M28529G-12 Mindspeed Technologies, M28529G-12 Datasheet - Page 213

• 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

2.4.20
This register is used in conjunction with 0x815 to configure the differential delay operation of the IMA core. Register
0x814 and 0x815 are an indirect register pair in that a particular IMA group is selected using register 0x814 and the
configuration for that IMA group is programmed using register 0x815.
2.4.21
28529-DSH-001-K
4–0
7–0
2–0
Bit
Bit
7
6
5
7
6
5
4
3
Default
Default
0x00
0x0
—
—
—
—
—
—
—
0
0x814—IMA_DIFF_DELAY_ADDR (IMA Differential Delay Control Address)
0x815—IMA_DIFF_DELAY_DATA (IMA Differential Delay Control Data)
Control Type
Group Number
Differential Delay
Threshold
Delay Window
Name
Name
—
—
—
—
—
—
—
Mindspeed Proprietary and Confidential
Mindspeed Technologies
Reserved. Set to 0.
0 = Set Delay Threshold for an IMA group
1 = Set Delay Window for an IMA group
Reserved. Set to 0.
M28525: 0–0xF: IMA Group 1–16
M28529: 0–0x1F: IMA Group 1–32
This field contains the cell offset that corresponds to differential delay threshold setting for the
group.
Reserved. Set to 0.
Reserved. Set to 0.
Reserved. Set to 0.
Reserved. Set to 0.
Reserved. Set to 0.
This field contains the number of IMA frames (assuming M=128) that are examined when
setting the differential delay buffer. This field is set based on the facility payload rate.
Delay Window = 0, 5: Value = 255–(Cell_count >> 1)
Delay Window = 1–3, 6–7: Value = 255–Cell_count
Delay Window = 4: Value = 255–(Cell_count >> 2)
0 = 8 frames (1024 cells), for payload rates ≥ 1024 kbps
1 = 4 frames (512 cells), for 1024 kbps > payload rates ≥ 512 kbps
2 = 2 frames (256 cells), for 512 kbps > payload rates ≥ 256 kbps
3 = 1 frame (128 cells), for payload rates < 256 kbps
4 = 16 frames (2048 cells), for payload rates ≥ 1024 kbps
5 = 8 frames (1024 cells), for 1024 kbps > payload rates ≥ 512 kbps
6 = 4 frames (512 cells), for 512 kbps > payload rates ≥ 256 kbps
7 = 2 frame (256 cells), for payload rates < 256 kbps
For Control Type = 0
For Control Type = 1
®
Description
Description
Registers
198