c8051t623-g Silicon Laboratories, c8051t623-g Datasheet - Page 95

• Manufacturer Part Number: c8051t623-g
• Description: Full Speed Usb Eprom Mcu Family
• Manufacturer: Silicon Laboratories

C8051T622/3 and C8051T326/7
102
In th is e x a m p le , th e c ro s s b a r is c o n fig u re d to a s s ig n th e U A R T T X 0
a n d R X 0 s ig n a ls , th e S P I s ig n a ls , a n d th e P C A s ig n a ls . N o te th a t th e
S P I s ig n a ls a re a s s ig n e d a s m u ltip le s ig n a ls , a n d th e re a re n o p in s
s k ip p e d u s in g th e P 0 S K IP o r P 1 S K IP re g is te rs .
p e rip h e ra ls in th is c o n fig u ra tio n .
1
2
3
P 0 .3 , re s p e c tiv e ly .
4
re s p e c tiv e ly .
A ll u n a s s ig n e d p in s c a n b e u s e d a s G P IO o r fo r o th e r n o n -c ro s s b a r
fu n c tio n s .
N o te s :
1 . P 1 .6 is n o t a v a ila b le o n a ll d e v ic e s .
P in N u m b e r
s t
n d
rd
th
Figure 17.4. Priority Crossbar Decoder Example 1—No Skipped Pins
T X 0 is a s s ig n e d to P 0 .4
S C K , M IS O , M O S I, a n d N S S a re a s s ig n e d to P 0 .0 , P 0 .1 , P 0 .2 , a n d
C E X 0 , C E X 1 , a n d C E X 2 a re a s s ig n e d to P 0 .6 , P 0 .7 , a n d P 1 .0 ,
R X 0 is a s s ig n e d to P 0 .5
T h e s e b o x e s re p re s e n t th e p o rt p in s w h ic h a re u s e d b y th e
S Y S C L K
F u n c tio n
P in S k ip
S e ttin g s
S p e c ia l
S ig n a ls
C E X 0
C E X 1
C E X 2
M IS O
M O S I
S C K
N S S
S D A
R X 0
S C L
R X 1
P o rt
T X 0
T X 1
E C I
T 0
T 1
0
0
1
0
2
0
P 0 S K IP
3
0
P 0
4
0
Rev. 1.1
5
0
6
0
7
0
0
0
1
0
2
0
P 1 S K IP
P 1
3
0
4
0
5
0
6
0
1
0