cx28500 Mindspeed Technologies, cx28500 Datasheet - Page 73

• Manufacturer Part Number: cx28500
• Description: Cx28500 Multichannel Synchronous Communications Controller
• Manufacturer: Mindspeed Technologies

Figure 4-4.
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.
Figure 4-5
28500-DSH-002-C
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.
illustrates the EBUS connection, multiplexed address/data, 8 Framers, no local MPU.
EBUS Connection, Non-Multiplexed Address/Data, 16 Framers, No Local MPU
NOTE:
EAD[31:0]
EAD[10, 9]
Control
Lines
EBE[3:0]*
The multiplexed address and data mode example does not allow for 4-byte data transfers.
Select
Logic
Chip
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Mindspeed Technologies
EAD[31:24]
EAD[23:16]
EAD[15:8]
EAD[7:0]
EAD[8:0]
dev 0, bank 0
Control
dev 0, bank 1
dev 0, bank 2
dev 0, bank 3
8
Data Addr
CS*
Bt8370
dev 0
9
8
Data Addr
CS*
Bt8370
dev 1
®
9
8
Data Addr
CS*
Bt8370
dev 2
9
8
Data Addr
CS*
Expansion Bus (EBUS)
dev 3
Bt8370
9
500052_051
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