Rainbow Electronics AT77SM0101BCB02VKE User Manual
Page 5

5
AT77SM0101BCB02VKE
5391A–BIOM–09/04
The pins are used to connect the following interfaces:
•
USB device: pins 10 and 12 of J2 connector
•
USB host: pins 14 and 16 of J2 connector
•
TWI: pins 40 and 42 of J1 connector
•
JTAG: pins 32, 34, 36, 38, 40, 42 and 44 of J2 connector
•
SPI: pins 21, 23, 25, 27, 29 and 31 of J1 connector
•
Two serial links: RS-232, RS-485, IrDA and/or Smart Card
•
Ethernet or MMC/SD card
Table 2. J2 Pin Description
Pin
Description
Pin
Description
1
GND
2
3V3
3
PB22
4
PC9
5
PB19
6
PC8
7
PB18
8
PC7
9
PB17
10
DDP
11
PB16
12
DDM
13
PB15
14
HDPA
15
PB14
16
HDMA
17
PB13
18
PB29/IRQ0
19
PB12
20
PB28/FIQ
21
PB11
22
PB27
23
PB10
24
PB26
25
PB9
26
PB25
27
PB8
28
PB24
29
PB7
30
PB23
31
PB6
32
NRST
33
PB5
34
NTRST
35
PB4
36
TMS
37
PB3
38
TCK
39
PB2
40
TDO
41
PB1
42
TDI
43
PB0
44
JTAGSEL
45
PA31
46
PB21
47
PA30
48
PB20
49
3V3
50
GND
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