CS5535-UDCF AMD (ADVANCED MICRO DEVICES), CS5535-UDCF Datasheet - Page 18

• Manufacturer Part Number: CS5535-UDCF
• Manufacturer: AMD (ADVANCED MICRO DEVICES)

Specifications of CS5535-UDCF

• Operating Temperature (min): 0C
• Operating Temperature (max): 85C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Lead Free Status / RoHS Status: Compliant

2.3
The Geode CS5535 companion device integrates a fully-
buffered, ATA-5 compliant (UDMA/66) IDE interface. The
IDE interface supports one channel, which in turn supports
two devices that can operate in PIO modes 1 to 4, MDMA
modes 0 to 2, or UDMA/66 modes 0 to 4.
This interface is shared with the Flash interface, using the
same balls. The interface usage, immediately after reset, is
defined by the boot options selected (see Table 3-5 "Boot
Options Selection" on page 34). After reset, the interface
may be dynamically altered using the Ball Options MSR
(see Table 3-6 on page 34).
The IDE interface provides a variety of features to optimize
system performance, including 32-bit disk access, post
write buffers, bus master, MDMA, look-ahead read buffer,
and prefetch mechanism.
The IDE interface timing is completely programmable. Tim-
ing control covers the command active and recover pulse
widths, and command block register accesses. The IDE
data transfer speed for each device on each channel can
be independently programmed allowing high-speed IDE
peripherals to coexist on the same channel as older, com-
patible devices.
The Geode CS5535 companion device also provides a
software accessible buffered reset signal to the IDE drive.
The IDE_RST# signal is driven low during reset to the
Geode CS5535 companion device and can be driven low
or high as needed for device-power-off conditions.
2.4
The Geode CS5535 companion device provides four USB
ports, controlled by two independent controllers (USBC1
and USBC2) for 2x enhanced system performance. There
are two ports associated with each controller for a total of
four. Separate power and ground pins for the transceivers
are provided to accommodate various system designs and
provide superior noise immunity. Each pair of ports has an
associated power control line, and there is a common over-
current sense line for all four ports, compatible with the
National Semiconductor LM3526 dual-port USB power
switch. The controllers are OpenHost Controller Interface
(OHCI) v1.0 compliant, and the ports adhere to the USB
v1.1 specification, with external crimp protection diodes.
18
ATA-5 Controller
Universal Serial Bus Controllers
31506B
2.5
The audio subsection of the Geode CS5535 companion
device consists of three 32-bit stereo-buffered bus masters
(two for output, one for input) and five 16-bit mono-buffered
bus masters (three for output, two for input), whose func-
tion is to transport audio data between system memory and
external AC97 codecs.
This arrangement is capable of producing multi-channel
5.1 surround sound (left, center, right, left rear, right rear,
and low frequency effects).
The codec interface is AC97 v2.1 compliant and contains
Serial In (x2), Serial Out, Sync Out, and Bit Clock allowing
support for any AC97 codec with Sample Rate Conversion
(SRC). Additionally, the interface supports the industry-
standard 16-bit pulse code modulated (PCM) format.
2.6
A suite of 82xx devices provide all the legacy PC function-
ality required by most designs, including two programma-
ble interrupt controllers (PICs), one Programmable Interval
Timer (PIT) with three channels, and Direct Memory
Access (DMA) functions. The Geode CS5535 companion
device contains eight Multi-Function General Purpose Tim-
ers (MFGPTs) that can be used for a variety of functions. A
number of General-purpose Input/Outputs (GPIOs) are
provided, and are assigned to system functions on power-
up (i.e., LPC port); each of these may be reassigned and
given different I/O characteristics such as debounce, edge-
triggering, and so forth.
The Diverse Integration Logic (DIVIL) holds the devices
together and provides overall control and management via
MSRs.
2.6.1
The Geode CS5535 companion device DMA controller
consists of two cascaded 8237A-type DMA controllers that
together support four 8-bit channels. The DMA controller is
used to provide high speed transfers between internal chip
sources. It has full 32-bit address range support via high-
page registers. An internal mapper allows routing of any of
seven internal DMA sources to the four 8-bit DMA chan-
nels.
AMD Geode™ CS5535 Companion Device Data Book
Audio Codec 97 (AC97) Controller
Diverse Device
Legacy DMA
Architecture Overview