AMD SP5100 Databook
44409 Rev. 1.70 October 10
58
Functional Description
ATA bus and supports one Serial ATA device. On transfer rate, SATA controller supports both Serial ATA
Generation I (1.5 Gb/s) and Generation II (3.0 Gb/s).
Figure 9-5
below is a diagram for the SATA block.
The SP5100 SATA controller can operate in three modes:
1) All six channels can be configured as IDE mode. In this configuration, the programming interface of
two of the channels (4 and 5) is under the PATA controller
2) Four channels configured as SATA AHCI and channel 4 and 5 configured in IDE mode. In this
configuration, the programming interface of channel 4 and 5 are under the PATA controller
3) All six channels are configured as SATA AHCI mode.
512-Byte Reception
FIFO
512-Byte Transmission
FIFO
64
-bit PCI
/B
-Link Interface
data to
be read
data to be
written
Serdes
Interface
PHY
Link
Host
Transport
Clock
Asicclk0
Port0 link clock
Blink clock
Port0
Port3
Port1
AHCI Global Control Register & Port Mapping
Asicclk3
Asicclk1
Port2
Asicclk2
Port4
Asicclk4
Port5
Asicclk5
Figure 8-5: Block Diagram for the SATA Module
8.8
PCI Bridge
SP5100 PCI Bridge supports 5 PCI slots by default but can be optionally configured to support a 6
th
slot.
The PCI bridge runs at 33 MHz and can support CLKRUN# function with individual clock override (option
not to stop specific PCICLK). In addition, it has the capability to hide individual PCI device.