s3c4510b Samsung Semiconductor, Inc., s3c4510b Datasheet - Page 334

• Manufacturer Part Number: s3c4510b
• Description: 16/32-bit Risc Microcontroller
• Manufacturer: Samsung Semiconductor, Inc.

HDLC CONTROLLERS
DMA TX BUFFER DESCRIPTOR POINTER REGISTER
The DMA transmit buffer descriptor pointer register contains the address of the Tx buffer data pointer on the data
to be sent. During a DMA operation, the buffer descriptor pointer is updated by the next buffer data pointer.
8-48
HDMATXPTRA
HDMATXPTRB
Registers
31
31
30
30
29
29
First byte
28
28
27
27
26
26
Figure 8-24. HDLC Station Address and HMASK Register
25
25
Table 8-18. DMA Tx Buffer Descriptor Pointer Registers
0x7038
0x8038
Offset
Station address byte register and MASK register
[31:24] First address byte
[23:16] Second address byte
[15:8] Third address byte
[7:0] Fourth address byte
24
24
Figure 8-25. DMA Tx Buffer Descriptor Pointer
23
23
[25:0] DMA Tx Buffer Descriptor Pointer
22
22
Second byte
21 20
21 20
R/W
R/W
R/W
19
19
18 17
18 17
DMA Tx Buffer Descriptor Pointer
16
16
DMA Tx Buffer Descriptor Pointer
DMA Tx Buffer Descriptor Pointer
15
15
14
14
13
13
Third byte
12
12
Description
11
11
10
10
9
9
8
8
7
7
6
6
Fourth byte
5
5
4
4
3
3
0xFFFFFFFF
0xFFFFFFFF
2
2
Reset Value
1
1
0
0
S3C4510B