cx82100 Conexant Systems, Inc., cx82100 Datasheet - Page 64

• Manufacturer Part Number: cx82100
• Description: Home Network Processor Hnp
• Manufacturer: Conexant Systems, Inc.

4.5
4.5.1
4.5.2
4.5.3
4.5.4
4-4
31:24
23:2
1:0
31:24
23:2
1:0
31:26
25:24
23:11
10:0
31:11
Bit(s)
Bit(s)
Bit(s)
Bit(s)
10:0
RW*
RW*
RW
RW*
Type
Type
Type
Type
RW*
Control Register Formats
DMAC x Current Pointer 1 (DMAC_{x}_Ptr1)
DMAC x Indirect/Return Pointer 1 (DMAC_{x}_Ptr2)
DMAC x Buffer Size Counter 1 (DMAC_{x}_Cnt1)
DMAC x Buffer Size Counter 2 (DMAC_{x}_Cnt2)
22’bx
22’bx
2’b00
11’bx
Default
Default
Default
Default
11’bx
Conexant Proprietary and Confidential Information
DMAC_{x}_Ptr1
DMAC_{x}_Ptr2
DMAC_{x}_LMode
DMAC_{x}_Cnt1
DMAC_{x}_Cnt2
CX82100 Home Network Processor Data Sheet
Name
Name
Name
Name
Reserved.
Current DMA qword Address Pointer.
Points to next qword transfer location within source or destination
buffer. Always dword-aligned.
Reserved.
Reserved.
Indirect or Return DMA qword Address Pointer.
Points to next pointer which points to next qword transfer location
within source or destination buffer. Always dword-aligned.
Reserved.
Reserved.
DMA Linked List Mode.
Reserved.
Initialize to DMA Buffer Size in No. of qwords.
Decrements during DMA data transfers and reloads at end of buffer.
Note that a write to DMAC_{x}_Cnt1 also loads buffer size to
DMAC_{x}_Cnt2.
Reserved.
Saved DMA Buffer Size in No. of qwords.
00 =
01 =
10 =
11 =
ptr/cnt at buffer tail.
ptr/cnt at Ptr2 (table).
ptr/cnt at Ptr2 (return ptr).
Reserved.
Description
Description
Description
Description
101306C