Digi NS7520 manual A p t e r 7 M e m o r y C o n t r o l l e r M o d u l e

System Control register	63
System Status register	68
Software Service register	70
Timer Control registers	70
Timer Status registers	73
PORTA Configuration register	74
PORTC Configuration register	77
Interrupts	80
Interrupt controller registers	81
C h a p t e r 7 : M e m o r y C o n t r o l l e r M o d u l e	85
About the MEM module	86
MEM module hardware initialization	86
Pin configuration	86
MEM module configuration	88
Setting the chip select address range	88
Memory Module Configuration register	90
Chip Select Base Address register	93
Chip Select Option Register A	97
Chip Select Option Register B	101
Static memory (SRAM) controller	102
Single cycle read/write	103
Burst cycles	104
NS7520 DRAM address multiplexing	105
Using the internal multiplexer	105
Using the external multiplexer	108
DRAM refresh	109
FP/EDO DRAM controller	109
Single cycle read/write	110
FP/EDO DRAM burst cycles	111
SDRAM	111
NS7520 SDRAM interconnect	112
SDRAM A10/AP support	116
Command definitions	117
Memory timing fields — SDRAM	118
BSIZE configuration	118
SDRAM Mode register	119

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