M28529G-12 Mindspeed Technologies, M28529G-12 Datasheet - Page 103
M28529G-12
Manufacturer Part Number
M28529G-12
Description
ATM IMA 8.192Mbps 1.8V/3.3V 484-Pin BGA
Manufacturer
Mindspeed Technologies
Datasheet
1.M28529G-12.pdf
(309 pages)
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
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In TC Block UTOPIA mode, both Single and Dual Clav/Enb modes are supported, however the Single Clav/Enb
mode only supports 31 addresses. UTOPIA address 0x1F is a null address. In dual Clav/Enb mode, the device can
respond as 32 unique phy devices (by sharing the same address but using different Clav/Enb’s), however address
0x1F is still a null address.
1.13.3.3
An ATM forum compliant UTOPIA interface is provided for interfacing to PHY layer devices. Several unique features
should be noted:
1. It is only UTOPIA level 2.
2. This bus supports 8-bit and 16-bit wide data paths.
3. The UTOPIA interface has a second set of control lines (Dual Clav/Enb), which allow up to 32 ATM devices to
4. When using only a single Clav/Enb the device can be programmed to recognize null address 0x1F as a valid
Figure 1-25. M28529 Multiple UTOPIA Control Lines
28529-DSH-001-K
be connected to the bus. These can be connected as shown in
with up to 16 devices each, all sharing common address and data lines but with separate control lines.
(Remember, UTOPIA uses address 0x1F as the null address thus limiting the bus to 31 ports. However, the
standard also allows for multiple ClAv and Enable lines.)
address. Note that the TC block does not support 0x1F as an address. Thus when using the Utopia-Serial
configuration, dual Clav/Enb must be used if 32 ports are desired.
General Note:
Only the Transmit side is shown for clarity. The Receive side is identical.
UTOPIA bus
ATM Layer
PHY-Side UTOPIA
Mindspeed Proprietary and Confidential
Mindspeed Technologies
M28529
phyUTxClav_0
phyUTxEnb_0
phyUTxClav_1
phyUTxEnb_1
UTOPIA data/
address bus
Figure
®
1-25. This effectively provides two buses
UTOPIA Port 8−15
UTOPIA Port 8−15
UTOPIA Port 0−7
UTOPIA Port 0−7
CX28985
CX28985
CX28985
CX28985
Functional Description
IMA Link
Number
1
8
9
16
17
24
25
32
500027_056
88
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