DS80C410 Datasheet, PDF (75/102 Pages) Dallas Semiconductor – Network Microcontrollers with Ethernet and CAN

DS80C410/DS80C411 Network Microcontrollers with Ethernet and CAN
DS80C410 ROM Initialization Code
The DS80C410 firmware automatically executes Initialization Code (ROM_Init) to generate the memory map as
shown in Figure 14 and configure the hardware as follows:
Enables 24-bit contiguous address mode
Logically relocates ROM to addresses FF0000h–FF7FFFh
Enables CE0–3, 2MB/chip enable
Enables PCE0–3
Enables CE4–7, 1M/peripheral chip enable
Merged program/data CE0–3, relocate internal XRAM
Enables extended 1kB stack option
Configure to maximum MOVX stretch value
Configure UARTs for Mode 1 serial operation
(ACON.1:0 = 11b)
(ACON.5 =1)
(P4CNT = 2Fh)
(P5CNT = 07h)
(P6CNT = 27h)
(MCON = AFh)
(ACON.2 = 1)
(CKCON.2:0 = 111b)
Figure 14. Memory Map Following Execution of ROM_Init on DS80C410/DS80C411
INTERNAL MEMORY
program
data
ROM
CAN/BCU XRAM
64kB Internal SRAM
FFFFFFh -
FFDB00h
FF0000h
E00000h -
C00000h -
A00000h -
800000h -
600000h -
400000h -
200000h -
00FFFFh
EXTERNAL MEMORY
merged program/data space
DATA INACCESSIBLE
PROGRAM
INACCESSIBLE
CE7
CE6
CE5
CE4
CE3
CE2
CE1
CE0
000000h -
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