tmp1941af TOSHIBA Semiconductor CORPORATION, tmp1941af Datasheet - Page 99
tmp1941af
Manufacturer Part Number
tmp1941af
Description
32-bit Tx System Risc
Manufacturer
TOSHIBA Semiconductor CORPORATION
Datasheet
1.TMP1941AF.pdf
(354 pages)
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P9
(0xFFFF_F031)
P9CR
(0xFFFF_F034)
P9FC
(0xFFFF_F035)
CTS1 /SCLK1 Input Settings
P9FC.P95F
P9CR.P95C
Name
Read/Write
Reset Value
Name
Read/Write
Reset Value
Function
Name
Read/Write
Reset Value
Function
Note 1:
Note 2:
1
0
Setting bit 0 of the Open-Drain Enable (ODE) register configures theTXD0 pin as an open-drain
output. Setting bit 1 of the ODE register configures the TXD1 pin as an open-drain output. See
Section 7.11.
The P91/RXD0 and P94/RXD1 pins do not have bits for selecting pin functions. These pins can
be continuously used as shared input port and serial data input pins.
Low-speed oscillator consideration
When a low-frequency crystal is connected between XT1 (P96) and XT2 (P97), the following
register settings are required to reduce power consumption:
When a crystal is connected between XT1 and XT2:
When XT1 is driven with an external clock:
SCLK1 Output Settings
TXD1 Output Settings
P9FC.P95F
P9CR.P95C
P9FC.P93F
P9CR.P93C
P9CR.P96C–P97C = 11
P9.P96–P97 = 00
P9CR.P96C–P97C = 11
P9.P96–P97 = 10
P97C
P97
7
7
7
1
1
Output mode
P96C
Figure 7.24 Port 9 Registers
P96
6
6
6
1
1
Port 9 Function Register
Port 9 Control Register
TMP1941AF-59
Port 9 Register
0: Port
1: SCLK1
1
1
1
1
0: IN
output or
SCLK1
input
P95C
CTS1 /
P95F
P95
5
5
5
1
0
0
CTS1 /SCLK0 Input Settings
P9FC.P92F
P9CR.P92C
1: OUT
P94C
P94
W
4
4
4
1
0
R/W
W
0: Port
1: TXD1
P93C
P93F
P93
3
3
3
1
0
0
Input mode
1
0
0: Port
1: SCLK0
Port 9 Direction Settings
output or
SCLK0
input
P92C
CTS /
P92F
P92
2
2
2
1
0
0
1
0
SCLK0 Output Settings
TXD0 Output Settings
P9FC.P90F
P9CR.P90C
P9FC.P92F
P9CR.P92C
0
TMP1941AF
Output
P91C
Input
P91
1
1
1
1
0
2003-03-27
0: Port
1: TXD0
P90C
P90F
P90
0
0
0
1
0
0
1
1
1
1
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