TS68882MR33 E2V, TS68882MR33 Datasheet - Page 35

• Manufacturer Part Number: TS68882MR33
• Manufacturer: E2V

Specifications of TS68882MR33

• Operating Temperature (max): 125C
• Operating Temperature Classification: Military
• Lead Free Status / RoHS Status: Compliant

8.23.10
8.23.11
e2v semiconductors SAS 2007
8-bit Data Bus Co-processor Connection
16-bit Data Peripheral Processor Connection
Figure 8-11
bit data bus. The TS68882 is configured to operate over an 8-bit data bus when the SIZE pin is con-
nected to GND. The twenty four least significant data pins (D0-D23) must be connected to eight most
significant data pins (D24-D31) when the TS68882 is configured to operate over an 8-bit data bus (i.e.,
connect D0 to D8, D16 to D24; D1 to D9, D17, and D15;... and D7 to D15, D23 and D31). The DSACK
pins of the two devices are directly connected, although it is not necessary to connect the DSACK1 pin
since the TS68882 never asserts it in this configuration.
•
The following paragraphs describe how to connect the TS68882 to a TS68000, TS68008, or TS68010
processor for operation as a peripheral via an 8- or 16-bit data bus.
Figure 8-12
over an 16-bit data bus. The TS68882 is configured to operate over an 16-bit data bus when the SIZE
pin is connected to V
D15) must be connected to the sixteen most significant data pins (D16 - D31) when the TS68882 is con-
figured to operate over an 16-bit data bus (i.e., connect D0 to D16, D1 to D17,... and D15 to D31). The
DSACK1 pin of the TS68882, is connected to the DTACK pin of the main processor, and the DSACK0 pin
is not used.
When connected as a peripheral processor, the TS68882 chip select (CS) decode is system dependent.
If the TS68000 is used as the main processor, the TS68882 CS must be decoded in the supervisor or
user data spaces. However, if the TS68010 is used as the main processor, the MOVES instruction may
be used to emulate any CPU space access that the TS68020/co-processorTS68030 generates for co-
processor communications. Thus, the CS decode logic for such systems may be the same as in a
TS68020/TS68030 systems, such that the TS68882 will not use any part of the data address spaces.
Figure 8-9.
TS68882/TS68000/TS68008/TS68010 Interfacing
illustrates the connection of a TS68882 to a TS68020/TS68030 as a co-processor over an 8-
illustrates the connection of a TS68882 to a TS68000 or TS68010 as a peripheral processor
32-bit Data Bus co-processor Connection
CC
, and the A0 pin is connected to GND. The sixteen least significant data pins (D0-
0852B–HIREL–06/07
TS68882
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