28478G-18 Mindspeed Technologies, 28478G-18 Datasheet - Page 17

• Manufacturer Part Number: 28478G-18
• Description: Multichannel Synchronous Communications Controller 208-Pin BGA
• Manufacturer: Mindspeed Technologies

Specifications of 28478G-18

• Package: 208BGA
• Maximum Data Rate: 32768 Kbps
• Transmission Media Type: Wire
• Power Supply Type: Analog
• Typical Supply Current: 250 mA
• Typical Operating Supply Voltage: 3.3 V
• Minimum Operating Supply Voltage: 3 V
• Maximum Operating Supply Voltage: 3.6 V

Figure 1-3.
28478-DSH-002-E
8478_003
MUSYCC Application Example—Frame Relay Switch
Ch Grp 0
Port 0
PHY
System Bus – PCM Highway
Ch Grp 1
System Host
Port 1
Preliminary Information / Mindspeed Proprietary and Confidential
PHY
Clk, Data,
Sync
Tx
Ch Grp 2
Port 2
PHY
Sync, OOF
Mindspeed Technologies
Clk, Data,
Rx
Frame Relay Network
PCI Local Bus Bridge
Ch Grp 3
Serial Port Interface
Host Interface (PCI)
Port 3
PHY
CN8478
PCI Bus
Physical Layer
Data Link Layer
Ch Grp 4
Rx Channel 31 Message List
Tx Channel 31 Message List
Channel Group 7 Descriptor
Channel Group 6 Descriptor
Channel Group 5 Descriptor
Channel Group 4 Descriptor
Channel Group 3 Descriptor
Channel Group 2 Descriptor
Channel Group 1 Descriptor
Channel Group 0 Descriptor
Tx Channel ... Message List
Rx Channel ... Message List
Rx Channel 0 Message List
Tx Channel 0 Message List
Port 4
PHY
Ch Grp 5
System Bus – PCM Highway
System Memory
Clk, Data,
Port 5
PHY
Sync
Tx
Ch Grp 6
Port 6
®
PHY
Sync, OOF
Clk, Data,
Ch Grp 7
Rx
Configuration
Port 7
PHY
Interrupt
Queue
Interface
EBUS
Control
Data
Multiplexed
EBUS
and Data
Address
32-Bit
(Optional)
System Description
MPU
4