PCA9504A

INTEGRATED CIRCUITS PCA9504A Glue chip 4 Product data Supersedes data of 2003 Nov 10 2004 May 11 Philips Semiconductors Philips Semiconductors Product data Glue chip 4 PCA9504A platforms based on Intel® processors and chipsets that require additional external circuitry in order to function properly. It is used on entry servers/workstations (840 and 860 chipsets), high-end desktops (820 and 850 chipsets), as well as mid range (815, 830 and 845 chipsets) and low-end (810 chipset) motherboards. Some of these functionalities include meeting timing specifications, buffering signals, and switching between power wells. The PCA9504A Glue Chip 4 integrates miscellaneous motherboard logic and analog functions into a single, small footprint 56-pin TSSOP device. The Glue Chip 4 typically resides on the motherboard close to the I/O controller Hub (ICH) and is optimized for the Intel 82801BA I/O controller hub (ICH2). FEATURES Dual, Strapping, Selectable Feature Sets Audio-disable Circuit Mute Audio Circuit 5 V reference generation 5 V standby reference generation HD single color LED driver IDE reset signal generation/PCIRST# buffers PWROK (PWRGD_3V) signal generation Power Sequencing / BACKFEED_CUT Power Supply turn on circuitry RMSRST# generation Voltage translation for DDC to VGA monitor HSYNCH / VSYNCH voltage translation to VGA monitor 3-state buffers for test Extra GP Logic gates Power LED Drivers Flash FLUSH# / INIT# circuit 5 V I2C to 3....