SIC63616-(Rev. 1.0) NO. P52
3240-0412
Table 4.5.8.1(b) Control bits of I/O ports
D3
D2
D1
D0
Name Init
∗
1
1
0
Address
Comment
Register
FF26H
PUL13 PUL12 PUL11 PUL10
R/W
PUL13
PUL12
PUL11
PUL10
1
1
1
1
On
On
On
On
Off
Off
Off
Off
P13 pull-down control register
functions as a general-purpose register when TOUT_A is used
P12 pull-down control register
P11 pull-down control register
P10 pull-down control register
FF27H
SMT13 SMT12 SMT11 SMT10
R/W
SMT13
SMT12
SMT11
SMT10
1
1
1
1
Schmitt
Schmitt
Schmitt
Schmitt
CMOS
CMOS
CMOS
CMOS
P13 input interface level select register
functions as a general-purpose register when TOUT_A is used
P12 input interface level select register
P11 input interface level select register
P10 input interface level select register
FF28H
P23
(SS/
SRDY/
FOUT)
P22
(SIN)
P21
(SOUT)
P20
(SCLK)
R/W
P23
P22
P21
P20
1
1
1
1
High
High
High
High
Low
Low
Low
Low
P23 I/O port data
functions as a general-purpose register when SIF (slave, SRDY)
or FOUT is used
P22 I/O port data
P21 I/O port data
functions as a general-purpose register when SIF is used
P20 I/O port data
functions as a general-purpose register when SIF (master) is used
FF29H
R/W
IOC23
IOC22
IOC21
IOC20
0
0
0
0
Output
Output
Output
Output
Input
Input
Input
Input
P23 I/O control register
functions as a general-purpose register when SIF or FOUT is used
P22 I/O control register
functions as a general-purpose register when SIF is used
P21 I/O control register
functions as a general-purpose register when SIF is used
P20 I/O control register
functions as a general-purpose register when SIF is used
IOC23 IOC22 IOC21 IOC20
FF2AH
R/W
PUL23
PUL22
PUL21
PUL20
1
1
1
1
On
On
On
On
Off
Off
Off
Off
P23 pull-down control register
SS pull-down control register when SIF (slave, SS) is used
functions as a general-purpose register when SIF (slave, SRDY)
or FOUT is used
P22 pull-down control register
SIN pull-down control register when SIF is used
P21 pull-down control register
functions as a general-purpose register when SIF (SOUT) is used
P20 pull-down control register
SCLK (I) pull-down control register when SIF (slave) is used
functions as a general-purpose register when SIF (master) is used
PUL23 PUL22 PUL21 PUL20
FF2BH
R/W
P23 input interface level select register
SS input I/F level select register when SIF (slave, SS) is used
functions as a general-purpose register when SIF (slave, SRDY)
or FOUT is used
P22 input interface level select register
SIN input interface level select register when SIF is used
P21 input interface level select register
functions as a general-purpose register when SIF (SOUT) is used
P20 input interface level select register
SCLK (I) input I/F level select register when SIF (slave) is used
functions as a general-purpose register when SIF (master) is used
SMT23
SMT22
SMT21
SMT20
1
1
1
1
Schmitt
Schmitt
Schmitt
Schmitt
CMOS
CMOS
CMOS
CMOS
SMT23 SMT22 SMT21 SMT20
*1 Initial value at initial reset
*2 Not set in the circuit
*3 Constantly "0" when being read