28478G-18 Mindspeed Technologies, 28478G-18 Datasheet - Page 67

• 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 3-5.
Figure 3-6
phase to support multiple framer banks with each bank containing four byte-wide framer devices.
In the multiplexed address and data mode, four byte-wide peripheral devices are connected to the EBUS. In this
mode, 8 bits of the 32-bit EBUS transfer data to and from each device individually.
28478-DSH-002-E
GENERAL NOTE:
1. EBEx[3:0]* selects device x in each framer block.
2. EAD[31:0], AS* are supplied to each framer block.
3. EBEx*, AS* are supplied to each chip select block.
8478_011
illustrates how additional address lines can be combined with each byte enable line during the address
EBUS Connection, Non-multiplexed Address/Data, 61 Framers, No MPU
NOTE:
EBE[3:0]
EAD[31:0]
Control
EAD[10,9]
Lines
EINT*
Preliminary Information / Mindspeed Proprietary and Confidential
Select
Logic
Chip
The multiplexed address and data mode example does not allow for 4-byte data transfers.
EAD[31:24]
EAD[23:16]
EAD[15:8]
EAD[7:0]
EAD[8:0]
Dev 0, Bank 0
Mindspeed Technologies
Control
Dev 0, Bank 1
Dev 0, Bank 2
Dev 0, Bank 3
Dev 0, Bank 4
8
Data Addr
2xCN8370
CS*
Dev 0
9
Dev 1
8
Data Addr
2xCN8370
CS*
9
®
Dev 2
8
Data Addr
2xCN8370
CS*
9
Dev 3
8
Data Addr
2xCN8370
CS*
Expansion Bus (EBUS)
9
54