SC2200 datasheet(60/433 Pages) NSC

60 / 433 page

www.national.com

Revision 3.0

Signal Definitions (Continued)

SETRES

B15

Set Resistor. This signal sets the current

level for the RED/GREEN/BLUE analog out-

puts. Typically, a 464

Ω,1% resistor is con-

nected between this ball and AVSSCRT.

---

On-Chip RAMDAC

RED

B12

Analog Red, Green and Blue

---

GREEN

A14

---

BLUE

A15

---

TFT (External DAC) Interface

TFTDCK

A22

AA1

TFT Clock. Clock to external CRT DACs or

TFT.

IDE_RST#

A10

GPIO17+ IOCS0#

TFTDE

C16

TFT Data Enable. Can be used as blank sig-

nal to external CRT DACs.

IDE_CS1#

B18

ACK#+FPCICLK

FP_VDD_ON

B23

AB1

TFT Power Control. Used to enable power

to the Flat Panel display, with power

sequence timing.

IDE_DATA4

AL16

V30

GXCLK+TEST3

TFTD[17:0]

See

Table 2-3

on page

32.

See

Table 2-5

on page

47.

Digital RGB Data to TFT.

TFTD[5:0] - Connect to BLUE TFT inputs.

TFTD[11:6] - Connect to GREEN TFT inputs.

TFTD[17:12] - Connect to RED TFT inputs.

The TFT interface is

muxedwiththe IDE

interface or the Par-

allel Port. See Table

2-7 on page 52 and

Table 2-8 on page

54 for details.

2.4.5

ACCESS.bus Interface Signals

Signal Name

Ball No.

Type

Description

Mux

EBGA

TEPBGA

AB1C

AJ13

N31

I/O

ACCESS.bus 1 Serial Clock. This is the

serial clock for the interface.

Note:

If selected as AB1C function but not

used, tie AB1C high.

GPIO20+DOCCS#

AB1D

AL12

N30

I/O

ACCESS.bus 1 Serial Data. This is the bidi-

rectional serial data signal for the interface.

Note:

If AB1D function is selected but not

used, tie AB1D high.

GPIO1+IOCS1#

AB2C

AJ12

N29

I/O

ACCESS.bus 2 Serial Clock. This is the

serial clock for the interface.

Note:

If AB2C function is selected but not

used, tie AB2C high.

GPIO12

2.4.4

CRT/TFT Interface Signals (Continued)

Signal Name

Ball No.

Type

Description

Mux

EBGA

TEPBGA

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