Power and Clocking

Table 8-6. PXA250 and PXA210 VCCN vs. VCCQ (Sheet 5 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

 

 

 

 

 

 

 

 

 

 

 

GP40

 

1

 

 

 

DTR

FFUART data terminal Ready

VCCQ

 

 

 

 

 

 

 

 

 

GP41

 

1

 

 

 

RTS

FFUART request to send

VCCQ

 

 

 

 

 

 

 

 

 

GP42

 

1

BTRXD

 

 

 

BTUART receive data

VCCQ

 

 

 

 

 

 

 

 

 

GP43

 

1

 

 

 

BTTXD

BTUART transmit data

VCCQ

 

 

 

 

 

 

 

 

 

GP44

 

1

CTS

 

 

 

BTUART clear to send

VCCQ

 

 

 

 

 

 

 

 

 

GP45

 

1

 

 

 

RTS

BTUART request to send

VCCQ

 

 

 

 

 

 

 

 

 

GP46

 

1

ICP_RXD

 

 

 

ICP receive data

VCCQ

 

 

 

 

 

 

 

 

RXD

 

 

STD_UART receive data

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

GP47

 

1

 

 

TXD

 

STD_UART transmit data

VCCQ

 

 

 

 

 

 

 

 

 

 

ICP_TXD

ICP transmit data

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

GP58

 

1

 

 

 

LDD[0]

LCD data pin 0

VCCQ

 

 

 

 

 

 

 

 

 

GP59

 

1

 

 

 

LDD[1]

LCD data pin 1

VCCQ

 

 

 

 

 

 

 

 

 

GP60

 

1

 

 

 

LDD[2]

LCD data pin 2

VCCQ

 

 

 

 

 

 

 

 

 

GP61

 

1

 

 

 

LDD[3]

LCD data pin 3

VCCQ

 

 

 

 

 

 

 

 

 

GP62

 

1

 

 

 

LDD[4]

LCD data pin 4

VCCQ

 

 

 

 

 

 

 

 

 

GP63

 

1

 

 

 

LDD[5]

LCD data pin 5

VCCQ

 

 

 

 

 

 

 

 

 

GP64

 

1

 

 

 

LDD[6]

LCD data pin 6

VCCQ

 

 

 

 

 

 

 

 

 

GP65

 

1

 

 

 

LDD[7]

LCD data pin 7

VCCQ

 

 

 

 

 

 

 

 

 

GP66

 

1

 

 

 

LDD[8]

LCD data pin 8

VCCQ

 

 

 

 

 

 

 

MBREQ

 

 

 

Alternate Bus Master Request

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

GP67

 

1

 

 

 

LDD[9]

LCD data pin 9

VCCQ

 

 

 

 

 

 

 

 

 

MMCCS0

 

MMC Chip Select 0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

GP68

 

1

 

 

MMCCS1

 

MMC Chip Select 1

VCCQ

 

 

 

 

 

 

 

 

 

 

LDD[10]

LCD data pin 10

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

GP69

 

1

 

 

MMCCLK

 

MMC_CLK

VCCQ

 

 

 

 

 

 

 

 

 

 

LDD[11]

LCD data pin 11

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

GP70

 

1

 

 

RTCCLK

 

Real Time clock (1Hz)

VCCQ

 

 

 

 

 

 

 

 

 

 

LDD[12]

LCD data pin 12

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

GP71

 

1

 

 

3.6 MHz

 

3.6MHz Oscillator clock

VCCQ

 

 

 

 

 

 

 

 

 

 

LDD[13]

LCD data pin 13

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

GP72

 

1

 

 

32 KHz

 

32 KHz clock

VCCQ

 

 

 

 

 

 

 

 

 

 

LDD[14]

LCD data pin 14

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

8-10

PXA250 and PXA210 Applications Processors Design Guide

Page 78
Image 78
Intel manual PXA250 and PXA210 Vccn vs. Vccq Sheet 5

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.