cx28500 Mindspeed Technologies, cx28500 Datasheet - Page 72

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

Figures 4-3
separate byte-wide framer devices connected to the EBUS with each byte enable line used as the chip select for
separate devices, which allows a full dword data transfer over the EBUS.
Figure 4-3.
Figure 4-4
phase to support multiple framer banks with each bank containing four byte-wide framer devices.
The framers configuration in shared memory is that only the Least Significant Byte (LSB) contains the information
of one frame configuration, the others are unused.
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 how additional address lines can be combined with each byte enable line during the address
and
EBUS Connection, Non-Multiplexed Address/Data, 8 Framers, No Local MPU
4-4
illustrate two examples of non-multiplexed address and data modes.
EAD[31:0]
EBE[3:0]*
ECLK Control Lines
AS*, R/WR*, DS*,
EBE[0]*
EBE[1]*
EBE[2]*
EBE[3]*
EAD9
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EAD[31:24]
EAD[23:16]
EAD[15:8]
EAD[7:0]
EAD[8:0]
Select
Logic
Chip
dev 0,4
Data
CS*
Bt8370
Device 0,4
Addr
Data Addr
CS*
®
Bt8370
Device 1,5
Data Addr
CS*
Bt8370
Device 2,6
Expansion Bus (EBUS)
Figure 4-3
Data Addr
CS*
Bt8370
Device 3,7
illustrates four
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