SPC7281 Epson Electronics America, Inc., SPC7281 Datasheet - Page 7

• Manufacturer Part Number: SPC7281
• Description: IEEE1394 Controller
• Manufacturer: Epson Electronics America, Inc.

3. INTERNAL BLOCK DESCRIPTION
3.1 BLOCK DIAGRAM
3.2 BLOCK DIAGRAM DESCRIPTION
XHDMACK
HDD [15:0]
XHPDIAG
HDMARQ
HDA [2:0]
XCS [1:0]
XHDASP
HIORDY
HINTRQ
C33 CORE Block
The C33 CORE Block consists of the function block-
C33_CORE- that includes the CPU, BCU (bus control
unit), ITC (interrupt controller), CLG (clock
generator), and DBG (debug unit), the external
i n t e r f a c e I / O p a d b l o c k - P A D _ C O R E ,
PAD_CORE_OPTION-, and the block to interface
with the peripheral circuits on the chip -SBUS-.
C33_PERI Block (C33 peripheral circuit block)
The C33_PERI Block consists of the PSC (prescaler),
XHIOW
XHRST
XREST
ICEMD
X2SPD
XHIOR
PLLS1
PLLS0
OSC4
OSC3
TVEP
XNMI
DSIO
(32KWord X 16bit)
IDE
I/F
FLASH ROM
64KByte
Register
for IDE
FIFO
DMA
IDE
IDE
for TRAN&SBP2
Intenal Packet Memory (8KByte)
TRAN &
Register
Control
SBP2
(8KByte)
Internal
Buffer I/F Maneger
RAM
Fig. 3.1 Block diagram
for ATF
for ITF
for RF
DMA
DMA
DMA
EPSON
for 1394Tx/Rx
(Prescaaler, 8-bit timer, 16bit timer, Clock timer,
Register
(CPU, BCU, ITC, CLG, DBG)
AsyncTx
IsoTx
Serial interface, Ports)
FIFO
FIFO
FIFO
6-channel T8 (8-bit programmable timer), WDT
(watch dog timer), 6-channel T16 with an event
counter (16-bit programmable timer), 4-channel SIO
(serial interface), input and I/O ports, and CTM
(clock timer).
Internal RAM Block
SRAM for the built-in memory area (Area 0).
Internal Flash Block
Flash for the built-in memory area (Area 10).
Rx
C33_CORE
C33_SBUS
C33_PERI
LINK & TRAN
LINK&TRAN
Register for
1394
Core
C33 peripheral Block
C33 Macro Block
C33 Core Block
PHY/LINK
1394
I/F
S1R72801F00A
AD [23:0]
DT [15:0]
XCE10_EX
XCE [9:4]
EA10MD [1:0]
XWAIT
EXT_MD
XRD
XWR
XWRH
BCLK
P[14:04]
SRDY
SCLK
SOUT
SIN
D [7:0]
CTL [1:0]
LREQ
LPS
LINKON
BHEN
XISO
SCLK
3