AT91RM9200-QI-002 Atmel, AT91RM9200-QI-002 Datasheet - Page 620

• Manufacturer Part Number: AT91RM9200-QI-002
• Description: IC ARM9 MCU 208 PQFP
• Manufacturer: Atmel
• Series: AT91SAMr

Specifications of AT91RM9200-QI-002

• Core Processor: ARM9
• Core Size: 16/32-Bit
• Speed: 180MHz
• Connectivity: EBI/EMI, Ethernet, I²C, MMC, SPI, SSC, UART/USART, USB
• Peripherals: POR
• Number Of I /o: 122
• Program Memory Size: 128KB (128K x 8)
• Program Memory Type: ROM
• Ram Size: 48K x 8
• Voltage - Supply (vcc/vdd): 1.65 V ~ 1.95 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 208-MQFP, 208-PQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Data Converters: -

36.6.7
Name:
Access Type:
• ADDRESS: Receive Buffer Queue Pointer
Written with the address of the start of the receive queue, reads as a pointer to the current buffer being used. The receive
buffer is forced to word alignment.
36.6.8
Name:
Access Type:
• BNA: Buffer Not Available
An attempt was made to get a new buffer and the pointer indicated that it was owned by the processor. The DMA rereads
the pointer each time a new frame starts until a valid pointer is found. This bit is set at each attempt that fails even if it has
not had a successful pointer read since it has been cleared. Cleared by writing a one to this bit.
• REC: Frame Received
One or more frames have been received and placed in memory. Cleared by writing a one to this bit.
• OVR: RX Overrun
The DMA block was unable to store the receive frame to memory, either because the ASB bus was not granted in time or
because a not OK HRESP was returned. The buffer is recovered if this happens. Cleared by writing a one to this bit.
620
31
23
15
31
23
15
7
–
–
–
7
–
AT91RM9200
EMAC Receive Buffer Queue Pointer Register
EMAC Receive Status Register
30
22
14
30
22
14
ETH_RBQP
Read/Write
6
ETH_RSR
Read/Write
–
–
–
6
–
29
21
13
29
21
13
5
–
–
–
5
–
28
20
12
28
20
12
4
–
–
–
4
–
ADDRESS
ADDRESS
ADDRESS
ADDRESS
27
19
11
27
19
11
–
–
–
–
3
3
OVR
26
18
10
26
18
10
2
–
–
–
2
REC
25
17
25
17
–
–
–
9
1
9
1
1768I–ATARM–09-Jul-09
BNA
24
16
24
16
8
0
–
–
8
–
0