參數(shù)資料
型號: LZ85194
廠商: Sharp Corporation
英文描述: IrDA Control Peripheral Engine(IrDA 控制外圍處理器)
中文描述: 紅外線控制周邊引擎(紅外線控制外圍處理器)
文件頁數(shù): 13/76頁
文件大?。?/td> 256K
代理商: LZ85194
LZ85194
IrDA Control Peripheral Engine User
s Guide
7
Figure 6 shows the serial interface timing (example case: μP sends data, the data length
is Length = 2, by the Send_Data_withAck Command) in issuing Commands. Figure 7
shows the timing for SCK, SI and SO.
1. Wait for RDY to be RDY = H.
2. The μP will set CMD to CMD = H prior to issuing the Command.
3. Change SCK to H
L
H, and output Command ID (Send_Data_withAck) to SI. After
Command ID output, fix SCK to SCK = H.
4. Wait for RDY to be RDY = H, and then set CMD to CMD = L.
5. Change SCK to H
L
H, and output command data length of Send_Data_withAck
Command length (Length) to SI. After the output, fix SCK to SCK = H.
6. Wait for RDY to be RDY = H.
7. Change SCK to H
L
H, and output data (Data) to SI. After the output, fix SCK to SCK = H.
8. When RDY then becomes RDY = H, change SCK to H
L
H, and read out the hand-
shake (ACK) from SO.
Figure 6. Serial Interface Operating Timing (Commands)
Figure 7. Timing for SCK, SDI, and SDO
Send_Data_with Ack
LENGTH
DATA
CMD
MSG
SCK
RDY
SI
SO
ACK
LZ85194-6
D7
D6
D7
D6
SCK
SI
SO
D5
D4
μ
P OUTPUT
TIMING FOR
PE TO LATCH SI
PE OUTPUT
D3
D2
D1
D0
D5
INVALID DATA
LZ85194-7
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