cx28560 Mindspeed Technologies, cx28560 Datasheet - Page 71

• Manufacturer Part Number: cx28560
• Description: Hdlc Controller
• Manufacturer: Mindspeed Technologies

CX28560 Data Sheet
3.1.10
Figure 3-3. EBUS Connection, Non-Multiplexed Address/Data, 8 Framers, No Local MPU
28560-DSH-001-B
NOTE(S):
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.
EAD[31:0]
EBE[3:0]*
Connection
ECLK Control Lines
AS*, R/WR*, DS*,
Using the EBUS address lines, EAD[17:0], and the byte enable lines, EBE[3:0]*, the
EBUS can be connected in either a multiplexed or non-multiplexed address and data
mode.
Figures 3-3
modes.
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.
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.
EBE[0]*
EBE[1]*
EBE[2]*
EBE[3]*
EAD9
Figures 3-5
EAD[31:24]
EAD[23:16]
EAD[15:8]
EAD[7:0]
EAD[8:0]
and
Select
Logic
Chip
Mindspeed Technologies™
3-4
and
illustrate two examples of non-multiplexed address and data
dev 0,4
Advance Information
3-6
Data
CS*
Bt8370
illustrate four and eight separate byte-wide framer devices
Device 0,4
Addr
Data Addr
CS*
Bt8370
Device 1,5
Data Addr
CS*
Bt8370
Device 2,6
Data Addr
CS*
Expansion Bus (EBUS)
Bt8370
Device 3,7
101302_007
3
-
9