78q8430-100igt Maxim Integrated Products, Inc., 78q8430-100igt Datasheet - Page 9
78q8430-100igt
Manufacturer Part Number
78q8430-100igt
Description
10/100 Ethernet Mac And Phy
Manufacturer
Maxim Integrated Products, Inc.
Datasheet
1.78Q8430-100IGT.pdf
(88 pages)
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DS_8430_001
1.2.3
Figure 4 shows a typical application diagram for an IP PBX application.
1.3
The 78Q8430 is divided into four sections, as shown in Figure 5.
•
•
•
•
Rev. 1.2
GBI Bus Layer
Mode Logic
DMA Slave
Generic Bus Interface (GBI) Control Layer
Queue Memory Layer
Ethernet Media Access Control (MAC) Layer
Ethernet Physical (PHY) Layer
Access
Logic
GBI
GBI
Overview
IP PBX Application
QUE Write
QUE Write
QUE Write
QUE Write
QUE Read
Controller
Controller
Controller
Snoop
Logic
Logic
Logic
Logic
Logic
QUE
CTL
Queue Memory Layer
Figure 4: Typical FXO VoIP Application
Manager
Memory
QUEUE
SRAM
Pause/
Timers
Figure 5: Device Block Diagram
HNR
10/100 MAC/PHY
78Q8430
MAC Write
MAC Read
Classify
Packet
CAM
Logic
Logic
RMON
10/100 MAC/PHY
78Q8430
Control
Flow
MAC Layer
MAC Control
Registers
MAC RX
& Status
Logic
FIFO
FIFO
RX
TX
MAC TX
Logic
78Q8430 Data Sheet
PCS
PCS
TX
RX
SMI Control
PHY Layer
& Status
Register
PMD
9
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