CX28229G-14 Mindspeed Technologies, CX28229G-14 Datasheet - Page 180
CX28229G-14
Manufacturer Part Number
CX28229G-14
Description
ATM IMA 800Mbps 1.8V/3.3V 256-Pin BGA
Manufacturer
Mindspeed Technologies
Datasheet
1.CX28229G-14.pdf
(271 pages)
Specifications of CX28229G-14
Package
256BGA
Utopia Type
Level 2
Typical Operating Supply Voltage
1.8|3.3 V
Minimum Operating Supply Voltage
1.71|3 V
Maximum Operating Supply Voltage
1.89|3.6 V
Maximum Output Rate
800 Mbps
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Registers
7-80
7–5
4–0
3–0
4–0
Bit
4
Default
0x00
0x0
—
0
0
0x416—IMA_DSL_CLOCK_GEN_ADDR (IMA DSL Clock Generator Control)
Control Type
Transmit / Receive
Group Number
Port Number
This register is used in conjunction with 0x417 to configure the operation of the DSL
Clock Generator in the IMA core. Register 0x416 and 0x417 are an indirect register
pair in that a particular clock generator element is selected using register 0x416 and
the configuration for that element is programmed using register 0x417.
The overall operation of the clock generators are governed by the following
equations:
Link Payload Rate = 8 kbps * (Multiplier Factor)
A further constraint is:
In a typical G.shdsl application, Intermediate Frequency is set to 2.56 MHz and the
Reference Denominator is set to 320. Other settings are possible as long as the above
equations and constraints are met.
Name
—
Prescaler Factor = Prescaler Numerator / (Prescaler Terminal Count + 1)
Intermediate Frequency = Reference Clock Frequency * Prescaler Factor
Reference Denominator = 257 + Reference Clock Divisor
8 kHz = Intermediate Frequency / (Reference Denominator)
Maximum Link Payload Rate ≤ Intermediate Frequency ≤ IMA_SysClk/16
Mindspeed Technologies
0 = Basic Setup
1 = Pre-scaler Terminal Count
2 = Pre-scaler Numerator
3 = Reference Divisor
4 = IMA Group Factor LSBs
5 = IMA Group Factor MSB
6 = Rx Timing Synthesizer Factor LSBs
7 = Rx Timing Synthesizer Factor MSB
Reserved. Set to 0.
0 = Receive IMA Group
1 = Transmit IMA Group
CX28224: 0–1: IMA Group 1–2
CX28225: 0–3: IMA Group 1–4
CX28229: 0–0xF: IMA Group 1–16
CX28224: 0–1: Port 0–1
CX28225: 0–3: Port 0–3
CX28229: 0–0x1F: Port 0–31
For Control Type = 0, 1, 2, 3
For Control Type = 4, 5
For Control Type = 6, 7
Description
™
CX28224/5/9 Data Sheet
28229-DSH-001-D
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