|
M306H7MG-XXXFP Datasheet, PDF (104/329 Pages) Renesas Technology Corp – SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER with DATA ACQUISITION CONTROLLER | |||
|
◁ |
M306H7MG-XXXFP/MC-XXXFP/FGFP
10. SERIAL I/O
Table 10.3 lists the functions of the input/output pins during clock synchronous serial I/O mode. Table 10.3 shows
pin functions for the case where the multiple transfer clock output pin select function is deselected. Table 10.4 lists
the P64 pin functions during clock synchronous serial I/O mode. Note that for a period from when the UARTi
operation mode is selected to when transfer starts, the TxDi pin outputs an âHâ. (If the N-channel open-drain output
is selected, this pin is in a high-impedance state.)
Table 10.3 Pin Functions (When Not Select Multiple Transfer Clock Output Pin Function)
Pin name
Function
TxDi (i = 0 to 2) Serial data output
(P63, P67, P70)
RxDi
Serial data input
(P62, P66, P71)
CLKi
Transfer clock output
(P61, P65, P72)
Transfer clock input
Method of selection
(Outputs dummy data when performing reception only)
PD6 registerâs PD6_2 bit=0, PD6_6 bit=0, PD7 registerâs PD7_1 bit=0
(Can be used as an input port when performing transmission only)
UiMR registerâs CKDIR bit=0
UiMR registerâs CKDIR bit=1
PD6 registerâs PD6_1 bit=0, PD6_5 bit=0, PD7 registerâs PD7_2 bit=0
CTSi/RTSi
CTS input
(P60, P64, P73)
RTS output
UiC0 registerâs CRD bit=0
UiC0 registerâs CRS bit=0
PD6 registerâs PD6_0 bit=0, PD6_4 bit=0, PD7 registerâs PD7_3 bit=0
UiC0 registerâs CRD bit=0
UiC0 registerâs CRS bit=1
I/O port
UiC0 registerâs CRD bit=1
Table 10.4 P64 Pin Functions
Pin function
P64
CTS1
RTS1
CTS0(Note1)
CLKS1
U1C0 register
CRD CRS
1
0
0
0
1
0
0
Bit set value
UCON register
RCSP CLKMD1 CLKMD0
0
0
0
0
0
0
1
0
1(Note 2)
1
PD6 register
PD6_4
Input: 0, Output: 1
0
0
Note 1: In addition to this, set the U0C0 registerâs CRD bit to â0â (CTS0/RTS0 enabled) and the U0
C0 registerâs CRS bit to â1â (RTS0 selected).
Note 2: When the CLKMD1 bit = 1 and the CLKMD0 bit = 0, the following logic levels are output:
⢠High if the U1C0 registerâs CLKPOL bit = 0
⢠Low if the U1C0 registerâs CLKPOL bit = 1
Rev.2.10 Oct 25, 2006 Page 104 of 326
REJ03B0152-0210
|
▷ |