Pins Pc7/A23 To Pc0/A16 Resistor Muxing Register; Table 11-20. Pc_Res_Mux Register Definitions - Sharp Blue Treak LH75400 User Manual

I/O Configuration

11.2.2.8 Pins PC7/A23 to PC0/A16 Resistor Muxing Register

PC_RES_MUX is the Pins PC7/A23 to PC0/A16 Resistor Muxing Register. This register
allows the pull-up/pull-down to be configured as needed. The active bits used in this reg-
ister are Read/Write.
BIT
FIELD
RESET
RW
BIT
FIELD
RESET
RW
ADDR
11-14
Table 11-19. PC_RES_MUX Register
31 30 29 28
0 0 0 0
R R R R
15 14 13 12
PC7 PC6
0 0 0 0
RW RW RW RW RW

Table 11-20. PC_RES_MUX Register Definitions

BITS NAME
31:16 /// Reserved Writing to these bits has no effect. Reading returns 0.
Pin PC7/A23 Resistor Source
00 = Pull-down (default)
15:14 PC7
01 = Pull-up
10 = No pull-up or pull-down
11 = Pull-down
Pin PC6/A22 Resistor Source
00 = Pull-down (default)
13:12 PC6
01 = Pull-up
10 = No pull-up or pull-down
11 = Pull-down
Pin PC5/A21 Resistor Source
00 = Pull-down (default)
11:10 PC5
01 = Pull-up
10 = No pull-up or pull-down
11 = Pull-down
Pin PC4/A20 Resistor Source
00 = Pull-down (default)
9:8 PC4
01 = Pull-up
10 = No pull-up or pull-down
11 = Pull-down
Pin PC3/A19 Resistor Source
00 = Pull-down (default)
7:6 PC3
01 = Pull-up
10 = No pull-up or pull-down
11 = Pull-down
LH75400/01/10/11 (Preliminary) User's Guide
27 26 25 24 23
///
0 0 0 0 0
R R R R R
11 10 9 8 7
PC5 PC4
0 0 0 0 0
RW RW RW RW
0xFFFE5000 + 0x1C
DESCRIPTION
6/17/03
22 21 20 19
0 0 0 0
R R R R
6 5 4 3
PC3 PC2 PC1
0 0 0 0
RW RW RW RW
18 17 16
0 0 0
R R R
2 1 0
PC0
0 0 0
RW RW RW