53

Receive Interrupt Status (Unmasked) Register (RXINTSTATRAW)

96

54

Receive Interrupt Status (Masked) Register (RXINTSTATMASKED)

97

55

Receive Interrupt Mask Set Register (RXINTMASKSET)

98

56

Receive Interrupt Mask Clear Register (RXINTMASKCLEAR)

99

57

MAC Interrupt Status (Unmasked) Register (MACINTSTATRAW)

100

58

MAC Interrupt Status (Masked) Register (MACINTSTATMASKED)

100

59

MAC Interrupt Mask Set Register (MACINTMASKSET)

101

60

MAC Interrupt Mask Clear Register (MACINTMASKCLEAR)

101

61

Receive Multicast/Broadcast/Promiscuous Channel Enable Register (RXMBPENABLE)

102

62

Receive Unicast Enable Set Register (RXUNICASTSET)

105

63

Receive Unicast Clear Register (RXUNICASTCLEAR)

106

64

Receive Maximum Length Register (RXMAXLEN)

107

65

Receive Buffer Offset Register (RXBUFFEROFFSET)

107

66

Receive Filter Low Priority Frame Threshold Register (RXFILTERLOWTHRESH)

108

67

Receive Channel n Flow Control Threshold Register (RXnFLOWTHRESH)

108

68

Receive Channel n Free Buffer Count Register (RXnFREEBUFFER)

109

69

MAC Control Register (MACCONTROL)

110

70

MAC Status Register (MACSTATUS)

112

71

Emulation Control Register (EMCONTROL)

114

72

FIFO Control Register (FIFOCONTROL)

114

73

MAC Configuration Register (MACCONFIG)

115

74

Soft Reset Register (SOFTRESET)

115

75

MAC Source Address Low Bytes Register (MACSRCADDRLO)

116

76

MAC Source Address High Bytes Register (MACSRCADDRHI)

116

77

MAC Hash Address Register 1 (MACHASH1)

117

78

MAC Hash Address Register 2 (MACHASH2)

117

79

Back Off Random Number Generator Test Register (BOFFTEST)

118

80

Transmit Pacing Algorithm Test Register (TPACETEST)

118

81

Receive Pause Timer Register (RXPAUSE)

119

82

Transmit Pause Timer Register (TXPAUSE)

119

83

MAC Address Low Bytes Register (MACADDRLO)

120

84

MAC Address High Bytes Register (MACADDRHI)

121

85

MAC Index Register (MACINDEX)

121

86

Transmit Channel n DMA Head Descriptor Pointer Register (TXnHDP)

122

87

Receive Channel n DMA Head Descriptor Pointer Register (RXnHDP)

122

88

Transmit Channel n Completion Pointer Register (TXnCP)

123

89

Receive Channel n Completion Pointer Register (RXnCP)

123

90

Statistics Register

124

SPRUEQ6–December 2007

List of Figures

7

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Texas Instruments TMS320DM646x manual MAC Interrupt Mask Clear Register Macintmaskclear

TMS320DM646x specifications

The Texas Instruments TMS320DM646x series is a powerful family of digital media processors designed to handle high-performance applications in video, imaging, and audio processing. These devices leverage advanced technologies to deliver efficient processing capabilities for a variety of embedded systems, making them ideal for multimedia solutions.

At the core of the TMS320DM646x is the versatile DSP architecture, which optimizes performance for digital signal processing tasks. This architecture allows for real-time processing, enabling the devices to handle complex algorithms necessary for image and video compression, thereby meeting the rigorous demands of modern multimedia applications.

One of the standout features of the TMS320DM646x series is its dual-core architecture. This consists of a Digital Signal Processor (DSP) alongside an ARM-based application processor. The DSP is predominantly employed for critical processing tasks, allowing it to execute high-throughput data streams efficiently, while the ARM processor manages control tasks and user interfaces. This division of labor enhances overall system performance and responsiveness.

The series supports a wide range of video formats and technologies, including HD video encoding and decoding, which accommodates HD resolution content essential for today’s multimedia applications. Furthermore, the TMS320DM646x integrates hardware accelerators for video compression standards such as H.264 and MPEG-4, which significantly reduce the processing burden on the CPU, resulting in lower power consumption and higher efficiency.

Networking capabilities are another significant feature of the TMS320DM646x. With support for Ethernet, the device can handle streaming media applications and connectivity, facilitating the transmission of high-quality audio and video over the internet. This connectivity is crucial for developing robust IPTV and streaming solutions.

Power management is a primary focus in the design of the TMS320DM646x series. The processors are built to operate efficiently with minimal power consumption, making them suitable for portable and battery-operated devices. The low power characteristics do not compromise performance, enabling high computational capabilities while maintaining energy efficiency.

Overall, the Texas Instruments TMS320DM646x series offers an exceptional combination of processing power, advanced multimedia capabilities, and energy efficiency. It optimally supports a wide array of applications, from video processing and image analysis to audio encoding. This comprehensive feature set, along with its robust architecture, positions the TMS320DM646x as a leading choice for developers in the digital media space.