AT91SAM9M10-G45-EK Atmel, AT91SAM9M10-G45-EK Datasheet - Page 138
![KIT EVAL FOR AT91SAMG45/9M10](/photos/9/21/92142/at91sam9m10-g45-ek_sml.jpg)
AT91SAM9M10-G45-EK
Manufacturer Part Number
AT91SAM9M10-G45-EK
Description
KIT EVAL FOR AT91SAMG45/9M10
Manufacturer
Atmel
Series
AT91SAM Smart ARMr
Type
MCUr
Specifications of AT91SAM9M10-G45-EK
Contents
Board, Cables, Power Supply
Processor To Be Evaluated
AT91SAM9M10
Processor Series
AT91SAM9
Data Bus Width
32 bit
Interface Type
RS-232, Ethernet, USB, JTAG
Operating Supply Voltage
5 V
Silicon Manufacturer
Atmel
Core Architecture
AVR
Kit Contents
Board
Features
Two High Speed USB Hosts, LCD TFT Display
Svhc
No SVHC (15-Dec-2010)
Mcu Supported Families
AT91SAM9M10,
Rohs Compliant
Yes
For Use With/related Products
AT91SAM9M10
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
AT91SAM9M10-G45-EK
Manufacturer:
INFINEON
Quantity:
10 000
Company:
Part Number:
AT91SAM9M10-G45-EK
Manufacturer:
Atmel
Quantity:
135
- Current page: 138 of 1404
- Download datasheet (22Mb)
19.5.2.1
19.5.2.2
6355B–ATARM–21-Jun-10
Round-Robin Arbitration
Fixed Priority Arbitration
For each slave, each master x is assigned to one of the slave priority pools through the Priority
Registers for Slaves (MxPR fields of MATRIX_PRAS and MATRIX_PRBS). When evaluating
masters requests, this programmed priority level always takes precedence.
After reset, all the masters are belonging to the lowest priority pool (MxPR = 0) and so are
granted bus access in a true Round-Robin fashion.
The highest priority pool must be specifically reserved for masters requiring very low access
latency. If more than one master belong to this pool, these will be granted bus access in a
biased Round-Robin fashion which allow tight and deterministic maximum access latency from
AHB bus request. In fact, at worst, any currently high priority master request will be granted after
the current bus master access is ended and the other high priority pool masters, if any, have
been granted once each.
The lowest priority pool shares the remaining bus bandwidth between AHB Masters.
Intermediate priority pools allow fine priority tuning. Typically, a moderately latency critical mas-
ter or a bandwidth only critical master will use such a priority level. The higher the priority level
(MxPR value), the higher the master priority.
All combination of MxPR values are allowed for all masters and slaves. For example some mas-
ters might be assigned to the highest priority pool (round-robin) and the remaining masters to
the lowest priority pool (round-robin), with no master for intermediate fix priority levels.
If more than one master is requesting the slave bus, whatever are the respective masters priori-
ties, no master will be granted the slave bus for two consecutive runs. A master can only get
back to back grants as long as it is the only requesting master.
This arbitration algorithm is the first and only applied between masters from distinct priority
pools. It is also used inside priority pools other than the highest and lowest ones (intermediate
priority pools).
It allows the Bus Matrix arbiters to dispatch the requests from different masters to the same
slave by using the fixed priority defined by the user in the MxPR field for each master inside the
MATRIX_PRAS and MATRIX_PRBS Priority Registers. If two or more master requests are
active at the same time, the master with the highest priority number MxPR is serviced first.
Inside intermediate priority pools, if two or more master requests with the same priority are
active at the same time, the master with the highest number is serviced first.
This algorithm is only used inside the highest and lowest priority pools. It allows the Bus Matrix
arbiters to dispatch the requests from different masters to the same slave in a fair way. If two or
more master requests are active at the same time inside the priority pool, they are serviced in a
round-robin increasing master number order.
AT91SAM9M10
138
Related parts for AT91SAM9M10-G45-EK
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
![AT91SAM9M10-EKES](/photos/9/26/92643/at91sam9m10-ekes_tmb.jpg)
Part Number:
Description:
KIT EVAL FOR AT91SAM9M10
Manufacturer:
Atmel
Datasheet:
![AT91SAM9M10-CU](/photos/12/13/121367/324-tfbga-pkg_tmb.jpg)
Part Number:
Description:
IC MCU 16/32BIT ARM9 324TFBGA
Manufacturer:
Atmel
Datasheet:
![AT91SAM9M10](/images/manufacturer_photos/0/0/79/atmel_corporation_tmb.jpg)
Part Number:
Description:
At91 Arm Thumb-based Microcontrollers
Manufacturer:
ATMEL Corporation
Datasheet:
![KSK-AT91SAM9XE-PL](/photos/15/94/159430/ksk-at91sam9xe-pl_tmb.jpg)
Part Number:
Description:
MCU, MPU & DSP Development Tools KICKSTART KIT FOR AT91SAM9 PLUS
Manufacturer:
IAR Systems
![ATSTK600](/photos/9/20/92038/atstk600_tmb.jpg)
Part Number:
Description:
DEV KIT FOR AVR/AVR32
Manufacturer:
Atmel
Datasheet:
![U641B](/images/manufacturer_photos/0/0/79/atmel_corporation_tmb.jpg)
Part Number:
Description:
INTERVAL AND WIPE/WASH WIPER CONTROL IC WITH DELAY
Manufacturer:
ATMEL Corporation
Datasheet:
![U4082B](/images/manufacturer_photos/0/0/79/atmel_corporation_tmb.jpg)
Part Number:
Description:
Low-Voltage Voice-Switched IC for Hands-Free Operation
Manufacturer:
ATMEL Corporation
Datasheet:
![U4089B](/images/manufacturer_photos/0/0/79/atmel_corporation_tmb.jpg)
Part Number:
Description:
MONOLITHIC INTEGRATED FEATUREPHONE CIRCUIT
Manufacturer:
ATMEL Corporation
Datasheet:
![U4255BM-M](/images/manufacturer_photos/0/0/79/atmel_corporation_tmb.jpg)
Part Number:
Description:
AM-FM Receiver IC U4255BM-M
Manufacturer:
ATMEL Corporation
Datasheet:
![U4089B-P](/images/manufacturer_photos/0/0/79/atmel_corporation_tmb.jpg)
Part Number:
Description:
Monolithic Integrated Feature Phone Circuit
Manufacturer:
ATMEL Corporation
Datasheet:
![TDA4470](/images/manufacturer_photos/0/0/79/atmel_corporation_tmb.jpg)
Part Number:
Description:
Multistandard Video-IF and Quasi Parallel Sound Processing
Manufacturer:
ATMEL Corporation
Datasheet:
![ATF22V10B-25PC](/images/manufacturer_photos/0/0/79/atmel_corporation_tmb.jpg)
Part Number:
Description:
High-performance EE PLD
Manufacturer:
ATMEL Corporation
Datasheet: