PQ-MDS-PCIEXP Freescale Semiconductor, PQ-MDS-PCIEXP Datasheet - Page 4

• Manufacturer Part Number: PQ-MDS-PCIEXP
• Description: PCI EXPANDER ADAPTOR
• Manufacturer: Freescale Semiconductor
• Series: PowerQUICC ™r

Specifications of PQ-MDS-PCIEXP

• Accessory Type: Adapter
• For Use With/related Products: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

1
3
4
2
ATX PS Voltages
3V3, 5V, 12V, -12V
PQ-MDS-PIB
Buffer
Enable/Disable
ATXPS_ON-
Signal
To secure fail-safe interconnection between PQ-MDS-PIB and PCI Add-in card/cards
inserted into the PQ-MDS-PCIEXP slots PCI interface buffers placed on PQ-MDS-PIB
board should be 3-stated until signal Power-OK from ATX PS (OK) received. In its turn
this signal produced by ATX PS after ATX PS_ON- signal from PQ-MDS-PIB board
(OK) received, and all voltages supplied by PS are stable. To summarize this explanation
power sequence timing-diagram represented in the Figure 2.
ATX PS
Power OK
Signal
To simplify integration procedure there is the service jumper populated in the PQ-MDS-
PCIEXP, which provide manual ATX PS_ON signal to the PS or remote one from
PQ-MDS-PIB board as it’s explained above (short J1 pins 1-2 or 2-3 correspondingly).
Usage of external ATX PS to supply inserted PCI cards provide capability to use up to 6
add-in cards without any power consumption restriction.
Two LED’s are populated on the board to indicate:
PCI Expansion Adapter Board 084-00195-1UM
-
-
Freescale Semiconductor, Inc
J1 default – short 1-2 pins (Manual ATX PS Control)
ATX-PS connection (PS-RDY) and
Normal operation (PWR-ON)
≤ 1000mS
. 6501 William Cannon Drive West MD: OE58, Austin, TX 78735 www.freescale.com
3. Power supply
4
≥1mS
Figure 2
Rev1.1
Time