W83877ATG Nuvoton Technology Corporation of America, W83877ATG Datasheet - Page 130

• Manufacturer Part Number: W83877ATG
• Manufacturer: Nuvoton Technology Corporation of America

Specifications of W83877ATG

• Lead Free Status / RoHS Status: Supplier Unconfirmed

The corresponding power-on setting pin is NRTSA (pin 36).
Note : The new value of PNPCVS must be complementary to the old one to make an effective change. For example, the user
Bit 1: Reserved.
HEFRAS (Bit 0): combines with HEFERE (bit 5 of CR0C) to define how to access Extended Function
11.2.23
When the device is in Extended Function mode and EFIR is 17H, the CR17 register can be accessed
through EFDR. The bit definitions are as follows:
Bit 7-bit 5: Reserved.
PRIRQOD (Bit 4):
must set PNPCVS to 1 first and then reset it to 0 to reset these PnP registers if the present value of PNPCVS is 0.
0
1
PNP REGISTER
Configuration Register 17 (CR17), default = 00H
printer IRQ ports are totem-poles in SPP mode and open-drains in ECP/EPP mode.
printer IRQ ports are totem-poles in all modes.
CR20
CR23
CR24
CR25
CR26
CR27
CR28
CR29
Registers (refer to bit 5 of CR0C description). The corresponding power-on setting
pin is NDTRA (pin 35).
7
6
5
4
PNPCVS = 1
3
DEH
FCH
BEH
FEH
23H
05H
43H
60H
2
- 123 -
1
W83877ATF/W83877ATG
0
DSUBLGRQ
DSUALGRQ
DSPRLGRQ
DSFDLGRQ
PRIRQOD
reserved
reserved
reserved
Publication Release Date:November 2006
PNPCVS = 0
00H
00H
00H
00H
00H
00H
00H
00H
Version 1.0