UPD6708 datasheet(41/72 Pages) NEC

41 / 72 page

µPD6708

(2)

Slave transmission

After execution of the SETSD command, the order of generation of slave transmission return codes is as shown in Figure

6-2.

Figure 6-2. Return Code Generation Order in Slave Transmission

The minimum generation intervals for return codes in slave transmission are shown below.

Table 6-6. Minimum Generation Intervals for Return Codes in Slave Transmission (

µs)

Time

Mode 0

Mode 1

Mode 2

Approx. 1580

Approx. 400

Approx. 290

Approx. 10

Approx. 7290

Approx. 2050

Approx. 1550

(3)

Master reception

After execution of the MREQ1 or MREQ2 command, the order of generation of master reception returns codes is as shown

in Figure 6-3.

Figure 6-3. Return Code Generation Order in Master Reception

The minimum generation intervals for return codes in master transmission are shown below.

Master Reception

Start

(Return Code

: 0100)

Master Receive

Buffer Full

(Return Code : 0101)

New communication

return codes

• Slave reception start

(Return code : 1000)

• Broadcast reception

start

(Return code : 1100)

etc.

Termination During

Master Reception

(Return Code

: 0111)

Master Reception

Normal Termination

(Return Code : 0110)

Termination During

Master Reception

(Return Code : 0111)

Master Receive

Buffer Full

(Return Code : 0101)

Master Reception

Normal Termination

(Return Code : 0110)

Termination During

Master Reception

(Return Code : 0111)

Transmission Start

(Return Code : 0000)

Transmission

Normal Termination

(Return Code : 0010)

Termination During

Transmission

(Return Code : 0011)

New communication return codes

• Slave reception start

(Return code : 1000)

• Broadcast reception start

(Return code : 1100)

etc.

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