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Intel
®
IQ31244 Customer Reference Board
User’s Manual 23
5.0 SATA Interface
On the IQ31244, the Intel
®
31154 133 MHz PCI Bridge interfaces with four Intel
®
31244 PCI-X to
Serial ATA Controllers on the 64-bit data secondary PCI-X bus clocking at 100 MHz. The 31244
chip transmits and receives commands to one of the four Serial ATA channel with speeds of
1.5 Gb/s and 8b/10b encoded data. Each 31244 controller (U27–U30) has four channels. There is a
total of sixteen SATA signal connectors (J21–J36) on the IQ31244 board. The IQ31244 is
configured for Direct Port Access (DPA) mode to allow independent control of the SATA devices.
Table 13. SATA Port Assignment
SATA
Controller
Port 0 Port 1 Port 2 Port 3 LED
U27 J24 J23 J22 J21 J16
U28 J28 J27 J26 J25 J17
U29 J32 J31 J30 J29 J18
U30 J36 J35 J34 J33 J20
Table 14. SATA Port Pin Assignment
Pin Symbol
1Ground
2A+
3A-
4Ground
5B-
6B+
7Ground