DESCRIPTION
The PCA9504A Glue Chip 4 is a highly integrated and cost-efficient custom ASIC that reduces logic part count, overall component cost, and board space requirements for PC designers and manufacturers. The Glue Chip 4 supports the latest generation of high-volume 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.

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 3.3 V SMBus conversion to 400 kHz
• Requires both 3.3 V and 5.0 V operating voltages
• 0 to +70 °C operating temperature range
• ESD protection exceeds 1000 V HBM per JESD22-A114 and 750 V CDM per JESD22-C101
• Latch-up testing is done to JEDEC Standard JESD78 which exceeds 100 mA
• Package offered: TSSOP56