CS89712-CB View Datasheet(PDF) - Cirrus Logic

Part Name

Description

MFG CO.

CS89712-CB

High-Performance, Low-Power System-on-Chip with 10BASE-T Ethernet Controller

Cirrus Logic 

CS89712

DC CHARACTERISTICS (

Parameter

Symbol Min

Operating current consumption (74 MHz)

Core/Osc/RTC @2.5 V, I/O @ 3.3 V

Ethernet active

IDDoperat-

ing

Operating power consumption (74 MHz)

Ethernet XTAL1 Input Low Voltage

VIXH

-

Ethernet XTAL1 Input High Voltage

VIXH

-

XTAL1 Input Low Current

IIXL

-

XTAL1 Input High Current

IIXH

-

Ethernet Port Power Supply Current while

IDD

-

Active 3.3V

Ethernet Port Software Suspend Mode Cur- IDDSWSUS -

rent

10 BaseT Transmitter Differential Output

Voltage (Peak)

VOD

2.2

Receiver Normal Squelch Level (Peak)

VISQ

300

Typ Max

90 TBD

270 TBD

0.2 -

1.5 -

-40 -

40

-

65

-

1.0 -

- 2.8

- 525

Receiver Low Squelch Level (LoRxSquelch VSQL 125

-

290

bit set)

Standby supply voltage

VDDstandby TBD

Unit

Conditions

All system active,

running typical pro-

mA gram, cache dis-

abled, LCD inactive

mW

see above

V

V

µA

µA

mA

mA

Secondary side of

Transformer

Primary side of

Transformer

Primary side of

Transformer

V

Minimum standby

voltage for state

retention and RTC

operation only

Notes: 4. Power dissipation values can be derived by multiplying the IDD current by 2.5 V Core/OSC or 3.3V I/O.

5. The RTC of the CS89712 should be brought up at room temperature. The RTC OSC will NOT function

properly if it is brought up at –40°C. Once operational, it will continue to operate down to –40°C.

6. A typical design will provide 3.3 V to the I/O supply (i.e., VDDIO), and 2.5 V to the remaining logic. This

is to allow the I/O to be compatible with 3.3 V powered external logic (i.e., 3.3 V SDRAMs).

7. Pull-up current = 50 µA typical at VDD = 3.3 volts.

DS502PP2

149

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