AT91SAM7X128 Atmel, AT91SAM7X128 Datasheet - Page 147

• Manufacturer Part Number: AT91SAM7X128
• Description: MCU 32-Bit 91S ARM7TDMI RISC 128KB Flash 1.8V/3.3V 100-Pin LQFP
• Manufacturer: Atmel

Specifications of AT91SAM7X128

• Package: 100LQFP
• Device Core: ARM7TDMI
• Family Name: 91S
• Maximum Speed: 55 MHz
• Ram Size: 32 KB
• Program Memory Size: 128 KB
• Operating Supply Voltage: 1.8|3.3 V
• Data Bus Width: 32 Bit
• Program Memory Type: Flash
• Number Of Programmable I/os: 62
• Interface Type: CAN/Ethernet/SPI/I2S/TWI/USART/USB
• On-chip Adc: 8-chx10-bit
• Operating Temperature: -40 to 85 °C
• Number Of Timers: 3

22.4.5
Register Name:
Access Type:
• RXNPTR: Receive Next Pointer Address
RXNPTR is the address of the next buffer to fill with received data when the current buffer is full.
22.4.6
Register Name:
Access Type:
• RXNCR: Receive Next Counter Value
RXNCR is the size of the next buffer to receive.
6120H–ATARM–17-Feb-09
31
23
15
31
23
15
7
7
PDC Receive Next Pointer Register
PDC Receive Next Counter Register
PERIPH_RNPR
Read-write
30
22
14
PERIPH_RNCR
Read-write
30
22
14
6
6
29
21
13
29
21
13
5
5
AT91SAM7X512/256/128 Preliminary
28
20
12
28
20
12
4
4
RXNPTR
RXNPTR
RXNPTR
RXNPTR
RXNCR
RXNCR
--
--
27
19
11
27
19
11
3
3
26
18
10
26
18
10
2
2
25
17
25
17
9
1
9
1
24
16
24
16
8
0
8
0
147