at75c220 ATMEL Corporation, at75c220 Datasheet - Page 95

• Manufacturer Part Number: at75c220
• Description: Smart Internet Appliance Processor Siap
• Manufacturer: ATMEL Corporation

USART Receive Counter Register
Name:
Access Type:Read/write
Reset Value: 0x0
•
USART Transmit Pointer Register
Name:
Access Type:Read/write
Reset Value: 0x0
•
RXCTR: Receive Counter
TXPTR: Transmit Pointer
RXCTR must be loaded with the size of the receive buffer.
0: Stop peripheral data transfer dedicated to the receiver.
1 - 65535: Start peripheral data transfer if RXRDY is active.
TXPTR must be loaded with the address of the transmit buffer.
31
23
15
31
23
15
–
–
7
7
US_RCR
US_TPR
30
22
14
30
22
14
–
–
6
6
29
21
13
29
21
13
–
–
5
5
28
20
12
28
20
12
–
–
4
4
RXCTR
RXCTR
TXPTR
TXPTR
TXPTR
TXPTR
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
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