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For a full description of capabilities and details of registers, please refer to the Freescale i.MX25 Reference Manual.

Where you see Pad/Pin in the following tables, this refers to:

  • Pad: Pad number for the surface mount version of Topaz
  • Pin: Pin number on the SO-DIMM version of Topaz

 

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_Toc318964149
_Toc318964149
LCD Controller

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The following signals are used by the standard LCD controller.

Pad/Pin

Voltage

Signal Name

Description

Notes

E2/50

3.3V

CONTRAST

Contrast output

 

L1/25

3.3V

LD0

Data signal

 

L2/26

3.3V

LD1

Data signal

 

L3/27

3.3V

LD2

Data signal

 

K1/28

3.3V

LD3

Data signal

 

K2/29

3.3V

LD4

Data signal

 

K3/30

3.3V

LD5

Data signal

 

J1/31

3.3V

LD6

Data signal

 

J2/32

3.3V

LD7

Data signal

 

J3/33

3.3V

LD8

Data signal

 

H1/34

3.3V

LD9

Data signal

 

H2/35

3.3V

LD10

Data signal

 

H3/36

3.3V

LD11

Data signal

 

G1/37

3.3V

LD12

Data signal

 

G2/38

3.3V

LD13

Data signal

 

G3/39

3.3V

LD14

Data signal

 

F1/40

3.3V

LD15

Data signal

 

F2/49

3.3V

LSCLK

Pixel Clock

 

F3/51

3.3V

OE_ACD

Output enable

 

K4/53

3.3V

VSYNC

Vertical Sync

 

L4/52

3.3V

HSYNC

Horizontal Sync

 

U1/164

3.3V

LD16

Data Signal

Also on B3 (3.3V) and A12 (1.8V)

Y8/165

3.3V

LD17

Data Signal

Also on A11 (1.8V)

A13/193

1.8V

LD18

Data Signal

Voltage level converter required

A14/194

1.8V

LD19

Data Signal

Voltage level converter required

A15/195

1.8V

LD20

Data Signal

Voltage level converter required

A16/196

1.8V

LD21

Data Signal

Voltage level converter required

F16/197

1.8V

LD22

Data Signal

Voltage level converter required

F15/198

1.8V

LD23

Data Signal

Voltage level converter required

C1/8

3.3V

CLS

Special timing signal for Sharp TFT

 

C2/9

3.3V

SPL

Special timing signal for Sharp TFT

 

D2/10

3.3V

PS

Special timing signal for Sharp TFT

 

D1/11

3.3V

REV

Special timing signal for Sharp TFT

 

The following signals are used by the Smart LCD controller (SLCD)

Pad/Pin

Voltage

Signal Name

Description

Notes

E2/50

3.3V

CONTRAST

Contrast output

 

L1/25

3.3V

DATA_0

Data signal

 

L2/26

3.3V

DATA_1

Data signal

 

L3/27

3.3V

DATA_2

Data signal

 

K1/28

3.3V

DATA_3

Data signal

 

K2/29

3.3V

DATA_4

Data signal

 

K3/30

3.3V

DATA_5

Data signal

 

J1/31

3.3V

DATA_6

Data signal

 

J2/32

3.3V

DATA_7

Data signal

 

J3/33

3.3V

DATA_8

Data signal

 

H1/34

3.3V

DATA_9

Data signal

 

H2/35

3.3V

DATA_10

Data signal

 

H3/36

3.3V

DATA_11

Data signal

 

G1/37

3.3V

DATA_12

Data signal

 

G2/38

3.3V

DATA_13

Data signal

 

G3/39

3.3V

DATA_14

Data signal

 

F1/40

3.3V

DATA_15

Data signal

 

F2/49

3.3V

LCD_CS

Used as a chip select for external display controller in serial mode. In parallel mode, used as write strobe for the external display controller. This signal polarity is programmable.

 

F3/51

3.3V

LCD_RS

LCD Register Select signal that indicates to the LCD device whether data being written is display data or control data. This signal polarity is programmable.

