28478G-18 Mindspeed Technologies, 28478G-18 Datasheet - Page 60
28478G-18
Manufacturer Part Number
28478G-18
Description
Multichannel Synchronous Communications Controller 208-Pin BGA
Manufacturer
Mindspeed Technologies
Datasheet
1.28478G-18.pdf
(195 pages)
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
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MUSYCC provides a PCI bridge to a local bus interface on MUSYCC called the Expansion Bus (EBUS). The
EBUS provides a host processor across the PCI bus to access up to 1 MB of peripheral memory space on the
EBUS.
Although EBUS utilization is optional, the most notable application for the EBUS is the connection to peripheral
devices (e.g., Bt8370 T1/E1 framers) local to MUSYCC’s serial port.
of the EBUS interface with and without local Multiprocessor Unit (MPU).
Figure 3-1.
28478-DSH-002-E
EBUS Functional Block Diagram with Local MPU
8478_007
Preliminary Information / Mindspeed Proprietary and Confidential
Address/Data
3.0 Expansion Bus (EBUS)
Interrupt
Clock
Mindspeed Technologies
Regenerated
Interface
Inverted
EBUS
and
Arbiter
Bus
Bus Arbitration
Address/Data
Control
EINT*
Clock
®
Figures 3-1
Expansion
Local
Bus
and
3-2
Motorola
Framer
Bt8370
T1/E1
MPU
Intel
illustrate block diagrams
47
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