between 0 and 15.
• TRP: Row Precharge Delay
Reset value is three cycles.
This field defines the delay between a Precharge Command and another Command in number of cycles. Number of cycles
is between 0 and 15.
• TRCD: Row to Column Delay
Reset value is two cycles.
This field defines the delay between an Activate Command and a Read/Write Command in number of cycles. Number of
cycles is between 0 and 15.
• TRAS: Active to Precharge Delay
Reset value is five cycles.
This field defines the delay between an Activate Command and a Precharge Command in number of cycles. Number of
cycles is between 0 and 15.
• TXSR: Exit Self Refresh to Active Delay
Reset value is eight cycles.
This field defines the delay between SCKE set high and an Activate Command in number of cycles. Number of cycles is
between 0 and 15.
22.7.4
Register Name:
Access Type:
• DA: Decode Cycle Enable
A decode cycle can be added on the addresses as soon as a non-sequential access is performed on the AHB bus.
The addition of the decode cycle allows the SDRAMC to gain time to access the SDRAM memory.
0: Decode cycle is disabled.
1: Decode cycle is enabled.
8549A–CAP–10/08
31
23
15
–
–
–
7
–
SDRAMC High Speed Register
30
22
14
–
–
–
6
–
29
21
13
–
–
–
5
–
SDRAMC_HSR
Read/Write
28
20
12
–
–
–
4
–
27
19
11
–
–
–
3
–
26
18
10
–
–
–
2
–
25
17
–
–
9
–
1
–
AT91CAP7E
DA
24
16
–
–
8
–
0
189
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