Pin and Signal Descriptions
Pin Descriptions
1.2.1
Power Supply Pins
provides the voltage levels for the various interface pins. These do not include the analog
power supplies for the PLLs or PHYs which are explicitly mentioned in the other pin description
tables.
Table 3:
Power Pin Assignments
I /O
Pi n
Ty p e
Power
Power
Power
D es c r ip t i o n
Pin Name
VDD
VDDO
VDD_GE
I
I
I
1.0V Digital core and CPU voltage
3.3V I/O power for MPP[44:36], MPP[19:0] and JTAG pins
1.8V or 3.3V I/O supply voltage for RGMII and SMI interfaces
3.3V I/O supply voltage for MII/MMII and SMI interfaces
NOTE:
When configure to RGMII mode at 3.3V, only 10/100 Mbps
operation is supported.
1.8V I/O supply voltage for the DDR2 SDRAM interface
VSS
1.8V analog quiet power to CPU PLL
NOTE:
See the
88F6180, 88F6190, 88F6192, and 88F6281 Design
Guide
for power supply filtering recommendations.
CPU PLL ground
1.8V analog quiet power to Core PLL
NOTE:
See the
88F6180, 88F6190, 88F6192, and 88F6281 Design
Guide
for power supply filtering recommendations.
1.8V quiet power supply to the internal Spread Spectrum Clock
Generator
Ground for the internal Spread Spectrum Clock Generator
1.8V analog quiet power to on-chip clock inverter for supporting external
crystal, and on-chip current reference for USB PHYs
NOTE:
See the
88F6180, 88F6190, 88F6192, and 88F6281 Design
Guide
for power supply filtering recommendations.
I/O supply voltage for eFuse:
• 2.5V for eFuse burning only
• 1.0V for eFuse reading only
PCI Express PHY quiet power supply 1.8V
NOTE:
See the
88F6180, 88F6190, 88F6192, and 88F6281 Design
Guide
for power supply filtering recommendations.
USB 2.0 PHY quiet 3.3V power supply
NOTE:
See the
88F6180, 88F6190, 88F6192, and 88F6281 Design
Guide
for power supply filtering recommendation.
1.5V (via battery) or 1.8V (via the board) RTC interface voltage
VDD_M
VSS
CPU_PLL_AVDD
I
I
I
Power
GND
Power
CPU_PLL_AVSS
CORE_PLL_AVDD
I
I
GND
Power
SSCG_AVDD
I
Power
SSCG_AVSS
XTAL_AVDD
I
I
GND
Power
VHV
I
Power
PEX_AVDD
I
Power
USB_AVDD
I
Power
RTC_AVDD
I
Power
Copyright © 2008 Marvell
December 2, 2008, Preliminary
Document Classification: Proprietary Information
Doc. No. MV-S104988-U0 Rev. E
Page 19
MARVELL [ MARVELL TECHNOLOGY GROUP LTD. ]
