Electrical Characteristics
312 Datasheet
NOTES:
1. The I/O buffer supply voltage is measured at the PCH package pins. The tolerances shown in Table 8-11
are inclusive of all noise from DC up to 20 MHz. In testing, the voltage rails should be measured with a
bandwidth limited oscilloscope that has a rolloff of 3 dB/decade above 20 MHz.
2. Includes Single Ended clocks REFCLK14IN, CLKOUTFLEX[3:0] and PCICLKIN.
3. Includes only DC tolerance. AC tolerance will be 2% in addition to this range.
8.5 Display DC Characteristics
NOTES:
1. Measured at each R, G, B termination according to the VESA Test Procedure – Evaluation of Analog Display
Graphics Subsystems Proposal (Version 1, Draft 4, December 1, 2000).
2. Max steady-state amplitude
3. Min steady-state amplitude
4. Defined for a double 75- termination.
5. Set by external reference resistor value.
C
IN
Input Capacitance – All Other — — TBD pF F
C
= 1 MHz
C
OUT
Output Capacitance — — TBD pF F
C
= 1 MHz
C
I/O
I/O Capacitance — — 10 pF F
C
= 1 MHz
Typical Value
C
L
XTAL25_IN 3 pF
C
L
RTCX1 6 pF
Table 8-12. Signal Groups
Signal Group Associated Signals Note
LVDS
LVDSA_DATA[3:0], LVDSA_DATA#[3:0], LVDSA_CLK, LVDSA_CLK#,
LVDSB_DATA[3:0], LVDSB_DATA#[3:0], LVDSB_CLK, LVDSB_CLK#
CRT DAC
CRT_RED, CRT_GREEN, CRT_BLUE, CRT_IRTN, CRT_TVO_IREF
Digital DisplayPort
Auxilliary
DDP[D:B]_AUX[P,N]
Table 8-13. CRT DAC Signal Group DC Characteristics: Functional Operating Range
(VccADAC = 3.3 V ±5%)
Parameter Min Nom Max Unit Notes
DAC Resolution
—8—Bits 1
Max Luminance (full-scale)
0.665 0.7 0.77 V 1, 2, 4 white video level voltage
Min Luminance
— 0 — V 1, 3, 4 black video level voltage
LSB Current
—73.2—uA 4, 5
Integral Linearity (INL)
-1 — 1 LSB 1, 6
Differential Linearity (DNL)
-1 — 1 LSB 1, 6
Video channel-channel voltage ampli-
tude mismatch
——6% 7
Monotonicity
Yes
Table 8-11. Other DC Characteristics (Sheet 2 of 2)
Symbol Parameter Min Nom Max Unit Notes
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