SAM9G10 Atmel Corporation, SAM9G10 Datasheet - Page 326
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SAM9G10
Manufacturer Part Number
SAM9G10
Description
Manufacturer
Atmel Corporation
Datasheets
1.SAM9261.pdf
(1274 pages)
2.SAM9261.pdf
(43 pages)
3.SAM9G10.pdf
(750 pages)
4.SAM9G10.pdf
(39 pages)
Specifications of SAM9G10
Flash (kbytes)
0 Kbytes
Pin Count
217
Max. Operating Frequency
266 MHz
Cpu
ARM926
Hardware Qtouch Acquisition
No
Max I/o Pins
96
Ext Interrupts
96
Usb Transceiver
3
Usb Speed
Full Speed
Usb Interface
Host, Device
Spi
2
Twi (i2c)
1
Uart
4
Ssc
3
Sd / Emmc
1
Graphic Lcd
Yes
Video Decoder
No
Camera Interface
No
Resistive Touch Screen
No
Temp. Sensor
No
Crypto Engine
No
Sram (kbytes)
16
Self Program Memory
NO
External Bus Interface
1
Dram Memory
sdram
Nand Interface
Yes
Picopower
No
Temp. Range (deg C)
-40 to 85
I/o Supply Class
1.8/3.3
Operating Voltage (vcc)
1.08 to 1.32
Fpu
No
Mpu / Mmu
No/Yes
Timers
3
Output Compare Channels
3
Input Capture Channels
3
32khz Rtc
Yes
Calibrated Rc Oscillator
No
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26.7.2
Name:
Address:
Access:
• SLOT_CYCLE: Maximum Bus Grant Duration for Masters
When SLOT_CYCLE AHB clock cycles have elapsed since the last arbitration, a new arbitration takes place so as to let
another master access this slave. If another master is requesting the slave bus, then the current master burst is broken.
If SLOT_CYCLE = 0, the Slot Cycle Limit feature is disabled and bursts always complete unless broken according to the
ULBT.
This limit has been placed in order to enforce arbitration so as to meet potential latency constraints of masters waiting for
slave access or in the particular case of a master performing back-to-back undefined length bursts indefinitely freezing the
arbitration.
This limit must not be too small. Unreasonably small values break every burst and the Bus Matrix arbitrates without per-
forming any data transfer. The default maximum value is usually an optimal conservative choice.
In most cases this feature is not needed and should be disabled for power saving. See
• DEFMSTR_TYPE: Default Master Type
0: No Default Master
At the end of the current slave access, if no other master request is pending, the slave is disconnected from all masters.
This results in a one-clock cycle latency for the first access of a burst transfer or for a single access.
1: Last Default Master
At the end of the current slave access, if no other master request is pending, the slave stays connected to the last master
having accessed it.
This results in not having a one-clock cycle latency when the last master tries to access the slave again.
2: Fixed Default Master
At the end of the current slave access, if no other master request is pending, the slave connects to the fixed master the
number that has been written in the FIXED_DEFMSTR field.
This results in not having a one-clock cycle latency when the fixed master tries to access the slave again.
• FIXED_DEFMSTR: Fixed Default Master
This is the number of the Default Master for this slave. Only used if DEFMSTR_TYPE is 2. Specifying the number of a mas-
ter which is not connected to the selected slave is equivalent to setting DEFMSTR_TYPE to 0.
326
31
23
15
–
–
–
7
SAM9G35
Bus Matrix Slave Configuration Registers
MATRIX_SCFG0...MATRIX_SCFG9
0xFFFFDE40 [0], 0xFFFFDE44 [1], 0xFFFFDE48 [2], 0xFFFFDE4C [3], 0xFFFFDE50 [4], 0xFFFFDE54 [5],
0xFFFFDE58 [6], 0xFFFFDE5C [7], 0xFFFFDE60 [8], 0xFFFFDE64 [9]
Read-write
30
22
14
–
–
–
6
29
21
13
–
–
5
28
20
12
–
–
4
FIXED_DEFMSTR
SLOT_CYCLE
27
19
11
–
–
3
26
18
10
–
–
2
Section 26.5.1.2 on page
25
17
–
9
–
1
DEFMSTR_TYPE
11053B–ATARM–22-Sep-11
SLOT_CYCLE
320.
24
16
–
8
0
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