28478G-18 Mindspeed Technologies, 28478G-18 Datasheet - Page 174
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28478G-18
Manufacturer Part Number
28478G-18
Description
Multichannel Synchronous Communications Controller 208-Pin BGA
Manufacturer
Mindspeed Technologies
Datasheet
1.28478G-18.pdf
(195 pages)
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
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Table 7-9.
Table 7-10.
Table 7-11.
28478-DSH-002-E
T
T
T
T
T
T
T
T
T
T
T
T
T
T
V
V
V
FOOTNOTE:
(1)
(2)
(3)
(4)
FOOTNOTE:
(1)
(2)
(3)
(4)
(5)
on
off
su
on
off
su
val
val
ds
dh
val
val
ds
dh
th
tl
test
(ptp)
(ptp)
(ptp)
(ptp)
Minimum and maximum times are evaluated at 80 pF equivalent load. Actual test capacitance may vary, and results should be correlated
to these specifications.
REQ* and GNT* are the only point-to-point signals and have different output valid delay and input setup times than bused signals. GNT*
has a setup of 10.
For purposes of active/float timing measurements, the high-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.
T
Minimum and maximum times are evaluated at 80 pF equivalent load. Actual test capacitance may vary, and results should be correlated
to these specifications.
REQ* and GNT* are the only point-to-point signals and have different output valid delay and input setup times than bused signals. GNT*
has a setup of 10.
For purposes of active/float timing measurements, the high-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.
T
T
Symbol
Symbol
VAL
val
val
= 11 ns maximum for SERR.
= 17 ns maximum for INTA.
Symbol
= 17 ns max for INTA.
PCI I/O Timing Parameters, 33 MHz PCI Clock
PCI I/O Timing Parameters, 66 MHz PCI Clock
PCI I/O Measure Conditions (1 of 2)
PCLK to Signal Valid Delay—Bused Signal
PCLK to Signal Valid Delay—Point To Point
Float to Active Delay
Active to Float Delay
Input Setup Time to Clock—Bused Signal
Input Setup Time to Clock—Point To Point
Input Hold Time from Clock
PCLK to Signal Valid Delay—Bused Signal
PCLK to Signal Valid Delay—Point To Point
Float to Active Delay
Active to Float Delay
Input Setup Time to Clock—Bused Signal
Input Setup Time to Clock—Point To Point
Input Hold Time from Clock
Voltage Threshold High
Voltage Threshold Low
Voltage Test Point
Preliminary Information / Mindspeed Proprietary and Confidential
(3)
(3)
(3)
(3)
Parameter
Parameter
Mindspeed Technologies
(1)
(1)
Parameter
(2)
(2)
(1, 2, 4)
(1, 2, 4, 5)
(2)
(2)
(1, 2)
(1, 2)
Electrical and Mechanical Specifications
®
Min
—
—
10
2
2
7
1
0.6 V
0.2 V
0.4 V
Min
—
2
2
2
4
5
1
dd
dd
dd
Value
Max
11
12
13
28
—
—
—
Max
14.5
10
—
—
—
8
8
Unit
V
V
V
Unit
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
161
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