TS68230FN Ver la hoja de datos (PDF) - STMicroelectronics
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TS68230FN Datasheet PDF : 61 Pages
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TS68230
1.3. REGISTER MODEL
A register model that includes the corresponding register selects is shown in table 1.3.
Table 1.3 : Register Model.
Register
Select Bits
54321
00000
00001
00010
00011
00100
00101
00110
00111
01000
01001
01010
01011
01100
01101
01110
7
6
5
4
3
2
1
0
Port Mode
H34 H12 H4
H3
H2
H1
Control
Enable Enable Sense Sense Sense Sense
V
SVCRQ
Select
IPF
Select
Port Interrupt
Priority Control
Bit
Bit
Bit
Bit
Bit
Bit
Bit
Bit
7
6
5
4
3
2
1
0
Bit
Bit
Bit
Bit
Bit
Bit
Bit
Bit
7
6
5
4
3
2
1
0
Bit
Bit
Bit
Bit
Bit
Bit
Bit
Bit
7
6
5
4
3
2
1
0
Interrupt Vector
Number
V
V
Port A
Submode
H2 Control
H2
H1
H1
Int SVCRQ Stat
Enable Enable Ctrl
Port B
Submode
H4 Control
H4
H3
H3
Int SVCRQ Stat
Enable Enable Ctrl
Bit
Bit
Bit
Bit
Bit
Bit Bit
Bit
7
6
5
4
3
2
1
0
Bit
Bit
Bit
Bit
Bit
Bit Bit
Bit
7
6
5
4
3
2
1
0
Bit
Bit
Bit
Bit
Bit
Bit Bit
Bit
7
6
5
4
3
2
1
0
Bit
Bit
Bit
Bit
Bit
Bit Bit
Bit
7
6
5
4
3
2
1
0
Bit
Bit
Bit
Bit
Bit
Bit Bit
Bit
7
6
5
4
3
2
1
0
H4
H3
H2
H1 H4S H3S H2S H1S
Level Level Level Level
V
V
V
V
V
V
V
V
Register
Value
after
RESET
(hex
value)
0 0 Port General
Control Register
0 0 Port Service
Request Register
0 0 Port A Data
Direction Register
0 0 Port B Data
Direction Register
0 0 Port C Data
Direction Register
0 F Port Interrupt
Vector Register
0 0 Port A Control
Register
0 0 Port B Control
Register
VV
VV
VVV
VVV
VVVV
VVVV
00
Port A Data
Register
Port B Data
Register
Port A Alternate
Register
Port B Alternate
Register
Port C Data
Register
Port Status
Register
(null)
01111 V
V
V
V
V
V
V
V
0 0 (null)
* Unused, read as zero.
** Value before RESET.
*** Current value on pins.
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