AT91SAM9261SB-CU-999 Atmel, AT91SAM9261SB-CU-999 Datasheet - Page 133

• Manufacturer Part Number: AT91SAM9261SB-CU-999
• Description: IC MCU ARM9 ULTRA LP 217LFBGA
• Manufacturer: Atmel
• Series: AT91SAMr

Specifications of AT91SAM9261SB-CU-999

• Core Processor: ARM9
• Core Size: 16/32-Bit
• Speed: 190MHz
• Connectivity: EBI/EMI, I²C, MMC, SPI, SSC, UART/USART, USB
• Peripherals: DMA, LCD, POR, PWM, WDT
• Number Of I /o: 96
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: ROM
• Ram Size: 48K x 8
• Voltage - Supply (vcc/vdd): 1.08 V ~ 1.32 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 217-LFBGA
• Processor Series: AT91SAMx
• Core: ARM926EJ-S
• Data Bus Width: 32 bit
• Data Ram Size: 16 KB
• Interface Type: 2-Wire, I2S, SPI, USB
• Maximum Clock Frequency: 190 MHz
• Number Of Programmable I/os: 96
• Number Of Timers: 4
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: JTRACE-ARM-2M, MDK-ARM, RL-ARM, ULINK2
• Development Tools By Supplier: AT91SAM-ICE, AT91-ISP, AT91SAM9261-EK
• Minimum Operating Temperature: - 40 C
• For Use With: AT91SAM9261-EK - KIT EVAL FOR AT91SAM926EJ-SAT91SAM-ICE - EMULATOR FOR AT91 ARM7/ARM9
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -
• Lead Free Status / Rohs Status: Details

20.5.2
Name:
Address:
Access Type:Read-write
• SLOT_CYCLE: Maximum Number of Allowed Cycles for a Burst
When the SLOT_CYCLE limit is reached for a burst, it may be broken by another master trying to access this slave.
This limit has been set to avoid locking very slow slaves when very long bursts are used.
This limit should not be very small. An unreasonably small value breaks every burst and the Bus Matrix spends its time
arbitrating without performing any data transfer. 16 cycles is a reasonable value for SLOT_CYCLE.
• DEFMASTR_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 one cycle latency for the first transfer of a burst.
1: Last Default Master
At the end of the current slave access, if no other master request is pending, the slave remains connected to the last mas-
ter that accessed it.
This results in not having the one cycle latency when the last master is trying 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 with the fixed master that
has its index in FIXED_DEFMSTR register.
This results in not having the one cycle latency when the fixed master is trying to access the slave again.
• FIXED_DEFMSTR: Fixed Index of Default Master
This is the index of the Fixed Default Master for this slave.
6242E–ATARM–11-Sep09
31
23
15
–
–
–
7
Bus Matrix Slave Configuration Registers
MATRIX_SCFG0...MATRIX_SCFG4
0xFFFFEE04
30
22
14
–
–
6
29
21
13
–
–
5
28
20
12
–
–
4
SLOT_CYCLE
FIXED_DEFMSTR
27
19
11
–
–
3
26
18
10
–
–
2
AT91SAM9261S
25
17
–
9
–
1
DEFMSTR_TYPE
24
16
–
8
–
0
133