cx28500 Mindspeed Technologies, cx28500 Datasheet - Page 43

• Manufacturer Part Number: cx28500
• Description: Cx28500 Multichannel Synchronous Communications Controller
• Manufacturer: Mindspeed Technologies

1.13
CX28500 is packaged in a 35 mm × 35 mm, 580-pin BGA.
The pin input/output functions are defined in
Pin labels, signal names, I/O functions, and signal definitions are provided in
always denoted with a trailing asterisk (*).
Table 1-7.
28500-DSH-002-C
FOOTNOTE:
s/t/s
I/O
o/d
I/O
t/s
O
I
All outputs are CMOS drive levels and can be used with CMOS or TTL-logic.
I/O Pin Types
Input. High impedance, TTL.
Output. CMOS.
Input/Output. TTL input/CMOS output.
Three-state. Bidirectional three-state input/output pin.
Sustained three-state. This is an active-low, three-state signal owned by only one driver at a time. The driver that drives an s/t/
s signal low must drive it high for at least one clock cycle before allowing it to float. A pullup is required to sustain the
deasserted value.
Open drain. This output is driven low only, and a pullup is required to sustain the deasserted value.
CX28500 Hardware Signals Description
Mindspeed Proprietary and Confidential
Mindspeed Technologies
Table
1-7.
Definition
®
Table
1-8. An active low signal is
Introduction
28