DSP101 Burr-Brown Corporation, DSP101 Datasheet - Page 21

• Manufacturer Part Number: DSP101
• Description: DSP-Compatible Sampling Single/Dual ANALOG-TO-DIGITAL CONVERTERS
• Manufacturer: Burr-Brown Corporation

USING DSP101 AND DSP102 WITH ADI DSP ICS
When using the DSP101 or DSP102 with the fixed-point
ADSP21xx series, the processors need to be programmed to
receive data MSB-first.
Figure 22 shows how to use the DSP102 with an ADSP2101
to provide a two-channel simultaneous sampling system.
Figure 23 shows the connections required to generate an
analog input channel using an ADSP2105 with the DSP101.
FIGURE 20. Using DSP101 with DSP16.
FIGURE 21. Using DSP102 with DSP32C in Cascade Mode.
±2.75V Analog Input
±2.75V Analog Input
NOTES: (1) DSP32C programmed 32-bit data MSB bit first. (2) Data format is Channel A, 16 bits, MSB first, then Channel B.
±2.75V Analog Input
Channel A
Channel B
25
2
2
VINA
VINB
VIN
DSP102
DSP101
SOUTA
SOUTB
NOTE: DSP16 programmed for MSB bit first, 16-bit data.
CONV
SYNC
CASC
XCLK
SSF
CONV
SOUT
SYNC
XCLK
SSF
16
15
20
17
22
12
21
16
20
15
12
21
+5V
NC
21
TTL Bit
Clock
TTL Bit
The same basic circuit can be used to connect a DSP101 to
the ADSP2101.
Figure 11 indicates how to build a complete analog I/O
system using either the ADSP2101 or the ADSP2105 with a
DSP101 and a Burr-Brown DSP201 D/A.
The two serial ports on the ADSP2101 can also be used with
the DSP102 and the Burr-Brown DSP202 D/A to make two
complete analog I/O channels, as indicated in footnote 2 of
Figure 14.
Clock
ICK
DATA IN
ILD
Conversion Rate
ICK
ILD
DATA IN
Conversion Rate
Generator
DSP16
Generator
DSP32C
DSP101/102
®