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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)： | 36/76頁 |
| 文件大小： | 256K |
| 代理商： | LZ85194 |
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LZ85194
30
IrDA Control Peripheral Engine User
’
s Guide
Reference Document
IrDA Control Specification (Formerly IrBus) IrDA CIR (Control IR) Standard Final Spec-
ification, Final Revision 1.0, June 30,1998.
Universal Serial Bus Specification, Revision 1.0, January 15,1996.
Universal Serial Bus (USB) Device Class Definition for Human Interface devices (HID)
Firmware Specification Version 1.0, Final.
Appendix
Retry by Send_Data_withAck Command
Case examination for data transmission by DATA packet, from Unbound status to actual
data transmission through Bound status. The actual required time period, of which μP
sends Data by Send_Data_withAck and PE receives ACK from IrDA Control Host device
as a reply to this transmitted data, can be estimated as shown in Figure 12.
As shown in Figure 12, there may be the case that the actual data transmission can only take
place after time period of approximately 220 ms from the acceptance of Send_Data_withAck.
Thus, on the SS-Wire provided on PE, retrying Send_Data_withAck Command for over
220 ms time period enables user to transmit data correctly (see Figure 13).
Figure 12. Actual Required Time for Data Transmission While in Unbound Status
Send_Data_withAck
Acceptance
UNBOUND
BOUND
BLIND
WAKEUP
BINDING
PROCEDURE
Get_Status (3 CYCLES)
FOR POWER SUPPLY
VOLTAGE INQURY
DATA TRANSMISSION
(2 CYCLES)
IN DATA0/1 ACK
MEDIUM
SEARCH
(70 ms)
(13.8 +
12 ms)
(13.8 x 2 ms)
(13.8 x 3 ms)
(27.6 ms)
+
(approx. 540
μ
s)
85194-11
Figure 13. Retry by Send_Data_withAck
Send_Data
_WithAck
Send_Data
_WithAck
Send_Data
_WithAck
Send_Data
_WithAck
Send_Data
_WithAck
Send_Data
_WithAck
RETRY FOR
≥
220 ms
N
N
N
N
A
≥
13.8 ms
CMD
SI
SO
≥
13.8 ms
≥
13.8 ms
≥
13.8 ms
85194-12
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