System Clock Specifications; System Clock Descriptions And Frequency Specifications; System Clock Ac Specifications; Table 9-1: Sp5100 System Clock Descriptions - AMD SP5100 Data Book

AMD SP5100 Databook

9 System Clock Specifications

9.1

System Clock Descriptions and Frequency Specifications

Table 9-1 to Table 9-3 list the SP5100 Clock description and frequency specifications.

Table 9-1: SP5100 System Clock Descriptions

Clock Domain Frequency
PCIE_RCLKP,
100MHz
PCIE_RCLKN
SATA_X1,
25MHz
SATA_X2
X1, X2 32kHz
USBCLK 48MHz

Table 9-2: SP5100 System Clock Input Frequency Specifications

Clock Frequency
USBCLK 48.000 MHz
SATA_X1,
25.000 MHz
SATA_X2
PCIE_RCLKP,
100.000 MHz
PCIE_RCLKN
X1, X2

Table 9-3: SP5100 System Clock Output Frequency Specifications

Clock Frequency
PCICLK {5:0} 33.000 MHz
LPC CLK 33.000 MHz
RTC CLOCK
9.2

System Clock AC Specifications

Table 9-4 to Table 9-9 list all the AC specifications of SP5100 clocks, some at specific VIH/VIL
combinations. Figure 9-1 to Figure 9-3 below illustrate the timing labels that appear in those tables.
62
Source
Main clock generator
25MHz Crystal
32kHz Crystal
48MHz OSC / 48MHZ from main
clock generator
47.995 MHz
24.997 MHz
99.999950 (-50 PPM)
32kHz
30.03 MHz
30.03 MHz
32kHz
System Clock Specifications
Usage
Reference clock for A-Link Express
and internal PLL for core logic and
ACPI timers.
SATA Controller Reference clock
RTC reference clock
USB Controllers and HD Audio
Reference clock
Min
32.768 KHz
Min
32.768 KHz
44409 Rev. 1.70 October 10
Max
48.005 MHz
25.005 MHz
100.00005 (+ 50 PPM)
Max
33.33 MHz
33.33 MHz