DSP101 Burr-Brown Corporation, DSP101 Datasheet - Page 20

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

USING DSP101 AND DSP102
WITH MOTOROLA DSP ICS
Figure 18 shows how to use the DSP101 with a Motorola
DSP56001. Using the DSP102 requires using two
DSP56001s. The DSP56001 needs to be programmed to
receive data MSB-first with SYNC in the Bit Mode.
SSF (pin 12) needs to be tied HIGH for using either the
DSP101 or the DSP102 with DSP56001s. This will cause
the DSP101 or DSP102 to transmit an appropriate active
High synchronization pulse on SYNC (pin 15) after a con-
vert command is received by the A/D. Timing is shown in
Figure 1.
USING DSP101 AND DSP102 WITH AT&T DSP ICS
Figures 11, 19, 20, and 21 show how to use the DSP101 and
FIGURE 18. Using DSP101 with DSP56001.
FIGURE 19. Using DSP101 with DSP32C.
±2.75V Analog Input
®
±2.75V Analog Input
DSP101/102
NOTES: (1) DSP56001 programmed for MSB bit first data. (2) DSP56001 data may be either 16-bit or 24-bit.
2
2
VIN
VIN
DSP101
DSP101
NOTE: (1) DSP32C programmed for MSB bit first 16-bit data.
CONV
CONV
SYNC
SOUT
SYNC
SOUT
XCLK
XCLK
SSF
SSF
16
15
20
12
21
16
15
20
12
21
+5V
20
TTL Bit
TTL Bit
Clock
Clock
DSP102 with the DSP16 and DSP32C in different modes.
The AT&T processors need to be programmed to accept
data MSB-first, and the DSP101 or DSP102 needs to have
SSF (pin 12) tied LOW, so that an appropriate active Low
synchronization pulse will be transmitted by the A/D after a
convert command is received.
Figures 19 and 20 show the DSP32C and DSP16 respec-
tively used with the DSP101 to handle a single analog input
channel.
Figure 21 shows how to transmit to a single DSP32C
conversion results from both DSP102 channels in a single
32-bit word, using the Cascade mode on the A/D.
Figure 11 indicates how to build a complete analog input and
analog output system using a DSP32C or DSP16 with a
DSP101 and a Burr-Brown DSP201 D/A.
ICK
ILD
DATA IN
Conversion Rate
SCK
FSR (SC2)
SRD
Conversion Rate
Generator
DSP32C
DSP56001
Generator