Intel PXA255 Developer's Manual page 42

System Architecture
Table 2-6. Pin & Signal Descriptions for the PXA255 Processor (Sheet 4 of 9)
Pin Name Type
L_DD[13]/
ICOCZ
GPIO[71]
L_DD[14]/
ICOCZ
GPIO[72]
L_DD[15]/
ICOCZ
GPIO[73]
L FCLK/
ICOCZ
GPIO[74]
L LCLK/
ICOCZ
GPIO[75]
L PCLK/
ICOCZ
GPIO[76]
L BIAS/
ICOCZ
GPIO[77]
Full Function UART Pins
FFRXD/
ICOCZ
GPIO[34]
FFTXD/
ICOCZ
GPIO[39]
FFCTS/
ICOCZ
GPIO[35]
FFDCD/
ICOCZ
GPIO[36]
FFDSR/
ICOCZ
GPIO[37]
FFRI/
ICOCZ
GPIO[38]
FFDTR/
ICOCZ
GPIO[40]
FFRTS/
ICOCZ
GPIO[41]
Bluetooth UART Pins
BTRXD/
ICOCZ
GPIO[42]
BTTXD/
ICOCZ
GPIO[43]
2-12
Signal Descriptions
LCD display data. (output) Transfers pixel information
from the LCD Controller to the external LCD panel.
3.6864 MHz clock. (output) Output from 3.6864 MHz
oscillator.
LCD display data. (output) Transfers pixel information
from the LCD Controller to the external LCD panel.
32 kHz clock. (output) Output from the 32 kHz oscillator.
LCD display data. (output) Transfers pixel information
from the LCD Controller to the external LCD panel.
Memory Controller grant. (output) Notifies an external
device it has been granted the system bus.
LCD frame clock. (output) Indicates the start of a new
frame. Also referred to as Vsync.
LCD line clock. (output) Indicates the start of a new line.
Also referred to as Hsync.
LCD pixel clock. (output) Clocks valid pixel data into the
LCD's line shift buffer.
AC bias drive. (output) Notifies the panel to change the
polarity for some passive LCD panel. For TFT panels,
this signal indicates valid pixel data.
Full Function UART Receive. (input)
MMC chip select 0. (output) Chip select 0 for the MMC
Controller.
Full Function UART Transmit. (output)
MMC chip select 1. (output) Chip select 1 for the MMC
Controller.
Full Function UART Clear-to-Send. (input)
Full Function UART Data-Carrier-Detect. (input)
Full Function UART Data-Set-Ready. (input)
Full Function UART Ring Indicator. (input)
Full Function UART Data-Terminal-Ready. (output)
Full Function UART Request-to-Send. (output)
Bluetooth UART Receive. (input)
Bluetooth UART Transmit. (output)
Reset State
Pulled High -
Note[1]
Pulled High -
Note[1]
Pulled High -
Note[1]
Pulled High -
Note[1]
Pulled High -
Note[1]
Pulled High -
Note[1]
Pulled High -
Note[1]
Pulled High -
Note[1]
Pulled High -
Note[1]
Pulled High -
Note[1]
Pulled High -
Note[1]
Pulled High -
Note[1]
Pulled High -
Note[1]
Pulled High -
Note[1]
Pulled High -
Note[1]
Pulled High -
Note[1]
Pulled High -
Note[1]
Intel® PXA255 Processor Developer's Manual
Sleep State
Note [3]
Note [3]
Note [3]
Note [3]
Note [3]
Note [3]
Note [3]
Note [3]
Note [3]
Note [3]
Note [3]
Note [3]
Note [3]
Note [3]
Note [3]
Note [3]
Note [3]