U2739M-B Datasheet, PDF (29/69 Pages) ATMEL Corporation – DAB One-Chip Channel- and Source Decoder

U2739M-B
6.10.5 SFCO Interface Timing Parameter
Parameter
Clock high period
Clock low period
Data setup time
Data hold time
Window MSC high period
Delay data valid
Delay window FIC low
Symbol
tHC
tLC
ts
th
tHW
td1
td2
Min.
6.11 RS232 Interface
6.11.1 RS232 Interface Signal Description
QFP144 QFP100 Pin Name
78
55 RS232
Signal Description
RS232 output
Typ.
160
160
160
160
10.56
10.24
10.24
Max.
Unit
ns
ns
ns
ns
us
us
us
Pad Type Dir. 5 V Tol.
PRO04T
out
6.11.2 RS232 Interface Description
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
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):
RS232-ID
(Burst Identifier)
Length
(Number of Transmitted Data Words n Without Header Word)
bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
DD1
0001
Number of DD1 words
DD2
0010
Number of DD2 words
PAD
0011
Number of PAD words
The RS232 output can be configured using the ’set HSSO/
RS232 configuration’ MC command [Atmel Wireless &
Microcontrollers U2739M documentation set –
“U2739M_MC_Command_set_vxxx.pdf”]. Using this
command the user can select the application to be given
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).
6.11.3 RS232 Interface Timing Diagram
RS232
8
9
10
14 15
0
1
2
6
7
Figure 18. RS232 interface timing diagram
8
9
10
11
12
6.11.4 RS232 Interface Timing Parameter
The RS232 timing is related to the defined baud rate of the interface.
Rev. A1, 22-May-01
29 (69)