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GTL2009
Datasheet
General description
The GTL2009 is designed for the Nocona and Dempsey/Blackford dual Intel Xeon processor platforms to compare the Front-Side Bus (FSB) frequency settings and set the common FSB frequency at the lowest setting if both processor slots are occupied or the FSB setting of the occupied processor slot if only one processor is being used. A default FSB frequency of 100 MHz is initially set upon power-up when VDD is greater than 1.5 V.
Magnitude comparisons and frequency multiplexing to compute the common FSB frequency occurs when the two 3-bit FSB GTL inputs from the chip sets are valid. The common FSB frequency GTL outputs switch from the default frequency to the computed frequency when the GTL reference voltage input (VREF) crosses a static 0.6 V internally generated input comparator reference voltage. The GTL2009 then continually monitors the FSB frequency and slot occupied inputs for any further changes.
The Nocona and Dempsey/Blackford Xeon processors specify a VTT of 1.2 V and 1.1 V, as well as a nominal Vref of 0.76 V and 0.73 V respectively. To allow for future voltage level changes that may extend Vref to 0.63 of VTT (minimum of 0.693 V with VTT of 1.1 V) the GTL2009 allows a minimum Vref of 0.66 V. Characterization results show that there is little DC or AC performance variation between these levels.
The GTL2009 is a companion chip to the GTL2006 platform health management GTL-to-LVTTL translator and the newer GTL2007 that adds an enable function that disables the error output to the monitoring agent for platforms that monitor the individual error conditions from each processor.
Features
- Compares FSB frequency inputs to set the lowest frequency as the common bus frequency.
- Operates at a range of GTL signal levels
- 3.0 V to 3.6 V operation
- LVTTL I/O are not 5 V tolerant
- Companion chip to GTL2006 and GTL2007
- ESD protection exceeds 2000 V HBM per JESD22-A114, 200 V MM per JESD22-A115 and 1000 V CDM per JESD22-C101
- Latch-up testing is done to JEDEC Standard JESD78, which exceeds 500 mA
- Available in TSSOP16 package
Products/packages
| Type number | North American Type number | Ordering code (12NC) | Product status | Package | Packing | Marking | Chemical content | Leadfree conversion date |
|---|---|---|---|---|---|---|---|---|
| GTL2009PW | GTL2009PW | 9352 783 65112 | Volume production | SOT403-1
(TSSOP16) | Tube | Standard Marking | GTL2009PW
| Always Pb-free |
| GTL2009PW | GTL2009PW-T | 9352 783 65118 | Volume production | SOT403-1
(TSSOP16) | Reel Pack, SMD, 13" | Standard Marking | GTL2009PW
| Always Pb-free |
Pricing/ordering/availability
| Type number | Ordering code(12NC) | Indicative price/unit($) | Region | Distributor | In stock | Order quantity | Inventory date | Buy online | Samples |
|---|---|---|---|---|---|---|---|---|---|
| GTL2009PW | 9352 783 65112 | 0.5200 | NA | DIGI-KEY CORPORATION | 163 | 1/6/2009 | Buy online | not available | |
| GTL2009PW | 9352 783 65118 | 0.5200 | Order samples |
Design support
Application Notes
AN10216_1;
I2C manual (27-Mar-03)
Support Documents
75012794;
GTL16612/GTL1655 -- 18- and 16-bit bi-directional GTL-to-LVTTL/TTL translators (15-Jun-04)75011212;
I2C 2002-1A Evaluation Board Kit (2003-03-01)39340011_jp;
I2C-bus specification (latest version) (2004-06-22)Parametrics/similar products
| Type number | Package | Supply voltage(V) | Application | FUNCTION | Operating temp.(Cel) | # of Bits | TTL Drive(mA) | GTL Drive(mA) | Voltage Translation Range(V) |
|---|---|---|---|---|---|---|---|---|---|
| GTL2009PW | SOT403-1
(TSSOP16) | 3.0~3.6 | Xeon Dual Processor Front Side Bus Frequency Selection | Compares FSB Frequencies and automatically selects proper frequency | -40~85 | 3 | 12 | 15 | No translation, stays GTL to GTL or LVTTL to LVTTL |
Similar products
GTL2009
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