Freescale Semiconductor PXR4030, Reference Manual

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Signal Descriptions
3-2 Freescale Semiconductor
PXR40 Microcontroller Reference Manual, Rev. 1
Table 3-2 is an example of the options for PA on two balls, where “true” and “complement” LVDS outputs
are multiplexed with SCK_C and SINC.
Additionally, when LVDS signals are enabled on balls, their PCR SRC[1:0] bits control the differential
signal output swing increase and decrease, as defined in
Table 3-3 .
Table 3-2. LVDS example
PCR235
1
[PA]
Selection
1
SCKC_SCK_C_LVDSP_GPIO235
PCR236
2
[PA]
Selection
2
SINC_SCK_C_LVDSM_GPIO236
SCKC Ball
function
SINC Ball
function
SCKC SINC SCKC SINC
LVDS LVDS SCK SCK_C_LVDS-
SCKC LVDS SCKC undriven
LVDS SINC undriven SINC
Table 3-3. Differential Signal Output when LVDS is Enabled
SRC1 SRC0
Current
flowing in the
driver
Differential Voltage Across
‘true’ and ‘complement’
0 0 normal default
0 1 increased increased (20%)
1 0 decreased decreased (20%)
1 1 normal same as default