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

• 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

System Description
1.1
Pin Descriptions
Figures 1-4
through
1-7
illustrate the pinouts for CN8478, CN8474A, CN8472A, and CN8471A. Signals marked
with black are NCs.
Tables 1-1
and
1-2
summarize the pin assignments for the CN8478 in the MQFP and PBGA
packages, respectively.
Table 1-3
lists the pin input and output functions.
Table 1-4
lists the hardware signal
definitions.
Note: Connection requirement for unused Channel Groups below:
NC input pins should be grounded and NC output pins should be left floating. Refer to
Table 1-4
for pin signal
definitions related to the unused Channel Group.
1. CN8471A, "NC" pins for Channel Group 1 through 7.
2. CN8472A, "NC" pins for Channel Group 2 through 7.
3. CN8474A, "NC" pins for Channel Group 4 through 7.
®
Mindspeed Technologies
5
28478-DSH-002-E
Preliminary Information / Mindspeed Proprietary and Confidential