28478G-18 Mindspeed Technologies, 28478G-18 Datasheet - Page 5

• Manufacturer Part Number: 28478G-18
• Description: Multichannel Synchronous Communications Controller 208-Pin BGA
• Manufacturer: Mindspeed Technologies

Specifications of 28478G-18

• Package: 208BGA
• Maximum Data Rate: 32768 Kbps
• Transmission Media Type: Wire
• Power Supply Type: Analog
• Typical Supply Current: 250 mA
• Typical Operating Supply Voltage: 3.3 V
• Minimum Operating Supply Voltage: 3 V
• Maximum Operating Supply Voltage: 3.6 V

28478-DSH-002-E
4.0 Serial Interface56
5.0 Memory Organization70
4.1
4.2
4.3
4.4
4.5
4.6
4.7
5.1
5.2
3.1.10
3.1.11
Serial Port Interface56
Bit Level Processor57
DMA Controller57
Interrupt Controller57
Channelized Port Mode57
4.5.1
4.5.2
4.5.3
4.5.4
4.5.5
Serial Port Mapping64
Tx and Rx FIFO Buffer Allocation and Management65
4.7.1
4.7.2
4.7.3
Memory Architecture70
5.1.1
5.1.2
Descriptors76
5.2.1
5.2.2
5.2.3
Arbitration52
Connection53
Hyperchannels (Nx64)58
Subchannels (Nx8)58
Frame Synchronization Flywheel59
Change-of-Frame Alignment63
Out-of-Frame63
Example Channel BUFFLOC and BUFFLEN Specification67
Receiving Bit Stream68
Transmitting Bit Stream68
4.7.3.1
Register Map Access and Shared Memory Access71
Memory Access Illustration74
Host Interface Level Descriptors77
5.2.1.1
5.2.1.2
Channel Group Level Descriptors80
5.2.2.1
5.2.2.2
5.2.2.3
5.2.2.4
5.2.2.5
5.2.2.6
5.2.2.7
5.2.2.8
Channel Level Descriptors91
Preliminary Information / Mindspeed Proprietary and Confidential
Transmit Data Bit Output Value Determination69
Global Configuration Descriptor77
Dual Address Cycle Base Pointer79
Group Base Pointer80
Service Request80
Group Configuration Descriptor83
Memory Protection Descriptor85
Port Configuration Descriptor85
Message Length Descriptor86
Time Slot Map87
Subchannel Map89
Mindspeed Technologies
®
Table of Contents
v