DSP101 Burr-Brown Corporation, DSP101 Datasheet - Page 18

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

based on using the TME320Cxx in the mode where SSF
(Select Synch Format, pin 12) is tied HIGH, so that there is
an active High synchronization pulse generated by the
DSP101 or DSP102 after receiving a convert command. The
synchronization pulse can be changed to active Low simply
by making SSF LOW, where appropriate, without changing
the basic operation of the A/Ds.
FIGURE 14. Two-Channel Analog Input and Output System with TMS320C30.
FIGURE 15. Two-Channel Analog Input and Output System with TMS320C30 in Cascade Mode.
±2.75V Analog Input
±2.75V Analog Input
±2.75V Analog Input
±2.75V Analog Input
Channel A
Channel B
Channel A
Channel B
NOTES: (1) Program TMS320C30 for 32-bit mode. (2) Sample rate on DSP102 and DSP202 may differ. (3) DSP32C may be used in this mode.
(4) See Burr-Brown DSP201/202 product data sheet for full description of this DAC.
NOTES: (1) Sample rate on DSP102 and DSP202 may differ. (2) Analog Devices ADSP2101 may be used. SPORT1 and SPORT2
are used for serial MSB first communication. (3) See Burr-Brown DSP201/DSP202 product data sheet for full description of this DAC.
®
DSP101/102
25
25
2
2
VINA
VINB
VINA
VINB
DSP102
DSP102
SOUTA
SOUTB
SOUTA
SOUTB
CONV
CONV
SYNC
CASC
SYNC
CASC
XCLK
XCLK
SSF
SSF
16
20
17
15
12
22
21
16
15
12
22
21
20
17
+5V
NC
+5V
+5V
CLKR-0
CLKR-1
DR-0
DR-1
FSR-0
FSR-0
FSR-1
CLKR-0
DR-0
Conversion Rate
Conversion Rate
Generator
Generator
TMS320C30
TMS320C30
TTL Bit
TTL Bit
Clock
Clock
18
CLKX-0
CLKX-0
CLKX-1
In all cases, the DSP101 and DSP102 will transmit data
MSB-first, and the TMS320Cxx needs to be programmed
for this.
Figure 11 shows a circuit for using the TMS320C25 or
TMS320C30 in a complete analog input and analog output
system using the DSP101 along with the Burr-Brown DSP201
D/A.
FSX-0
(1)
(2)
FSX-0
FSX-1
DX-0
DX-0
DX-1
+5V
+5V
+5V
+5V
+5V
12
13
14
11
10
16
15
12
13
14
11
10
16
15
9
9
XCLK
SINA
SINB
SYNC
SSF
SWL
CASC
CONV
XCLK
SINA
SINB
SYNC
SSF
SWL
CASC
CONV
DSP202
DSP202
VOUTA
VOUTB
VOUTA
VOUTB
(4)
(3)
21
5
21
5
±3V Analog Output
±3V Analog Output
±3V Analog Output
±3V Analog Output
Channel A
Channel B
Channel A
Channel B