U2739M-BFC ATMEL [ATMEL Corporation], U2739M-BFC Datasheet - Page 29

• Manufacturer Part Number: U2739M-BFC
• Description: DAB One-Chip Channel- and Source Decoder
• Manufacturer: ATMEL [ATMEL Corporation]

6.10.5
6.11 RS232 Interface
6.11.1
6.11.2
The RS232 interface is an standard serial output used for
transferring data directly to a PC COM port. One of 3
applications can be given out:
D Data decoder 1
The RS232 output can be configured using the ’set HSSO/
RS232 configuration’ MC command [Atmel Wireless &
Microcontrollers
“U2739M_MC_Command_set_vxxx.pdf”]. Using this
command the user can select the application to be given
6.11.3
RS232
6.11.4
The RS232 timing is related to the defined baud rate of the interface.
Rev. A1, 22-May-01
Clock high period
Clock low period
Data setup time
Data hold time
Window MSC high period
Delay data valid
Delay window FIC low
DD1
DD2
PAD
QFP144 QFP100
78
bit
SFCO Interface Timing Parameter
RS232 Interface Signal Description
RS232 Interface Description
RS232 Interface Timing Diagram
RS232 Interface Timing Parameter
55
15
0
0
0
(Burst Identifier)
8
U2739M
Parameter
RS232-ID
14
0
0
0
RS232
9
Pin Name
10
13
0
1
1
documentation
12
1
0
1
14
Figure 18. RS232 interface timing diagram
RS232 output
15
11
(Number of Transmitted Data Words n Without Header Word)
10
set
Signal Description
9
0
–
Symbol
tHW
tHC
tLC
td1
td2
th
ts
1
D Data decoder 2
D Programme Associated Data (PAD)
Each RS232 burst consists of a header word followed by
n data words (as indicated in the header):
out and the baud rate.
Please notice the byte order: first the high byte is trans-
mitted followed by the low byte (LSB first both).
8
2
Number of DD1 words
Number of DD2 words
Number of PAD words
7
Min.
6
Length
6
7
5
Typ.
PRO04T
10.56
10.24
10.24
Pad Type
160
160
160
160
4
U2739M-B
3
8
Max.
9
Dir.
out
2
10
1
5 V Tol.
11
Unit
29 (69)
ns
ns
ns
ns
us
us
us
12
0