s1r72803 Epson Electronics America, Inc., s1r72803 Datasheet - Page 21

• Manufacturer Part Number: s1r72803
• Description: Link/transaction Controller
• Manufacturer: Epson Electronics America, Inc.

7.3 IEEE1394 HARDWARE SBP-2 CONTROL
The hardware SBP2 of this IC automatically executes a
PageTable fetch and data transfer according to the
Serial Bus Protocol 2 after receiving specifications of
its PageTable Size and Address. The control of the
SBP2 is performed by accessing the internal register.
Data transfer is controlled by the transmission and
reception of signals to and from the PHY-LINK interface
and the transmission/reception of a series of packets are
automatically executed by having access to the internal
SRAM area. The functions of this block are as follows.
This Block,
(1) Receives specifications of a Page Table Size, Page
(2) Can transfer data the equivalent of max. 24-page
7.4 IDE INTERFACE CONTROL
This IC contains a block to control the IDE interface. Its
functions are as follows.
This block,
(1) Accesses the IDE bus by having access to the
(2) Can monitor various kinds of signals of the IDE
(3) Controls the link-up of function blocks in accordance
(4) Manages the condition of data transfer in DMA
(5) Reads and writes the data of data bus DD15-0 of
Table Address, Speed Code, and Max Payload Size,
etc. to automatically execute a PageTable fetch and
data transfer according to the Serial Bus Protocol 2.
elements at one time. If no PageTable exists, you
can transfer data by directly specifying a data length
as a Page Table Size.
Program mode of the CPU.
The access to the data port of the CPU is available
only in PIO mode.
interface.
with the control signals and operation end signal
from the DMA control circuit.
mode of the IDE by the HDMARQ/XHDMACK
signal.
IDE from and to the FIFO in the 1394LINKCORE
by the XHIOR/XHIOW signal.
If the FIFO becomes full or empty to disable data
transfer, this block suspends data transfer with
specified timing.
EPSON
(3) Allows you to perform the pause, resume, or reset
(4) Immediately enters the error pause when an error
(5) Allows you to transfer data if you specify the
7.5 BUILT-IN CPU
Regarding the built-in CPU, refer to the S1C33208/204/
202 TECHNICAL MANUAL (and S1C33 Family ASIC
Macro Manual).
In the built-in CPU core, however, a DMA controller
and A/D converter are not integrated; this part is different
from the description on the DMA controller and A/D
converter given in TECHNICAL MANUAL (and Macro
Manual). A low speed oscillation circuit (OSC1) is not
available.
during data transfer. Though the register value is
retained even after the reset, the state machine is
restored to the initial state. You can check transfer
condition through the register any time.
arises during data transfer by which you can check
an error cause through the register. The resume
from the error pause will pick up the transaction
where the error arose.
omission of the PageTable fetch or Page Element
No. to start data.
S1R72803F00A
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