Service Manual Part 2

CIRCUIT DESCRIPTION
4-10
September 2001
Part No. 001-5100-001
Figure 4-3 Memory Utilization
External Flash
(pages 0-7)
External SRAM
(pages 0 and 1)
$7FF
$800
$2BFF
$2C00
$FBFF
$FE00
On-chip ROM (MP/MC = 0)
external (MP/MC = 1)
On-chip SRAM (RAM = 1)
external (RAM = 0)
external
On-Chip SRAM (CNF=1)
external (CNF=0)
Internal Map ps_map = 1 ps_map = 0
Program Space
Data Space
External SRAM
(pages 0 and 1)
Note: same sram in data
space is also mapped to
program space
Internal Map External Map
I/O Space
$5F
$60
$7F
$80
$7FF
$800
external
$FF
$100
$2FF
$300
$4FF
$500
$2BFF
$2C00
On-Chip SRAM (OVLY = 1)
external (OVLY = 0)
On-Chip SRAM
On-Chip SRAM (CNF=0)
reserved
reserved
On-Chip SRAM
mmregs
$0FFF
$1000
$7FFF
$8000
$8FFF
$9000
$9FFF
$A000
$AFFF
$B000
$DFFF
$E000
UART control/status regs
unused
flash page reg (r/w)
mem control reg (r/w)
i2c interface reg (r/w)
unused
ADSIC registers (r/w)
DIGITAL BOARD (CONT’D)