M1-SYSMGMT-DEV-KIT-FP3 Actel, M1-SYSMGMT-DEV-KIT-FP3 Datasheet - Page 20

• Manufacturer Part Number: M1-SYSMGMT-DEV-KIT-FP3
• Description: MCU, MPU & DSP Development Tools System Management Development Kit
• Manufacturer: Actel

Specifications of M1-SYSMGMT-DEV-KIT-FP3

• Processor To Be Evaluated: AFS1500-FG484
• Interface Type: RS-232, USB
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Hardware Components
PS_ON# Signal
Power_OK Signal
5VSB Signal
Gate Driver
20
The ATX supply plugs in to the J72 connector. The PS_ON# signal is the main switch for the ATX supply. The signal
logic is controlled by the signal AFS_PS_ON on the M1AFS1500-FG484 device.
The PWR_OK signal is an output of the ATX supply. It is a flag set by the ATX supply if all output voltages are good.
The PWR_OK is continuously monitored by the M1AFS1500-FG484 device using a regular I/O pin
IN_POWER_OK.
The 5VSB signal on the J72 ATX supply is routed directly to the 5VSB pin on the J73 ATX connector. It does not go to
the M1AFS1500-FG484 device. This signal is a sense voltage, which is an input signal to the ATX supply from a
plugged in daughter board.
All input voltages (12 V, 5 V, 3.3 V) are monitored through the AV pads on the M1AFS1500-FG484 device
8 on page
On/Off using the gate driver (AG) controlling the FET.
18). The input voltage goes to a P-Type Power MOSFET (FDS7079ZN3). All three voltages can be switched
0
1
0
5 V
(M1AFS1500-FG484)
PWR_OK (ATX)
AFS_PS_ON
Table 2-9 · ATX Main Power Connect Pinout by Function (Continued)
Signal Function
PWR_OK
PS_ON#
COM
COM
N/C
Table 2-11 · PWR_OK Signal Settings
Table 2-10 · PS_ON# Signal Settings
IN_POWER_OK
PS_ON# (ATX)
(M1AFS)
3.3 V
1
0
0
16
17
18
14
8
M1 System Management Board User’s Guide
Pin Number
ATX Supply
ATX Supply
GOOD
BAD
Off
On
(Figure 2-