M28529G-12 Mindspeed Technologies, M28529G-12 Datasheet - Page 23

• 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

Table 1-4.
The magnitude of the differential delay can be quite large when dealing with T1/E1 links; whereas DSL links
generally follow the same path and have nearly identical delays.
1.1.3
All IMA devices require a software driver to interface to the system host. Since the GSM's primary function only
occurs during startup; the M2852x family relies on the IMA driver to perform these functions. This allows for
maximum flexibility; simpler device design and requires very little overhead from the host.
Mindspeed provides a complete IMA and device driver in ANSI C to simplify system development. This software
has been field tested and can be ported to virtually all systems. This is also covered in chapter 3, the IMA engine
and the M28529TAP IMA Software Programming Guide.
Table 1-5
The additional parameters for each function are listed in the following sections. The functions named IMA_xxxx()
are function calls to the M28525/9. The functions named USER_xxxx() are user defined functions called by the
M28525/9. The pointers to the user defined functions are passed to M28525/9 during initialization as fields in the
DRV initialization structure or after initialization using the IMA_subsys_set() function.
Table 1-5.
28529-DSH-001-K
Initialization
Interrupts
General Note:
Number of links
Class
summarizes the API of the M28525/9 software. All functions require a pointer to the structure IMA_DEV.
16
32
1
2
4
8
Shaded areas can be supported by internal memory. Internal memory is disabled when the external bus is used.
Memory Requirements for Differential Delay (in bytes)
Software Function Summary (1 of 2)
IMA_init_default ()
IMA_init ()
IMA_tick ()
IMA_intr ()
NOTE:
Software Overview
E1
T1
Function
Mindspeed’s software supports both TC and IMA; however, this section only describes IMA
software support.
128 K
256 K
34.375 ms
16 K
32 K
64 K
8 K
27.5 ms
Mindspeed Proprietary and Confidential
Mindspeed Technologies
Initializes the fields of the M28525/9 initialization structure to default values.
This function initializes the IMA software driver and the IMA device.
This function polls the error counters and failure monitoring registers of the IMA device
and must be called at a regular periodic interval.
This function should be called when the device interrupt line has been asserted.
68.75 ms
55 ms
128 K
256 K
512 K
16 K
32 K
64 K
®
Short Description
137.5 ms
110 ms
1024 K
128 K
256 K
512 K
32 K
64 K
Functional Description
220 ms
275 ms
1024 K
2048 K
128 K
256 K
512 K
64 K
8