Eurotech Vector, User Manual

Page: 39 / 45

System Specifications
39 110124-7000A
Backlight
Header J15 , page 32 provides software-controlled power and two control signals to support a backlight
inverter. For further details, see Backlight , page 19 .
Symbol
Parameter Min Typ. Max Units
Backlight power (V_BACKLIGHT)
V
V_BACKLIGHT
Soft-start power (note 6)
5 V
I
V_BACKLIGHT
1 A
Backlight control (L_BKLTEN_B, L_BKLTCTL_FIL)
V
L_BKLTEN_B
High-level output voltage (note 7) 5 V
V
L_BKLTCTL_FIL
High-level output voltage 5 V
Notes:
6. As a volume production option, the input power VIN routes directly to the backlight power signal
V_BACKLIGHT.
7. Support for L_BKLTEN_B at VIN is available as a volume production option.
Audio Interface
The 4-channel HD audio codec provides the audio interface for the Vector. This audio codec supports
a stereo speaker output on header J4 , page 29 , a stereo line out on header J5 , page 29 , and a stereo
microphone input on header J6 , page 30 . For a description of this interface, see Audio Interface ,
page 20 .
Symbol
Parameter Min Typ. Max Units
D
VDD
Codec digital supply voltage 3.3 V
A
VDD
Codec analog supply voltage 5 V
f
S
Sample rate 192 kHz
--- A/D sample resolution 24 bit
Speaker Output (note 8)
R
L
Speaker load 4 8 Ω
P
OUT
Output power, 4Ω load @ 4.75V 2 W
Line Out (note 8)
V
OUT
Full scale output voltage 1.00 V
rms
P
OUT
Output power, 32Ω load 40 60 mW (peak)
Microphone Input (note 8)
V
IN
Full scale input voltage,
0dB boost @ 4.75V
1.05 V
rms
Gain
IN
Microphone boost 0 30 dB
R
IN
Input impedance 50 kΩ
C
IN
Input capacitance 15 pF
Notes:
8. Specifications are taken from the IDT 92HD81 Product Datasheet, V 0.987, 11/09.
Keypad/GPIO
Header J21 , page 33 support up to a 10 x 8 keypad or eighteen GPIO controlled by the SMBus. For
further details, see Keypad/GPIO , page 20 .
Symbol
Parameter Min Typ. Max Units
Keypad (note 9)
V
CC
Supply voltage 3.3 V
V
IH
High-level input voltage 0.7*Vcc 3.6 V
V
IL
Low-level input voltage -0.5 0.3*Vcc V
V
OH
High-level output voltage
I
OH
= -8 mA, V
CC
= 3 V
2.6 V
V
OL
Low-level output voltage
I
OL
= 8 mA, V
CC
= 3 V
0.25 V
Notes:
9. Specifications are taken from the Texas Instrument TCA8418 Product Datasheet , SCPS215B – September
2009 – Revised March 2010.