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PCA9504A

NXP
Part Number PCA9504A
Manufacturer NXP
Description Glue chip 4
Published Mar 22, 2005
Detailed Description INTEGRATED CIRCUITS PCA9504A Glue chip 4 Product data Supersedes data of 2003 Nov 10 2004 May 11 Philips Semiconductor...
Datasheet PDF File PCA9504A PDF File

PCA9504A
PCA9504A

Overview
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.
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 PIN CONFIGURATION VREF3IN V_5P0_STBY V_3P3_STBY GPO_FLUSH_CACHE/GP1_IN 1 2 3 4 5 6 7 8 9 56 GP3_OUT 55 GP3_IN 54 STRAP 53 VCCP_VREF 52 VSYNC_5V 51 HSYNC_5V 50 VSYNC_3V 49 HSYNC_3V 48 REF5V_STBY 47 AUD_SHDN 46 MUTE_AUD 45 VREF5IN 44 REF5V 43 GND 42 RSMRST 41 TEST_EN 40 GRN_LED 39 YLW_LED 38...


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