TTP259
TonTouchTM
Preliminary
2) Fast read mode
Master read data fast in fast read mode, to reduce CPU process time.
Follow shows a flowchart of IIC device program state machine in fast read
mode. When master read the first data, IIC device automatically load next
data to the sent buffer and generates an interrupt allows users to update
new IICRDAT(L/H)0 and IICRDAT(L/H)1 data.
1. For two byte data:
IIC INITIAL
SET IICMOD=1
NEW DATA
SET ADR[0..2]
UPDTAE
WRITE
IICRDAT(L/H)0
and
NO
CHECK
MBB=0
IICRDAT(L/H)1
YES
WRITE
IICRDAT(L/H)0~1
(TWO BYTE NEW
DATA)
SET IICEN=1
RTS
RTS
2015/05/25
Page 47 of 81
Ver: 1.1
TTELEC [ TT Electronics ]
