Data Sheet

Datasheet, Volume 1 of 2 131
Electrical Specifications
7.2.2.8 PECI DC Characteristics
The PECI interface operates at a nominal voltage set by Vcc
ST
. The set of DC electrical
specifications shown in the following table is used with devices normally operating from
a Vcc
ST
interface supply.
Vcc
ST
nominal levels will vary between processor families. All PECI devices will operate
at the Vcc
ST
level determined by the processor installed in the system.
V
IH
Input High Voltage (TAP, except PROC_TCK,
PROC_TRST#)
Vcc * 0.72 — V 2, 4, 5, 6
V
IL
Input Low Voltage (PROC_TCK,PROC_TRST#) — Vcc * 0.3 V 2, 5, 6
V
IH
Input High Voltage (PROC_TCK,PROC_TRST#) Vcc * 0.3 — V 2, 4, 5, 6
V
HYSTERESIS
Hysteresis Voltage Vcc * 0.2 — V -
R
ON
Buffer on Resistance (TDO) 7 17  -
V
IL
Input Low Voltage (other GTL) — Vcc * 0.6 V 2, 5, 6
V
IH
Input High Voltage (other GTL) Vcc * 0.72 — V 2, 4, 5, 6
R
ON
Buffer on Resistance (CFG/BPM) 16 24  -
R
ON
Buffer on Resistance (other GTL) 12 28  -
I
LI
Input Leakage Current — ±150 A 3
Notes:
1. Unless otherwise noted, all specifications in this table apply to all processor frequencies.
2. The Vcc
ST
referred to in these specifications refers to instantaneous Vcc
ST/IO
.
3. For V
IN
between 0 V and Vcc
ST
. Measured when the driver is tri-stated.
4. V
IH
and V
OH
may experience excursions above Vcc
ST
. However, input signal drivers should comply with the signal quality
specifications.
5. N/A
6. Those V
IL
/V
IH
values are based on ODT disabled (ODT Pull-up not exist).
Table 7-20. GTL Signal Group and Open Drain Signal Group DC Specifications (Sheet 2 of
2)
Symbol Parameter Min Max Units Notes
1
Table 7-21. PECI DC Electrical Limits (Sheet 1 of 2)
Symbol Definition and Conditions Min Max Units Notes
1
R
up
Internal pull up resistance 15 45  3
V
IN
Input Voltage Range -0.15 Vcc
ST
+ 0.15 V -
V
Hysteresis
Hysteresis 0.15 * Vcc
ST
— V -
V
IL
Input Voltage Low- Edge
Threshold Voltage
— 0.3 * Vcc
ST
V -
V
IH
Input Voltage High-Edge
Threshold Voltage
0.7 * Vcc
ST
— V -
C
bus
Bus Capacitance per Node N/A 10 pF -
C
pad
Pad Capacitance 0.7 1.8 pF -
Ileak000 leakage current @ 0V — 0.6 mA -
Ileak025 leakage current @ 0.25* Vcc
ST
— 0.4 mA -
Ileak050 leakage current @ 0.50* Vcc
ST
— 0.2 mA -
Ileak075 leakage current @ 0.75* Vcc
ST
— 0.13 mA -
Ileak100 leakage current @ Vcc
ST
— 0.10 mA -