28478G-18 Mindspeed Technologies, 28478G-18 Datasheet - Page 173

• 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

Table 7-8.
Figure 7-2.
28478-DSH-002-E
T
T
V
—
T
T
FOOTNOTE:
(1)
(2)
(3)
rst
rst_clk
rst-off
nom
fail
The nominal voltage level refers to a voltage test point in the power-up curve where the system can declare start of a “power good”
signal.
The minimum RST* slew rate applies only to the rising (deassertion) edge of the reset signal, and ensures that system noise cannot
render an otherwise monotonic signal to appear to bounce in the switching range.
The value of T
a. 500 ns (max) from power rail going out of specification by exceeding specified tolerances by more than 500 mV.
b. 100 ns (max) from 5 V rail falling below 3.3 V rail by more than 300 mV.
Symbol
PCI Reset Parameters
PCI Reset Timing
fail
Reset Active Time after
Power Stable
Reset Active Time after
Clock Stable
Nominal Voltage Level
RST* Slew Rate
Power Failure Detect Time
Reset Active to Float Delay
is the minimum of
8478_025
PWR_GOOD
Preliminary Information / Mindspeed Proprietary and Confidential
Signals
(2)
PRST*
Power
PCLK
PCI
Parameter
(1)
(3)
Mindspeed Technologies
V
nom
Three-state
100 ms (typ)
Min
100
Electrical and Mechanical Specifications
—
50
—
—
1
®
T
T
rst-clk
rst
T
fail
Max
T
—
—
—
—
—
40
rst-off
Power
Fail
mV/ns
Unit
ms
µ
—
ns
V
s
160