Micronas SDA 6000, User Manual

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SDA 6000
PRELIMINARY DATA SHEET
Version 2.1
C16X Microcontroller
4 - 8 Micronas
Figure 4-1 M2 Memory Path Block Diagram
All memory locations are byte and word readable. The internal memories (IRAM, XRAM)
and the external dynamic memory (SDRAM) are byte and word writable, but external
static memory is only word writable. Bytes are stored at even or odd byte addresses.
Words are stored in ascending memory locations, with the low byte at an even byte
address being followed by the high byte at the next odd byte address. Double words
(instructions only) are stored in ascending memory locations as two subsequent words.
Single bits are always stored in the specific bit position at a word address. Bit position 0
is the least significant bit of the byte at an even byte address and bit position 15 is the
most significant bit of the byte at the next odd byte address. Bit addressing is supported
by a part of the special function registers, a part of the IRAM and the general purpose
registers (GPRs).
UED11214
SDRAM
ROM1
ROM2
EBI
AMI
ICACHE
DCACHE
ACQ
C16X
Boot ROM
DG
PMBUS
XBUS
Memory
External M2