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Rabbit 6000 User’s Manual
digi.com
135
Parallel Port E Bit 6 Register
(PEB6R)
(Address = 0x007E)
Bit(s)
Value
Description
7,5:0
These bits are ignored.
6
Write
The port buffer (bit 6) is written with the value of this bit. The port buffer
will be transferred to the port output register on the next rising edge of the
peripheral clock.
Parallel Port E Bit 7 Register
(PEB7R)
(Address = 0x007F)
Bit(s)
Value
Description
6:0
These bits are ignored.
7
Write
The port buffer (bit 7) is written with the value of this bit. The port buffer
will be transferred to the port output register on the next rising edge of the
peripheral clock.
Parallel Port Ex Control Register
(PE0CR)
(Address = 0x04F0)
(PE1CR)
(Address = 0x04F1)
(PE2CR)
(Address = 0x04F2)
(PE3CR)
(Address = 0x04F3)
(PE4CR)
(Address = 0x04F4)
(PE5CR)
(Address = 0x04F5)
(PE6CR)
(Address = 0x04F6)
(PE7CR)
(Address = 0x04F7)
Bit(s)
Value
Description
7:5
These bits are reserved and should be written with zeros.
4
0
Fast output slew rate.
1
Slow output slew rate.
3:2
00
4 mA output drive capability.
01
8 mA output drive capability.
10
10 mA output drive capability.
11
14 mA output drive capability.
1:0
00
No pullup or pulldown resistor.
01
75 k
pullup resistor.
10
75 k
pulldown resistor.
11
75 k
keeper.
Содержание 6000
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Страница 234: ...Rabbit 6000 User s Manual digi com 234 Figure 22 3 Sample Slow A D Converter Circuit...
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Страница 420: ...Rabbit 6000 User s Manual digi com 420 Figure 37 1 Memory Read and Write Cycles...