28478G-18 Mindspeed Technologies, 28478G-18 Datasheet - Page 172

• 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 7-6.
Table 7-7.
Figure 7-1.
28478-DSH-002-E
T
T
T
–
V
T
T
T
—
V
FOOTNOTE:
(1)
(2)
FOOTNOTE:
(1)
(2)
cyc
cyc
high
low
ptp
high
low
ptp
MUSYCC works with any clock frequency between DC and 66 MHz, nominally. The clock frequency can be changed at any time during
operation of the system as long as clock edges remain monotonic, and minimum cycle and high and low times are not violated. The clock
can only be stopped in a low state.
Rise and fall times are specified in terms of the edge rate measured in V/ns. This slew rate must be met across the minimum peak-to-
peak portion of the clock waveform.
MUSYCC works with any clock frequency between DC and 66 MHz, nominally. The clock frequency can be changed at any time during
operation of the system as long as clock edges remain monotonic, and minimum cycle and high and low times are not violated. The clock
can only be stopped in a low state.
Rise and fall times are specified in terms of the edge rate measured in V/ns. This slew rate must be met across the minimum peak-to-
peak portion of the clock waveform.
Symbol
Symbol
PCI Clock (PCLK) Waveform Parameters, 33 MHz PCI Clock
PCI Clock (PCLK) Waveform Parameters, 66 MHz PCI Clock
PCI Clock (PCLK) Waveform
Clock Cycle Time
Clock High Time
Clock Low Time
Clock Slew Rate
Peak-to-Peak Voltage
Clock Cycle Time
Clock High Time
Clock Low Time
Clock Slew Rate
Peak-to-Peak Voltage
8478_023
0.3V
0.4V
Preliminary Information / Mindspeed Proprietary and Confidential
(2)
(2)
dd
(1)
(1)
0.5V
dd
Parameter
Parameter
dd
V
Mindspeed Technologies
0.6 V
T
high
dd
T
cyc
0.4 V
0.4 V
Min
Min
30
11
11
15
Electrical and Mechanical Specifications
1
6
6
1
®
dd
dd
T
0.2 V
low
dd
Max
Max
—
—
—
—
—
—
—
—
4
4
V
min
ptp
Unit
Unit
V/ns
V/ns
ns
ns
ns
ns
ns
ns
V
V
159