28500-DSH-002-C Datasheet, PDF (73/224 Pages) M/A-COM Technology Solutions, Inc. – Multichannel Synchronous Communications Controller

Expansion Bus (EBUS)
Figure 4-4. EBUS Connection, Non-Multiplexed Address/Data, 16 Framers, No Local MPU
EAD[31:0]
EAD[10, 9]
EAD[31:24]
EAD[23:16]
EAD[15:8]
EAD[7:0]
EAD[8:0]
8
98
98 98 9
Data Addr
Bt8370
CS*
dev 0
Data Addr
Bt8370
CS*
dev 1
Data Addr
Bt8370
CS*
dev 2
Data Addr
Bt8370
CS*
dev 3
Control
Lines
EBE[3:0]*
Chip
Select
Logic
dev 0, bank 0
Control
dev 0, bank 1
dev 0, bank 2
dev 0, bank 3
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.
500052_051
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.
NOTE:
The multiplexed address and data mode example does not allow for 4-byte data transfers.
Figure 4-5 illustrates the EBUS connection, multiplexed address/data, 8 Framers, no local MPU.
28500-DSH-002-C
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