28478G-18 Mindspeed Technologies, 28478G-18 Datasheet - Page 179

• 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 7-13.
Table 7-14.
Figure 7-11. EBUS Output Timing Waveform
28478-DSH-002-E
T
T
V
V
V
V
—
FOOTNOTE:
(1)
(2)
FOOTNOTE:
(1)
(2)
dh
de
th
tl
test
max
Minimum and maximum times are evaluated at 80 pF equivalent load. Actual test capacitance may vary, and results should be correlated
to these specifications.
For purposes of active/float timing measurements, the hi-z or off state is when the total current delivered through the component pin is
less than or equal to the leakage current specification at 80 pF equivalent load.
The input test for the 3.3 V environment is done with 0.1 V
more overdrive than this. Production testing can use different voltage values, but must correlate results back to these parameters.
V
voltage values, but must correlate results back to these parameters.
Symbol
max
Symbol
specifies the maximum peak-to-peak voltage waveform allowed for measuring input timing. Production testing can use different
EBUS I/O Timing Parameters (2 of 2)
EBUS I/O Measure Conditions
Input Hold Time from Clock
PCI Clock Fall to ECLK rising edge
Voltage Threshold High
Voltage Threshold Low
Voltage Test Point
Maximum Peak-to-Peak
Input Signal Edge Rate
Preliminary Information / Mindspeed Proprietary and Confidential
8478_033
Output
Parameter
PCLK
Delay
(1)
(1)
(2)
Mindspeed Technologies
Parameter
M66EN = 0
M66EN = 1
dd
of overdrive (over V
V
T
test
val
Electrical and Mechanical Specifications
V
®
test
ih
Min
—
and V
7
0.6 V
0.2 V
0.4 V
0.4 V
1
il
dd
dd
dd
dd
). Timing parameters must be met with no
Value
V
V
th
tl
Max
—
11
Units
V/ns
V
V
V
V
Units
ns
ns
166