 

 

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_Toc318964150
_Toc318964150
Touch Screen Controller (TSC) and Analog-to-Digital Converter (ADC)

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Pad/Pin

Voltage

Signal Name

Description

Notes

AUD3

 

 

 

 

J3/33

3.3V

TXD

Transmit data

 

H1/34

3.3V

RXD

Receive data

 

H2/35

3.3V

TXC

Transmit clock

 

G3/39

3.3V

RXC

Receive clock

 

H3/36

3.3V

TXFS

Transmit frame

 

F1/40

3.3V

RXFS

Receive frame

 

AUD4

 

 

 

 

G18/178

1.8V

TXD

Transmit data

 

M15/179

1.8V

RXD

Receive data

 

N14/180

1.8V

TXC

Transmit clock

 

 

 

RXC

Receive clock

Not present on the Topaz interface

H19/187

1.8V

TXFS

Transmit frame

 

H18/184

1.8V

RXFS

Receive frame

 

AUD5

 

 

 

 

A9/87

3.3V

TXD

Transmit data

 

B8/88

3.3V

RXD

Receive data

 

B7/89

3.3V

TXC

Transmit clock

 

A7/85

3.3V

RXC

Receive clock

 

B6/90

3.3V

TXFS

Transmit frame

 

A6/86

3.3V

RXFS

Receive frame

 

AUD6

 

 

 

 

V14/111

3.3V

TXD

Transmit data

 

Y15/110

3.3V

RXD

Receive data

 

V16/109

3.3V

TXC

Transmit clock

 

V17/107

3.3V

RXC

Receive clock

 

V15/112

3.3V

TXFS

Transmit frame

 

Y16/108

3.3V

RXFS

Receive frame

 

AUD7

 

 

 

 

U1/164

3.3V

TXD

Transmit data

 

T16/94

3.3V

RXD

Receive data

Also on V2

Y8/165

3.3V

TXC

Transmit clock

 

R16/95

3.3V

RXC

Receive clock

 

U16/93

3.3V

TXFS

Transmit frame

 

P16/96

3.3V

RXFS

Receive frame

 

 

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_Toc318964159
_Toc318964159
CMOS Sensor Interface (CSI)

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Pad/Pin

Voltage

Signal Name

Description

Notes

V14/111

3.3V

MCLK

Sensor Master Clock

 

V15/112

3.3V

PIXCLK

Pixel Clock

 

Y15/110

3.3V

VSYNC

Vertical Sync (Start Of Frame)

 

V16/109

3.3V

HSYNC

Horizontal Sync ( Blank Signal)

 

V19/101

3.3V

D2

Data signal

 

U19/102

3.3V

D3

Data signal

 

T19/103

3.3V

D4

Data signal

 

Y18/104

3.3V

D5

Data signal

 

V18/105

3.3V

D6

Data signal

 

Y17/106

3.3V

D7

Data signal

 

V17/107

3.3V

D8

Data signal

 

Y16/108

3.3V

D9

Data signal

 

D2/10

3.3V

D0

Data signal

Also on L1

D1/11

3.3V

D1

Data signal

Also on L2

J2/32

3.3V

D10

Data signal

 

J1/31

3.3V

D11

Data signal

 

K3/30

3.3V

D12

Data signal

 

K2/29

3.3V

D13

Data signal

 

K1/28

3.3V

D14

Data signal

 

L3/27

3.3V

D15

Data signal

 

 

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_Toc318964160
_Toc318964160
Keypad Port (KPP)

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Pad/Pin

Voltage

Signal Name

Description

Notes

EPIT1

 

 

 

 

Y8/165

3.3V

EPITO

Output pin for indication of occurrence of output compare event through a specified transition.

Also on Y6

EPIT2

 

 

 

 

J4/14

3.3V

EPITO

Output pin for indication of occurrence of output compare event through a specified transition.

 

 

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_Toc318964163
_Toc318964163
Pulse-Width Modulator (PWM)

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Pad/Pin

Voltage

Signal Name

Description

Notes

M3/74

3.3V

LINE

1-wire signal

 

 

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_Toc318964165
_Toc318964165
Watchdog (WDOG)

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Pad/Pin

Voltage

Signal Name

Description

Notes

E2/50

3.3V

WDOG_B

This signal powers down the module. Refer to the i.MX25 Reference Manual for further detail.

Also on U2

 

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_Toc318964166
_Toc318964166
Subscriber Identification Module (SIM)

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