Power and Clocking

Table 8-6. PXA250 and PXA210 VCCN vs. VCCQ (Sheet 4 of 6)

 

Pin

Pin

Alt_fn

Alt_fn

Alt_fn

Alt_fn

Signal Description and

Power

 

Count

1-(in)

2-(in)

1-(out)

2-(out)

Comments

Supply

 

 

 

 

 

 

 

 

 

 

 

GP11

 

1

 

 

3.6 MHz

 

3.6 MHz oscillator out

VCCQ

 

 

 

 

 

 

 

 

 

GP12

 

1

 

 

32 KHz

 

32 KHz out

VCCQ

 

 

 

 

 

 

 

 

 

GP13

 

1

 

 

 

MBGNT

memory controller grant

VCCQ

 

 

 

 

 

 

 

 

 

GP14

 

1

MBREQ

 

 

 

Alternate Bus Master Request

VCCQ

 

 

 

 

 

 

 

 

 

GP16

 

1

 

 

 

PWM0

PWM0 output

VCCQ

 

 

 

 

 

 

 

 

 

GP17

 

1

 

 

 

PWM1

PWM1 output

VCCQ

 

 

 

 

 

 

 

 

 

GP23

 

1

 

 

 

SCLK

SSP clock

VCCQ

 

 

 

 

 

 

 

 

 

GP24

 

1

 

 

 

SFRM

SSP Frame

VCCQ

 

 

 

 

 

 

 

 

 

GP25

 

1

 

 

 

TXD

SSP transmit

VCCQ

 

 

 

 

 

 

 

 

 

GP26

 

1

RXD

 

 

 

SSP receive

VCCQ

 

 

 

 

 

 

 

 

 

GP27

 

1

EXTCLK

 

 

 

SSP ext_clk

VCCQ

 

 

 

 

 

 

 

 

 

 

 

 

BITCLK

 

 

 

AC97 bit_clk

 

 

 

 

 

 

 

 

 

 

GP28

 

1

 

BITCLK

 

 

I2S bit_clk

VCCQ

 

 

 

 

 

 

 

 

 

BITCLK

 

I2S bit_clk

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BITCLK

AC97 bit_clk

 

 

 

 

 

 

 

 

 

 

 

 

 

SDATA_IN0

 

 

 

AC97 Sdata_in0

 

GP29

 

1

 

 

 

 

 

VCCQ

 

 

SDATA_

 

 

I2S Sdata_in

 

 

 

 

 

 

 

 

 

 

 

IN

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SDATA_

 

I2S Sdata_out

 

 

 

 

 

 

OUT

 

 

GP30

 

1

 

 

 

 

VCCQ

 

 

 

 

 

 

 

 

 

 

SDATA_

AC97 Sdata_out

 

 

 

 

 

 

 

 

 

 

 

 

 

OUT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

GP31

 

1

 

 

SYNC

 

I2S sync

VCCQ

 

 

 

 

 

 

 

 

 

 

SYNC

AC97 sync

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

GP32

 

1

 

 

SYSCLK

 

I2S sysclk

VCCQ

 

 

 

 

 

 

 

SDATA_IN1

 

 

 

AC97 Sdata_in1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

GP34

 

1

FFRXD

 

 

 

FFUART receive

VCCQ

 

 

 

 

 

 

 

 

 

 

MMCCS0

MMC Chip Select 0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

GP35

 

1

CTS

 

 

 

FFUART Clear to send

VCCQ

 

 

 

 

 

 

 

 

 

GP36

 

1

DCD

 

 

 

FFUART Data carrier detect

VCCQ

 

 

 

 

 

 

 

 

 

GP37

 

1

DSR

 

 

 

FFUART data set ready

VCCQ

 

 

 

 

 

 

 

 

 

GP38

 

1

RI

 

 

 

FFUART Ring Indicator

VCCQ

 

 

 

 

 

 

 

 

 

GP39

 

1

 

 

MMCCS1

 

MMC Chip Select 1

VCCQ

 

 

 

 

 

 

 

 

 

 

FFTXD

FFUART transmit data

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PXA250 and PXA210 Applications Processors Design Guide

8-9

Page 77
Image 77
Intel manual PXA250 and PXA210 Vccn vs. Vccq Sheet 4

PXA250 and PXA210 specifications

The Intel PXA250 and PXA210 processors, part of the Intel XScale architecture, were introduced in the early 2000s, targeting mobile and embedded applications. They are known for their low power consumption, high performance, and advanced multimedia capabilities, making them suitable for a wide range of devices, including PDAs, smartphones, and other portable computing devices.

The PXA250, which operates at clock speeds ranging from 400 MHz to 624 MHz, features a superscalar architecture that allows it to issue multiple instructions per clock cycle. This enhances the overall performance for demanding applications while maintaining low power usage. It supports a variety of peripheral interfaces, including USB, Ethernet, and various memory types, which contributes to its versatility in different product designs.

One of the key technologies in the PXA250 is the integrated Intel Smart Repeat Technology, which optimizes data processing, thereby reducing the amount of power consumed during operation. This feature is particularly important for battery-powered devices, as it extends the overall battery life, allowing for longer usage times in mobile environments. Additionally, the PXA250 includes a dedicated graphics acceleration unit, which enables enhanced graphics and multimedia performance suited to modern applications at the time.

In contrast, the PXA210 is a more entry-level processor, aimed at cost-sensitive applications. Operating at lower clock speeds, typically around 200 MHz to 400 MHz, it forgoes some of the advanced performance features of the PXA250 while still offering a good balance of performance and power efficiency. The PXA210 is less complex, making it suitable for simpler devices that do not require the extensive capabilities of the PXA250.

Both processors utilize the Intel XScale architecture, which is based on the ARM instruction set. They are built on a 0.13-micron process technology, enabling higher density and lower power consumption compared to their predecessors. With integrated memory controllers and bus interfaces, they facilitate efficient data handling and connectivity options.

In summary, both the Intel PXA250 and PXA210 processors played a crucial role in the evolution of mobile computing by providing powerful processing capabilities with energy efficiency. Their features and technologies enabled device manufacturers to create innovative products that catered to the growing demand for portable devices during that era.