M28529G-12 Mindspeed Technologies, M28529G-12 Datasheet - Page 84

• Manufacturer Part Number: M28529G-12
• Description: ATM IMA 8.192Mbps 1.8V/3.3V 484-Pin BGA
• Manufacturer: Mindspeed Technologies

Specifications of M28529G-12

• Package: 484BGA
• Utopia Type: Level 2
• Typical Operating Supply Voltage: 1.8|3.3 V
• Minimum Operating Supply Voltage: 1.71|3.135 V
• Maximum Operating Supply Voltage: 1.89|3.465 V
• Maximum Output Rate: 8.192 Mbps

1.10.2
During IMA System loopback 1, data is looped back at the PHY Layer UL2 Interface, but the TxCLAV signals are
ignored from the PHY layer. Data is not passed through the TC Block during this mode.
Figure 1-15. IMA System Loopback
1.11
Please contact Mindspeed for information on reference designs and schematic examples.
1.12
IMA frame rates must be locked to the PHY payload rates (the bandwidth reserved for ATM cells) used by those
PHY ports designated as IMA timing reference links. This applies to both the Transmit and Receive directions. IMA
frame rates can be derived from a number of sources:
•
•
28529-DSH-001-K
IMA_SysClk
•
•
IMA_RefClk
INTERFACE
Fixed Divide-By-24 or
Programmable divider
ATM-SIDE
IMA System Loopback 1
Reference Designs
IMA Clocks
512Kx8
Internal
SRAM
IMA clocks
Rx Block and Passthrough
Tx Block and Passthrough
0
Differential Delay
i
memory interface
Mindspeed Proprietary and Confidential
Mindspeed Technologies
Engine
extmemsel
IMA
pin
Interface Pins
External
Memory
1
INTERFACE
EXT RAM
JTA
G
IMA
INTERFACE
JTAG
Interface Pins
Micro
Counter
INTERFACE
®
MICRO
C
T
s
OneSe
c
During IMA System Loopback 0 data will flow
through the TC block to the serial interface if
enabled.
TC PORTS
Registers
Status
processor
processor
processor
processor
Clocks
TC
Micro
Cell
Cell
Cell
Cell
Registers
Line interface
Line interface
Line interface
Line interface
Control
Duing IMA System loopback 0, if
UTOPIA-UTOPIA mode is selected,
the TxClav signals will be used for
handshaking and data will flow to the
PHY side UTOPIA interface.
TC
30
31
0
1
Functional Description
INTERFACE
PHY-SIDE
69