CE6313

Data Sheet

18

Intel Corporation

3.3

Secondary 2-wire Bus for Tuner Control

The CE6313 has a General Purpose Port that can be configured to provide a secondary 2-wire bus with full bi-

directional operation. When pass-through is enabled, a transparent connection is made to the tuner. This innovative

design simplifies the software required to program the tuner.

Pass-through mode is selected by setting register (20) GPP_CTRL[bit-6] = 1.

The allocation of the pins is: DATA2 = pin14, CLK2 = pin 15.

4.0

Electrical Characteristics

4.1

Recommended Operating Conditions

4.2

Absolute Maximum Ratings

Note 1: Stresses exceeding these listed under 'Absolute Ratings' may induce failure. Exposure to absolute maximum ratings for

extended periods may reduce reliability. Functionality at or above these conditions is not implied.

Parameter

Symbol

Min.

Typ.

Max.

Units

Core power supply voltage

CVdd

1.71

1.8

1.89

V

Periphery power supply voltage

Vdd

3.13

3.3

3.47

V

1. When not using a crystal, XTI may be driven from an external source over the frequency range shown.

2. The upper limit is set by DiSEqC requirements. If DiSEqC is not required, then external frequencies up to 27.00 MHz can be

used.

Fxt1

3.99

22.66

MHz

Crystal oscillator frequency

Fxt2

9.99

16.01

MHz

3. The maximum serial clock speed on the primary 2-wire bus is related to the input clock frequency and is limited to 100 kHz with

a 4.0 MHz clock.

Fclk1

400

kHz

Ambient operating temperature

0

70

°C

Parameter

Symbol

Min.

Max.

Unit

Power supply

Vdd

-0.3

4.5

V

CVdd

-0.3

2.3

Voltage on input pins (5 V rated)

Vi

-0.3

6.5

V

Voltage on input pins (3.3 V rated)

Vi

-0.3

Vdd + 0.5

V

Voltage on input pins (1.8 V rated, e.g., XTI)

Vi

-0.3

CVdd + 0.5

V

Voltage on output pins (5 V rated)

Vo

-0.3

5.5

V

Voltage on output pins (3.3 V rated)

Vo

-0.3

Vdd + 0.5

V

Voltage on output pins (1.8 V rated, e.g., XTO)

Vo

-0.3

CVdd + 0.5

V

Storage temperature

Tstg

-55

150

°C

Operating ambient temperature

Top

0

70

°C

Junction temperature

Tj

125

°C

ESD protection (human body model)

2

kV