Altera Transceiver Signal Integrity Development Kit, Stratix V GX Edition - Manual (Page 50)

2–42 Chapter 2: Board Components
Power Supply
Transceiver Signal Integrity Development Kit July 2012 Altera Corporation
Stratix V GX Edition Reference Manual
Power Distribution System
Figure 2–10 shows the power distribution system on the development board. The
VCCR_GTB , VCCT_GTB, and VCCL_GTB power rails are separated on the 28G transceivers
but are combined on the 12.5G transceivers.
Temperature Sense
The Stratix V GX die uses a MAX1619 temperature sense device for temperature
monitoring. The device connects to the MAX II CPLD EPM2210 System Controller
and the Stratix V GX device by a 2-wire SMB interface. The MAX1619 device is located
at slave address 0011000b (18h).
Figure 2–10. Power Distribution System
LEGEND
Stratix V GX Power
Other Power
Bead
Bead
1.5 V
0.90 V / 1.0 V
14 V - 20 V
DC Input
LTC3855
Switching
Regulator
0.90 V VCC
VCCHIP
VCCHSSI
5 V
LTC3855
Switching
Regulator
2.5 V
3.3 V
3.3 V Devices LTM4615
Dual Switcher
(4 A)
1 LDO (1.5 A)
LTM4608
Switcher
(8 A)
VCCIO
VCCPD
VCCPGM
VCCBAT
2.5 V Devices
2.5 V / 3.0 V
VCCA_GXB
LCD, Fan
VCCA_PLL
VCCAUX
SFP+
VCCH_GXB
VCCD_PLL
VCCPT
1.8 V LTC3026
LDO (1.5 A)
LTC3026
LDO (1.5 A)
LTC3026
LDO (1.5 A)
LTC3026
LDO (1.5 A)
LTC3026
LDO (1.5 A)
XFP
VCCRT_GXB
VCCR_GTB
VCCT_GXB
VCCL_GTB
Ethernet