MTV230M 查看數據表（PDF） - Myson Century Inc

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MTV230M

8051 Embedded LCD Monitor Controller with Flash OSD

Myson Century Inc 

MYSON

TECHNOLOGY

MTV230M

(Rev 1.0)

mode.

Command Write

S-tttttt10k-cccccxxBk-AAAAAAAAk-P

Command Read

S-tttttt11k-cccccXXBK-AAAAAAAAK-aaaaaaaaK-RRRRRRRRK-rrrrrrrrK-P

Data Write

S-tttttt00k-aaaaaaaak-ddddddddk-ddddddddk- ... –ddddddddk-ddddddddk-P

Data Read

S-tttttt00k-aaaaaaaak-(P)-

S-tttttt01k-ddddddddK-ddddddddK- ... –ddddddddK-ddddddddK-P

where

S = start or re-start

P = stop

K = ack by host (0 or 1)

k = ack by slave

tttttt = ISP slave address

ccccc = command

B = OSD/Code select (1=OSD)

x = don’t care

X = not defined

AAAAAAAA = Code_address[15:8]

aaaaaaaa = Code_address[7:0]

AAAAAAA = OSD_address[13:7]

aaaaaaa = OSD_address[6:0]

RRRRRRRR = CRC_register[15:8]

rrrrrrrr = CRC_register[7:0]

dddddddd-dddddddd = Code_data

dddd-dddddddd = OSD_data

ccccc = 10100 → Program

ccccc = 00110 → Page Erase 512 bytes or 256 words (Erase)

ccccc = 01101 → Erase entire Flash (Blank)

ccccc = 11010 → Clear CRC_register (Clr_CRC)

ccccc = 01001 → Reset MTV230M (Reset_CPU)

10.1 ISP Command Write

The 2nd byte of “Command Write” can define the operating mode of MTV230M in its “Data write” stage,

clear CRC register, or reset MTV230M. The bit 0 of 2nd byte selects the target Flash to be operated (1=OSD,

0=Code). The 3rd byte of Command Write defines the page address (A15-8 of Code Flash, A13-7 of OSD

Flash). A Command Write may consist of 1,2 or 3 bytes.

10.2 ISP Command Read

The 2nd byte echoes the current command in ISP slave. The 3rd and 4th byte reflect the current Flash address.

The 5th and 6th byte report the CRC result. A Command Read may consist of 2,3,4,5 or 6 bytes.

10.3 ISP Data Write

The 2nd byte defines the low address of Flash (A7-0 for Code, A6-0 for OSD). After receiving the 3rd byte, the

MTV230M will execute a Program/Erase/Blank command depending on the preceding “Command Write”. If

Code area is selected, the low address of Code Flash will increase every time when ISP slave acknowledges

the data byte. If OSD Flash is selected, the low address of OSD Flash will increase when every 2 data bytes

are received. The Blank/Erase command needs one data byte (content is “don’t care”). The executing time is

10mS. During the 10mS period, the ISP slave does not accept any command/data and returns non-ack to

any IIC bus activity. The Program command may have 1-256 data bytes for Code Flash, and have 1-128

word(256 bytes) for OSD Flash. The program cycle time is 60us. If the ISP slave is not able to complete the

program cycle in time, it will return non-ack to the following data byte. In the meantime, the low address does

not increase and the CRC does not count the non-acked data byte. A Data Write may consist of 1,2 or more

bytes.

Data Write (Blank/Erase)

S-tttttt00k-aaaaaaaak-ddddddddk-P ... S-ttttttxxk-

|----Min. 10mS----|

Data Write (Program)

Revision 1.0

- 17 -

2000/11/15

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