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10.4.11 PCC1 Software Control Register (PCC1SCR)
Bit
7
Bit Name
-
Initial Value
-
R/W
-
The PCC1 Software Control Register (PCC1CSCR) is an 8-bit READ/WRITE register. The way it
controls pin VCC1SEL1 resembles to that of pin P1VCC1 in the PCC1GCR register does to pin
VCC1SEL0. Bits 2 and 3 serve as the VPP power selection input to MIC2563. This register is also
responsible for PC Card memory window write protect. PCC1SCR is initialized at power-up reset,
and holds its value at software reset or in software-based STANDBY mode.
Bit
Description
7 - 4
Reserved
PCC1 VPP Select 1 (P1VPP1)
3
If this bit is high: sets the voltage control pin P1VPP1 as high level
If this bit is low:
sets the voltage control pin P1VPP1 as low level
PCC1 VPP Select 0 (P1VPP0)
2
If the bit is high: sets the voltage control pin P1VPP0 as high level
If this bit is low: sets the voltage control pin P1VPP0 as low level
1
PCC1 VCC Select 1 (P1VCC1)
If this bit is high: Sets the voltage control pin VCC1SEL1 as high level.
If this bit is low: Sets the voltage control pin VCC1SEL1 as low level.
0
PCC1 Software Write Protect (P1SWP)
If this bit is high: Enables write protect. Write operations to the PC Card yield no response.
If this bit is low: Disables write protect. Write operations to the PC Card are allowed.
6
5
4
-
-
-
-
-
-
-
-
-
3
2
1
P1VPP1 P1VPP0 P1VCC1 P1SWP
0
0
0
R/W
R/W
R/W
Rev. 3.0, 03/01, page 127 of 390
0
0
R/W
Default
-
0
0
0
0
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