Datasheet

1U Server Chassis SR1300 Floppy/CDROM and Floppy/DVDROM Module Interface Assemblies
Revision 1.2
Intel order number A94544-004
47
Pin Name Pin Name
49 FDD_DENSEL0 50 FDD_DS0_L
51 FDD_TRK0_L 52 FDD_RDATA_L
53 VCC** 54 VCC**
55 VCC** 56 VCC**
57 VCC** 58 VCC**
59 VCC** 60 VCC**
Notes:
* This signal is used only on the ATA backplane.
** VCC means +5 V
The floppy/CDROM daughter board has two connectors, one on the bottom side of the board
which mates with the high density connector on the backplane, and an 80-pin SCA type
interface connector on the top side of the board, which is used as the interface for the
floppy/CDROM drive module.
Figure 24. Floppy/CDROM Daughter Board
The following table provides the pinout for the 80-pin (Molex:71661-2380) SCA connector.
Table 30. 80-Pin SCA Interface Pinout
Pin Signal Name Signal Name Pin
1 NC GND 41
2 NC GND 42
3 NC GND 43
4 NC GND (DRIVE PSESENT SIGNAL ON) 44
5 NC CDR_DREQ 45
6 NC NC 46
7 CDR_CD3_L CDR_CS1_L 47
8 CDR_ADDR2 CDR_ADDR0 48
9 CDR_DACK_L CDR_ADDR1 49
10 CDR_IRQ CDR_IRDY 50
11 CDR_IOR_L CDR_IOW_L 51