MSC8122 Freescale Semiconductor, MSC8122 Datasheet - Page 3

• Manufacturer Part Number: MSC8122
• Description: Quad Digital Signal Processor
• Manufacturer: Freescale Semiconductor

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Freescale Semiconductor
Notes: 1. The arrows show the data transfer direction.
PLL/Clock
JTAG Port
Figure 2. StarCore SC140 DSP Extended Core Block Diagram
Sequencer
QBus
JTAG
Program
Management
Boot
ROM
SC140
RAM
Core
Extended Core
M2
Xa
Xb
2. The QBus interface includes a bus switch, write buffer, fetch unit, and a control unit that defines
MQBus
Power
P
MSC8122 Quad Digital Signal Processor Data Sheet, Rev. 15
Instruction
four QBus banks. In addition, the QBC handles internal memory contentions.
SC140
Cache
64
Interface
System
JTAG
64
IRQs
LIC
PLL
Address
EOnCE
Address
Register
ALU
File
Figure 1. MSC8122 Block Diagram
SC140 Core
128
128
Local Bus
Internal System Bus
IRQs
DMA
MQBus
SQBus
Extended Core
PIC
64
Data ALU
SC140
Controller
Register
Data
ALU
Memory
File
Bank 1
Bridge
QBus
Internal Local Bus
IPBus
IP Master
128
32
Registers
Bank 3
QBus
128
SIU
Extended Core
64
64
SC140
RAM
M1
QBC
Semaphores
8 Hardware
Controller
32 Timers
Ethernet
Interface
Memory
4 TDMs
Direct
UART
GPIO
Slave
(DSI)
SQBus
GIC
128
Local Bus
Interface
128
Extended Core
QBus
32/64
32/64
SC140
64
MII/RMII/SMII
System Bus
GPIO Pins
DSI Port
Interrupts
RS-232
3