W83977TF-A
Description
The W83877TF is an enhanced version from Winbond's most popular I/O chip W83877F --- which integrates the disk drive adapter, serial port (UART), IrDA 1.0 SIR, parallel port, configurable Plugand-Play registers for the whole chip --- plus additional powerful features: ACPI / legacy power management, serial IRQ, and IRQ sharing.
Key Features
- ACPI / legacy power management, serial IRQ, and IRQ sharing
- The W83877TF provides two high-speed serial munication ports (UARTs), one of which supports serial Infrared munication
- One of the UARTs support infrared (IR) IrDA1.0
- This function is especially valuable for notebook puter applications
- One 24-bits power management timer is implemented with the carry notify interrupt
- W83877TF also has auto power management mode to reduce the power consumption
- The serial IRQ for PCI architecture is supported, ISA IRQs (IRQ1~IRQ15) can be cascaded into one IRQSER pin
- W83877TF also features ISA bus IRQ sharing and allows two or more devices to share the same IRQ pin
- W83877TF is made to fully ply with MicrosoftTM PC97 Hardware Design Guide
- IRQs, DMAs, and I/O space resources are flexible to adjust to meet ISA PnP requirement
