EVAL-AD1940EB/AD1941EB
Rev. 0 | Page 3 of 32
AD1940/AD1941 DEVICE DESCRIPTION
(continued from Page 1)
The signal processing used in the AD1940/AD1941 is
comparable to that found in high end studio equipment. Most
of the processing is done in full, 56-bit double-precision mode,
resulting in very good, low level signal performance and the
absence of limit cycles or idle tones. The dynamics processor
uses a sophisticated, multiple-breakpoint algorithm often found
in high end broadcast compressors.
The AD1940/AD1941 are fully-programmable DSPs. Easy-to-use
software allows the user to graphically configure a custom signal
processing flow, using blocks such as biquad filters, dynamics
processors, and surround sound processors. An extensive control
port allows click-free parameter updates, along with readback
capability from any point in the algorithm flow.
The digital input and output ports of the AD1940/AD1941 allow
a glueless connection to ADCs and DACs by multiple, 2-channel
serial data streams or TDM data streams. When in TDM mode,
the AD1940/AD1941 can input 8 channels or 16 channels of
serial data, and can output either 8 channels or 16 channels of
serial data. The input and output port configurations can be set
individually. The AD1940 is controlled via a 4-wire SPI® port; the
AD1941 is controlled by a 2-wire I
2
C bus.
Summary of Contents for EVAL-AD1940EB
Page 12: ...EVAL AD1940EB AD1941EB Rev 0 Page 12 of 32 05880 003 Figure 3 AD1939 Analog Input Filters...
Page 13: ...EVAL AD1940EB AD1941EB Rev 0 Page 13 of 32 05880 004 Figure 4 AD1871 Analog Input...
Page 15: ...EVAL AD1940EB AD1941EB Rev 0 Page 15 of 32 05880 006 Figure 6 Input CPLD...
Page 16: ...EVAL AD1940EB AD1941EB Rev 0 Page 16 of 32 05880 007 Figure 7 AD1940 AD1941 SigmaDSP...
Page 17: ...EVAL AD1940EB AD1941EB Rev 0 Page 17 of 32 05880 008 Figure 8 Output CPLD...
Page 20: ...EVAL AD1940EB AD1941EB Rev 0 Page 20 of 32 05880 011 Figure 11 AD1939 Codec...
Page 21: ...EVAL AD1940EB AD1941EB Rev 0 Page 21 of 32 05880 012 Figure 12 External Digital Outputs...
Page 22: ...EVAL AD1940EB AD1941EB Rev 0 Page 22 of 32 05880 013 Figure 13 SPI I2 C Control Interface...
Page 23: ...EVAL AD1940EB AD1941EB Rev 0 Page 23 of 32 05880 014 Figure 14 Power Supply...
Page 30: ...EVAL AD1940EB AD1941EB Rev 0 Page 30 of 32 NOTES...
Page 31: ...EVAL AD1940EB AD1941EB Rev 0 Page 31 of 32 NOTES...
