參數(shù)資料
型號(hào): PIC14000
廠商: Microchip Technology Inc.
英文描述: CTV 22C 22#22D SKT RECP
中文描述: 28引腳可編程混合信號(hào)控制器
文件頁數(shù): 53/152頁
文件大?。?/td> 953K
代理商: PIC14000
1996 Microchip Technology Inc.
Preliminary
DS40122B-page 53
PIC14000
FIGURE 7-16: MISC REGISTER
9Eh
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
MISC
SMHOG
SPGNDB SPGNDA
I
2
CSEL
SMBUS
INCLKEN
OSC2
OSC1
Read/Write
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R
POR value 00h
0
0
0
0
0
0
0
X
Bit
Name
Function
B7
SMHOG
SMHOG enable
1 = Stretch I
2
C CLK signal (hold low) when receive data buffer is full (refer to
Section 7.5.4). For pausing I
2
C transfers while preventing interruptions of A/D
conversions.
0 = Disable I
2
C CLK stretch.
Serial Port Ground Select
1 = PORTD<1:0> ground reference is the RD5/AN5 pin.
0 = PORTD<1:0> ground reference is V
SS
.
Serial Port Ground Select
1 = PORTC<7:6> ground reference is the RA1/AN1 pin.
0 = PORTC<7:6> ground reference is V
SS
.
I
2
C Port select Bit.
1 = PORTD<1:0> are used as the I
2
C clock and data lines.
0 = PORTC<7:6> are used as the I
2
C clock and data lines.
SMBus-Compatibility Select
1 = SMBus compatibility mode is enabled. PORTC<7:6> and PORTD<1:0> have
SMBus-compatible input thresholds.
0 = SMBus-compatibility is disabled. PORTC<7:6> and PORTD<1:0> have Schmitt Trig-
ger input thresholds.
Oscillator Output Select (available in IN mode only).
1 = Output IN oscillator signal divided by four on OSC2 pin.
0 = Disconnect IN oscillator signal from OSC2 pin.
OSC2 output port bit (available in IN mode only).
Writes to this location affect the OSC2 pin in IN mode. Reads return the value of the
output latch.
OSC1 input port bit (available in IN mode only).
Reads from this location return the status of the OSC1 pin in IN mode. Writes have no
effect.
B6
SPGNDB
B5
SPGNDA
B4
I
2
CSEL
B3
SMBus
B2
INCLKEN
B1
OSC2
B0
OSC1
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