MB86291A

6

Notes :

• The host interface transfers data signals at a fixed width of 32 bits.

• There are 23 lines for address signals handled in double words ( = 32 bits) and 32 Mbytes of address

space.

• The external bus can be used at an operating frequency of 100 MHz maximum.

• The RDY signal at the low level sets the ready state in the SH4 or V832 mode; the signal at the low level

sets the wait state in the SH3 mode. Note that the RDY signal is a tristate output.

• The host interface supports DMA transfer using an external DMA controller.

• The host interface generates a host processor interrupt signal.

• The RESET pin requires low level input of at least 300 µs after setting “S” (PLL reset signal) to high level.

• Fix the TEST signal at high level.

• In the V832 mode, connect the following pins as specified :

•••• Vide Output Interface

Notes :

• The video output interface contains an 8-bit D/A converter to output analog RGB signals. Also, the

eight-bit RGB digital output pins can connect an external digital video encoder.

• Using an additional external circuit, the video output interface can generate composite video signals.

• The video output interface can provide display synchronized with external video. The mode for

synchronization with the DCLKI signal can be selected as well as the mode for synchronization with a set

dot clock as for normal display.

SCARLET Pin Name

V832 Signal Name

A24

MWR

DTACK

TC

DRACK

DMAAK

Pin Name

Input/output

Function

DCLKO

Output

Display dot clock signal output

DCLKI

Input

Dot clock signal input

HSYNC

Input/output

Horizontal sync signal output

Horizontal sync signal input in external synchronization mode

VSYNC

Input/output

Vertical sync signal output

Vertical sync signal input in external synchronization mode

CSYNC

Output

Composite sync signal output

EO

Input

Even/odd-number field identification input

GV

Output

Graphics/video select signal

R0-R7

Output

Digital video (R) signal output

G0-G7

Output

Digital video (G) signal output

B0-B7

Output

Digital video (B) signal output

AOUTR

Analog output Analog video (R) signal output

AOUTG

Analog output Analog video (G) signal output

AOUTB

Analog output Analog video (B) signal output

VREF

Analog

Reference voltage input pin

ACOMPR

Analog

R-signal compensation pin

ACOMPG

Analog

G-signal compensation pin

ACOMPB

Analog

B-signal compensation pin

VRO

Analog

Reference current setting pin