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4.32 Command Mode

Command Mode message is defined as shown in next table.

Table 24. MOSI Command Mode Message Definition

Odd parity check includes all 16 bits. "Don't care" bit is included in the parity check as well.

Bit D7 to bit D0 is used to start the deployment or the pulse stretch timer. OSD provides an independent

timer for each channel. When any of these bits are set to '1,' OSD starts the deployment of the pulse

stretch timer for the respective channels. If any of these bits are set to '0' when the pulse stretch timer is

still active, OSD terminates the pulse stretch timer for the respective channels. Once deployment is initi-

ated it will not be terminated. During the deployment, OSD will ignore all commands.

When DEPEN is negated, OSD ignores the deploy command. In other words, OSD will not initiate the

pulse stretch timer or a deployment in this condition. However, when the pulse stretcher is already started

by a deploy command, DEPEN will not terminate the pulse stretch timer. Upon receiving an idle command,

OSD will terminates the pulse stretch timer regardless of DEPEN signal. In this case, only a pulse stretch

timer that is started by a deploy command that can be terminated by sending an idle command.

Bit

State

Description

D15

0

Mode Bits

D14

1

D13

Odd Parity

D12

-

Don’t Care

D11

-

Don’t Care

D10

-

Don’t Care

D9

-

Don’t Care

D8

-

Don’t Care

D7

0

Channel 7 Idle

1

Deploy Channel 7

D6

0

Channel 6 Idle

1

Deploy Channel 6

D5

0

Channel 5 Idle

1

Deploy Channel 5

D4

0

Channel 4 Idle

1

Deploy Channel 4

D3

0

Channel 3 Idle

1

Deploy Channel 3

D2

0

Channel 2 Idle

1

Deploy Channel 2

D1

0

Channel 1 Idle

1

Deploy Channel 1

D0

0

Channel 0 Idle

1

Deploy Channel 0

Obsolete

Product(s)

- Obsolete

Product(s)