Intel PXA255 - Manual (Page 42)

2-12 Intel® PXA255 Processor Developer’s Manual
System Architecture
L_DD[13]/
GPIO[71]
ICOCZ
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.
Hi-Z - Note [1] Note [3]
L_DD[14]/
GPIO[72]
ICOCZ
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.
Hi-Z - Note [1] Note [3]
L_DD[15]/
GPIO[73]
ICOCZ
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.
Hi-Z - Note [1] Note [3]
L FCLK/
GPIO[74]
ICOCZ
LCD frame clock. (output) Indicates the start of a new
frame. Also referred to as Vsync.
Hi-Z - Note [1] Note [3]
L LCLK/
GPIO[75]
ICOCZ
LCD line clock. (output) Indicates the start of a new line.
Also referred to as Hsync.
Hi-Z - Note [1] Note [3]
L PCLK/
GPIO[76]
ICOCZ
LCD pixel clock. (output) Clocks valid pixel data into the
LCD’s line shift buffer.
Hi-Z - Note [1] Note [3]
L BIAS/
GPIO[77]
ICOCZ
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.
Hi-Z - Note [1] Note [3]
Full Function UART Pins
FFRXD/
GPIO[34]
ICOCZ
Full Function UART Receive. (input)
MMC chip select 0. (output) Chip select 0 for the MMC
Controller. Hi-Z - Note [1] Note [3]
FFTXD/
GPIO[39]
ICOCZ
Full Function UART Transmit. (output)
MMC chip select 1. (output) Chip select 1 for the MMC
Controller. Hi-Z - Note [1] Note [3]
FFCTS/
GPIO[35]
ICOCZ Full Function UART Clear-to-Send. (input) Hi-Z - Note [1] Note [3]
FFDCD/
GPIO[36]
ICOCZ Full Function UART Data-Carrier-Detect. (input) Hi-Z - Note [1] Note [3]
FFDSR/
GPIO[37]
ICOCZ Full Function UART Data-Set-Ready. (input) Hi-Z - Note [1] Note [3]
FFRI/
GPIO[38]
ICOCZ Full Function UART Ring Indicator. (input) Hi-Z - Note [1] Note [3]
FFDTR/
GPIO[40]
ICOCZ Full Function UART Data-Terminal-Ready. (output) Hi-Z - Note [1] Note [3]
FFRTS/
GPIO[41]
ICOCZ Full Function UART Request-to-Send. (output) Hi-Z - Note [1] Note [3]
Bluetooth UART Pins
BTRXD/
GPIO[42]
ICOCZ Bluetooth UART Receive. (input) Hi-Z - Note [1] Note [3]
BTTXD/
GPIO[43]
ICOCZ Bluetooth UART Transmit. (output) Hi-Z - Note [1] Note [3]
Table 2-6. Pin & Signal Descriptions for the PXA255 Processor (Sheet 4 of 9)
Pin Name Type Signal Descriptions Reset State Sleep State