cx28500 Mindspeed Technologies, cx28500 Datasheet - Page 123

• Manufacturer Part Number: cx28500
• Description: Cx28500 Multichannel Synchronous Communications Controller
• Manufacturer: Mindspeed Technologies

6.8
Figures 6-2
CX28500 and the Host.
Figure 6-2.
28500-DSH-002-C
FOOTNOTE:
(1)
(2)
BAHP must be dword aligned [1:0] = 00.
MDHP must be 64-bit aligned [2:0] = 000.
and
Transmit Base Address
Transmit Internal Message
Transmit Data Structures
Transmit
Pointer
6-3
Head Pointer
Processing Table
(THP)
Head
THP
Base Address
Head Pointer
(TBAHP)
Receive and Transmit Data Structures
Internal
(BAHP)
(TIMPT)
illustrate the receive and transmit data structures used for data communication between
Descriptor
Message
(1)
Current
(MD)
12 bit
MD
0
1023
Mindspeed Proprietary and Confidential
Mindspeed Technologies
Transmit Head Pointer
Message Descriptor
MDHP (Ch #I)
Head Pointer
(THPT)
(MDHP)
MDHP
Table
(2)
(2)
0
1023
Shared Memory
®
Transmit Message
Transmit Message
Descriptor
Descriptor Table
Descriptor Table
(TMDT Ch #0)
(TMDT Ch #I)
Status
Buffer
(BSD)
BSD
BSD
BSD
BSD
BSD
0
4095
0
4095
Memory Organization
Buffer
Buffer
Buffer
Buffer
Data
Data
Data
Data
500052_057
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