Architecture Overview (Continued)
CPU Temp.
Sensor
NSC
LM75
Geode™
GXLV
Processor
Optional
LAN PCI
Card
LAN /
WAN
DMA
Arbiter
Riser Slot
MIC MIC
AC3
Anlg
PCI Bus
1
2
IN IN
VGA
IGS 50x5
Graphics
C-CUBE
“ZIVA”
SDRAM
S-Video
PAL or
NTSC
Headphone
Output
Audio Line
Output
LM4548
Codec
SGRAM
Geode™
Tuner
FM In
SGRAM
CS5530
I/O
Companion
Optional
V .90
CD In
Modem
Video Port
ISA Slot
Composite
Video In
SAA7112
Riser Slot
ISA Bus
Flash
BIOS
CATV In
TV Tuner
TDA9851
TV
Tuner
9638
ROM Slot
2.5” UDMA-33
Hard Drive
SPDIF
Module
WinCE ROM
Module
AC3
Digital
Audio
Line
Out
Notebook
Floppy
Drive
NSC
PC97317VUL-ICF
SuperI/O
Notebook DVD
Drive
Tuner FM Out
PCM1723
Internal Assembly Options
Mouse
LPT
Front
Panel
TDA8006
AC3
Anlg
(IR)
Smartcard
COM
Keybd
(IR)
USB
Ports
Figure 1-8. Example Set-Top Box System Diagram
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18
Revision 1.1
NSC [ National Semiconductor ]
