cs89712 Cirrus Logic, Inc., cs89712 Datasheet - Page 149

• Manufacturer Part Number: cs89712
• Description: High-performance, Low-power System-on-chip With 10base-t Ethernet Controller
• Manufacturer: Cirrus Logic, Inc.

DC CHARACTERISTICS
Notes: 4. Power dissipation values can be derived by multiplying the IDD current by 2.5 V Core/OSC or 3.3V I/O.
DS502PP2
Operating current consumption (74 MHz)
Core/Osc/RTC @2.5 V, I/O @ 3.3 V
Ethernet active
Operating power consumption (74 MHz)
Ethernet XTAL1 Input Low Voltage
Ethernet XTAL1 Input High Voltage
XTAL1 Input Low Current
XTAL1 Input High Current
Ethernet Port Power Supply Current while
Active 3.3V
Ethernet Port Software Suspend Mode Cur-
rent
10 BaseT Transmitter Differential Output
Voltage (Peak)
Receiver Normal Squelch Level (Peak)
Receiver Low Squelch Level (LoRxSquelch
bit set)
Standby supply voltage
5. The RTC of the CS89712 should be brought up at room temperature. The RTC OSC will NOT function
6. A typical design will provide 3.3 V to the I/O supply (i.e., V
7. Pull-up current = 50 µA typical at V
properly if it is brought up at –40 C. Once operational, it will continue to operate down to –40 C
is to allow the I/O to be compatible with 3.3 V powered external logic (i.e., 3.3 V SDRAMs).
Parameter
(
V
I
IDD
DDSWSUS
Symbol
DDstandby
DD
V
V
V
V
V
I
I
I
ing
IXH
IXL
DD
SQL
operat-
IXH
IXH
ISQ
OD
= 3.3 volts.
TBD
Min
300
125
2.2
-
-
-
-
-
-
Typ
270
-40
0.2
1.5
1.0
90
40
65
-
-
-
DD
IO), and 2.5 V to the remaining logic. This
TBD
TBD
Max
525
290
2.8
-
-
-
-
-
-
Unit
mW
mA
mA
mA
µA
µA
V
V
V
All system active,
running typical pro-
gram, cache dis-
abled, LCD inactive
Secondary side of
Transformer
Primary side of
Transformer
Primary side of
Transformer
Minimum standby
voltage for state
retention and RTC
operation only
Conditions
see above
CS89712
149