W83877ATF Datasheet, PDF (136/191 Pages) Winbond – enhanced version from Winbonds most popular I/O chip W83877F

W83877ATF
8.2.35 Configuration Registers (CR2B)
When the device is in Extended Function mode and EFIR is 2BH, the CR2B register can be accessed
through EFDR. This register default value is 00₁₆. The bit definitions are as follows:
765
43
21
0
PIN93FUN0
PIN93FUN1
PIN3FUN0
PIN3FUN1
PIN2FUN0
PIN2FUN1
PIN1FUN0
PIN1FUN1
Bit 7~6: PIN1FUN1~0 - Pin 1 function select.
IRQMODS^*
PIN1FUN1
PIN1FUN0
Pin 1
0
0
0
IRQ_G
0
0
1
Reserved
0
1
0
DRQ_D
0
1
1
IRSL2
1
X
X
PCICLK
* Note that: IRQMODS is defined in CR31.Bit2, that is, the IRQ mode selection bit.
Bit 5-4: PIN2FUN1~0 - Pin 2 function select.
PIN2FUN1
PIN2FUN0
0
0
0
1
1
0
1
1
Pin 2
nCS
A11
Reserved
Reserved
Bit 3-2: PIN3FUN1~0 - Pin 3 function select.
PIN3FUN1
PIN3FUN0
0
0
0
1
1
0
1
1
Pin 3
PDCIN
nDACK_D
IRSL1
IRRXH/IRSL0
- 132 -
Publication Release Date: April 1998
Version 0.51