SAB82538 Datasheet, PDF (28/253 Pages) Infineon Technologies AG – ICs for Communications

SAB 82538
SAF 82538
1.4.2.3 ESCC8 with MC 68020, 68030
Figure 6 gives an example of interfacing the ESCC8 to a 32-bit Motorola
microprocessor. Some glue logic is necessary. The signal BUS LOW ENABLE (BLE)
has to be decoded out of transfer size information (SIZ0,1) and A0. The ESCC8 interface
logic has to respond as a 16-bit peripheral (DSACK1,0 = 01_H) during register access and
interrupt acknowledge cycles.
Figure 6
ESCC8 with 68020 µP
Semiconductor Group
28