MQ-1168 Evaluation Board Users Guide
MediaQ Incorporated
Board Revision 2
Revision A
4/18/02
Preliminary 4
Miscellaneous
Reference
Type
Description
D2
LED
Used to test GPIO 54 functionality
Jumpers
Reference
Type
Description
JP1, JP4,
JP3, JP2,
JP7, JP5,
JP6
2 pin header
Power measurement jumpers for FVDD (flat panel), BVDD (Bus), PVDD
(USB), AVDD18 (Oscillator), AVDDP1/2 (PLL1/2), MVDD (SRAM)
and CVDD (Core). Normal operation requires either these jumpers or
resistors R208, R209, R210, R211, R215, R216 and R217 installed.
J6
2 pin header
Sets strapping for GPIO3 which selects the mode of the GPIO4/PDWN#
pin. GPIO4 enabled (J6 not installed) or PDWN# enabled (J6 installed).
When J6 is installed (PDWN# mode), the audio functionality is lost.
J10
3 pin header
Selects powerdown mode that disables the CPU interface (1-2) or normal
operation (2-3). Power down mode is only possible if J6 is not installed
(PDWN# pin mode selected)
J8
3 pin header
GPIO54 used to drive LED (2-3) or available for use for Secure Digital
Write Protect GPIO (1-2). When used with the LED, the write protect
functionality is lost.
Stuffing Options
Reference
Type
Description
R118/R119
Various
Determines whether Xtal or external oscillator is used. For
Xtal operation, install Xtal Y3 and remove R118 and
R119. For external oscillator operation, remove Xtal Y3
and C121 and for 1.8V oscillators or to drive OSCO at
3.3V, install R118 (0 ohm) and remove R119. To drive
OSCO at 1.8V with 3.3V oscillator, install R118 (120
ohm) and R119 (150 ohm).
R6,R7
0 ohm
resistors
Determines whether FP_VSCAN_DIR/FP_HSCAN_DIR
are pulled up to 3.3V from the bus (R7 installed) or from
the on-board regulator (R6 installed)
R44, R52, R54, R57, R58,
R60, R62, R65, R66, R68,
R71, R73, R110, R112,
R113, R115
R43, R51, R53, R56, R59,
R61, R64, R67, R70, R72,
R78, R92
0 ohm
resistors
Installed in order to use Philips UDA1341TS I2S CODEC,
removed when AC97 CODED used
Installed in order to use Crystal CS4021 AC97 CODEC,
removed when I2S CODEC used
R25, R33
0 ohm
resistors
Brooktree decoder video clock source is gated clock (R25)
or ungated CLK2 (R33). The gated clock is assumed by
our software at present.