2.2 Memory Map

Only page 0 of the RTX2010 memory address space is used for ADS. The range from 0xF000 to 0xFFFF is used as IO address space (see also table 2).

Table 2: Memory Map

Physical Address	Description
0x0000 .. 0x3FFF	16 kBytes PROM
0x0000 .. 0xEFFF	60 kBytes static RAM
0xF0E0	access resets watchdog counter

The access to the CDMS registers, to ADC and the multiplexer and to the Control Register is performed via the RTX2010 G-Bus, because the access via the G-Bus is more effective (see table 3).

Table 3: G-Bus Map

G-Bus Address	Read Access	Write Access
0	12 bit Analog-to-Digital Converter	Housekeeping Channel 0
1	not used	Housekeeping Channel 1
2	not used	Housekeeping Channel 2
3	not used	Housekeeping Channel 3
4	not used	Housekeeping Channel 4
5	not used	Housekeeping Channel 5
6	not used	ADS Control Register
7	CDMS Input Data Register	CDMS Output Data Register