beautypg.com

3 video port interface signals – AMD Geode SC2200 User Manual

Page 51

background image

AMD Geode™ SC2200 Processor Data Book

55

Signal Definitions

32580B

SDCLK_IN

AJ27

I

SDRAM Clock Input. The SC2200 samples the memory
read data on this clock. Works in conjunction with the
SDCLK_OUT signal.

---

SDCLK_OUT

AK28

O

SDRAM Clock Output. This output is routed back to
SDCLK_IN. The board designer should vary the length of
the board trace to control skew between SDCLK_IN and
SDCLK.

---

3.4.2

Memory Interface Signals (Continued)

Signal Name

Ball No.

Type

Description

Mux

3.4.3

Video Port Interface Signals

Signal Name

Ball No.

Type

Description

Mux

VPD7

G31

I

Video Port Data. The data is input from the CCIR-656
video decoder.

---

VPD6

H28

---

VPD5

H29

---

VPD4

H30

---

VPD3

H31

---

VPD2

J28

---

VPD1

J29

---

VPD0

J30

---

VPCKIN

F31

I

Video Port Clock Input. The clock input from the video
decoder.

---