zl50409 Zarlink Semiconductor, zl50409 Datasheet - Page 27

• Manufacturer Part Number: zl50409
• Description: Managed 9-port 10/100m Ethernet Switch
• Manufacturer: Zarlink Semiconductor

Index Reg 1
(Addr = 1)
16-bit Address
Index Reg 0
(Addr = 0)
8-bit Data Bus
Config Data
(Addr = 2)
Registers
Inderect
Internal
Access
Reg
Figure 3 - Overview of the 8/16-bit Interface
3-bit Address Bus
CPU Frame Reg
8/16-bit Data Bus
Processor
CPU frame
Address
Receive
(Addr = 3)
Zarlink Semiconductor Inc.
FIFO
CPU frame
ZL50409
Transmit
FIFO
27
8/16-bit Data Bus
Command/
Status Reg
(Addr = 4)
I/O Data MUX
Interrupt
(Addr = 5)
Interrupt
Reg
8/16-bit Data Bus
Command 1
Receive
Control
FIFO
Command 1 Reg
(Addr = 6)
Control
Command 1
Transmit
Control
FIFO
Data Sheet
Command 2
Command 2
(Addr = 7)
Transmit
Control
Control
FIFO
Reg