CDC3205G-C Micronas, CDC3205G-C Datasheet - Page 149
CDC3205G-C
Manufacturer Part Number
CDC3205G-C
Description
Automotive Controller Family The Device is a Microcontroller For Use in Automotive Applications.the On-chip Cpu is an Arm Processor ARM7TDMI with 32-bit Data And Address Bus, Which Supports Thumb format Instructions.
Manufacturer
Micronas
Datasheet
1.CDC3205G-C.pdf
(260 pages)
- Current page: 149 of 260
- Download datasheet (3Mb)
PRELIMINARY DATA SHEET
23. Graphic Bus Interface
The Graphic Bus Interface (GB) is intended to support the
operation of external LCD driver ICs (e.g. SED1560 by
Epson).
23.1. Functions
The DMA module copies 8bit pixel data bytes by direct mem-
ory access (DMA) to the external IC’s graphic RAM with help
of that IC’s internal autoincrement address counter, and with-
out CPU interaction. Other off-chip registers, allowing control
of the display behavior (blinking, scrolling, etc.), have to be
written and read by CPU operations.
Fig. 23–1:
The necessary timing is done autonomously by the GB logic.
Any U-Port may be used as address output port operated by
23.2. GB Registers
A write access to this register generates the DACK signal
and writes to registers UxD. A read access to this register
generates the DACK signal and reads from registers UxPIN.
Micronas
fIO
D
wr GD
rd GD
DACKx
DINTx
DREQx
nRW
r/w
GD
7
Port Bus Block Diagram
6
Graphic Bus Data Register
5
Interface
Graphic
Bus
4
Data
0x00
3
2
GOEQ
GWEQ
GD0 to7
1
June 12, 2003; 6251-579-1PD
0
0
Res
Offs
Features
– DMA read/write to external device
– CPU read/write to external device
– Read/write timing generation
– Read/write control signals generation
the CPU. Please refer to section DMA for information about
GB DMA interaction.
The register GD provides the data interface for the GB. Writ-
ing to GD outputs the data byte at U5.0 to U5.3 (low nibble)
and U7.4 to U7.7 (high nibble). Reading from GD inputs a
data byte from above pins. The assignment to external sig-
nals is shown in table 23–1.
Table 23–1:
TIM
w15-1:
w0:
r/w
Port
U5.0
:
U7.7
U6.2
U6.1
1) Any U-Port may be used as address output port.
GC
1)
7
Name
GDB0
:
GDB7
GADB
GWEQ
GOEQ
6
GB Timer
GB timing, equation:
GB logic is disabled, clock input is disabled
Port Assignment
TIM
Graphic Bus Control Register
5
t
GB
=
4
2
----------------- -
External data bus
External address bus
External write signal
External read signal
0x00
TIM
f
IO
CDC 32xxG-C
E
3
+
1
BSY
2
SEQ
1
DTA
0
0
Res
147
Offs
Related parts for CDC3205G-C
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
Scan rate converter using embedded DRAM technology unit
Manufacturer:
Micronas
Datasheet:
Part Number:
Description:
Video pixel decoder
Manufacturer:
Micronas
Datasheet:
Part Number:
Description:
Stereo audio DAC
Manufacturer:
Micronas
Datasheet:
Part Number:
Description:
Multistandard sound processor
Manufacturer:
Micronas
Datasheet:
Part Number:
Description:
VAD2150_Micronas.pdf
Manufacturer:
Micronas
Datasheet:
Part Number:
Description:
VPS/PDC- plus decoder
Manufacturer:
Micronas
Datasheet:
Part Number:
Description:
Teletext decoder with embedded 16-bit controller M2
Manufacturer:
Micronas
Datasheet:
Part Number:
Description:
High-end picture-in-picture ICs
Manufacturer:
Micronas
Datasheet:
Part Number:
Description:
Cost-effective picture-in-picture ICs
Manufacturer:
Micronas
Datasheet:
Part Number:
Description:
Cost-effective picture-in-picture ICs
Manufacturer:
Micronas
Datasheet:
Part Number:
Description:
Teletext Decoder with Embedded 16-bit Controller
Manufacturer:
Micronas
Datasheet:
Part Number:
Description:
Octal 8-Bit Trimmer, IC
Manufacturer:
Micronas
Datasheet:
Part Number:
Description:
Video Pixel Decoder
Manufacturer:
Micronas
Datasheet: