DSP56800ERM FREESCALE [Freescale Semiconductor, Inc], DSP56800ERM Datasheet - Page 8

• Manufacturer Part Number: DSP56800ERM
• Description: 16-bit Digital Signal Controllers
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

Note:
Note:
8
JTAG Port
Controller
External
Module
Linking
GPIO
CHIP
TAP
TAP
Flash memories are encapsulated within the Flash Interface Unit (FIU). Flash control is accomplished
by the I/O to the FIU over the peripheral bus, while reads and writes are completed between the core
and the Flash memories.
The primary data RAM port is 32 bits wide. Other data ports are
NOTE: All Flash reads and writes are routed through
the Flash interface units, which encapsulate the Flash
memories. This is not shown for clarity’s sake.
4
JTAG / EOnCE
xdb2_m[15:0]
cdbr_m[31:0]
56800E
pdb_m[15:0]
pdb_m[23:0]
cdbw[31:0]
xab2[23:0]
pab[20:0]
Figure 1-1 System Bus Interfaces
56F8013 Technical Data, Rev. 2
Program writes
can be done on
primary port of
data memory
Program reads
can be done on
secondary port
of data memory
Program
Bridge
IPBus
IPBus
Program
Data /
RAM
Flash
16 bits.
secondary data read port
primary data read port
Interface
Freescale Semiconductor
Flash
To Flash
Control Logic
Unit
Preliminary