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MMCCMB2103UM/D
User’s Manual
26
Configuration
2.5 Memory Mapped I/O Operation
Address 0x8070_7003 is the MMIO write byte or read byte:
•
Your code can write values to this address to activate or deactivate programming voltage,
and to turn LEDs DS2 through DS5 on or off. Figure 2-1 depicts this write-byte
functionality.
–
A 0 written to bit D0, D1, D2, or D3 turns ON the corresponding LED. A 0 written to
bit D5 enables the programming voltage.
NOTES:
1. The CMB2103 and the MPFB1200 share this chip-select signal.
2. This configuration allows access to only 4 megabytes of MPFB1200 SRAM.
Table 2-6 FLASH Sector Boundaries
Sector
(Block)
Range
0
0x8000_0000 — 0x8000_7FFF
1
0x8000_8000 — 0x8000_BFFF
2
0x8000_C000 — 0x8000_FFFF
3
0x8001_0000 — 0x8001_FFFF
4
0x8002_0000 — 0x8003_FFFF
5
0x8004_0000 — 0x8005_FFFF
6
0x8006_0000 — 0x8007_FFFF
7
0x8008_0000 — 0x8009_FFFF
8
0x800A_0000 — 0x800B_FFFF
9
0x800C_0000 — 0x800D_FFFF
10
0x800E_0000 — 0x800F_FFFF
11
0x8010_0000 — 0x8011_FFFF
12
0x8012_0000 — 0x8013_FFFF
13
0x8014_0000 — 0x8015_FFFF
14
0x8016_0000 — 0x8017_FFFF
15
0x8018_0000 — 0x8019_FFFF
16
0x801A_0000 — 0x801B_FFFF
17
0x801C_0000 — 0x801D_FFFF
18
0x801E_0000 — 0x801F_FFFF
0x8070_7003
D7
D6
D5
D4
D3
D2
D1
D0
not used
not used
VPP
not used
LED DS2 LED DS3 LED DS4
LED DS5
Figure 2-1 MMIO Write Byte
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