CS5516-ASZ View Datasheet(PDF) - Cirrus Logic
Part Name
Description
MFG CO.
CS5516-ASZ Datasheet PDF : 41 Pages
| |||
CDB5516/CDB5520
A bridge driver, composed of a Siliconix TP0610
transistor and a Micrel MIC4428 dual CMOS
driver, is provided which allows the BX2 output
from the CS5516 or CS5520 to provide either dc
or ac excitation to the bridge.
The digital interface pins of the A/D converter
connect to the microcontroller, or alternatively,
these connections can be cut, or the on-board
microcontroller can be removed, and the user’s
own microcontroller can be interfaced to J1
header connector.
Figure 2 illustrates the Motorola 68HC705C8
microcontroller which reads or writes data into
the A/D converter and communicates with the
PC-compatible computer via the RS-232 inter-
face. The microcontroller derives its 4 MHz
clock from the A/D converter clock. The micro-
controller is configured to communicate over the
RS-232 link at 4800 baud, no parity, 8-bit data,
and 1 stop bit. A Motorola MC145407 RS-232
interface chip is used to send and recieve data to
the PC-compatible computer via the 25-pin Sub-
D connector.
Table 1 lists the commands sent to the microcon-
troller to write to or to read from the registers in
the A/D converter. If software other than that
provided with the evaluation board is used, the
format of the data transmitted over the RS232
line is as follow: Write commands are com-
+5VD
+5VD
+ C23
47µF
0.1µF
C22
40
10k
10k
R20
VDD
3 Vpp
1
RESET
2 IRQ
U2
29
68HC705C8 PD0
38 OSC2
OSCLK 39 OSC1
30
PD1
SMODE 10 PA1
SOD 31 PD2
From
SID 32 PD3
Figure 1
SCLK
33
PD4
DRDY 36 PD7
CS 11 PA0
RST 9 PA2
34
PD5 35
TCMP 37
TCAP
PA3
PA4
PA5
PA6
PA7
8
7
6
5
4
10k
RESET
10µF
1µF
C28 +
C24
RXD
19
3 Vcc
C2-
1
C2+
16
TXD
15
+5VD
14
470 470 470
13
D1
D2
12
11
10µF
+ C25
17
VDD 18
C1-
R28
C27 10k
20 + 10µF RI 22
C1+
5
TXD
2
6
RXD 3
7
RTS 4
8
CTS 5
9
DTR
20
10
DSR 6
12
13
14
15
16
17
18
19
PB0
PB1
PB2
PB3
PB4
PB5
PB6
PB7
PC0 28
PC1 27
PC2 26
PC3 25
PC4 24
PC5 23
PC6 22
Vss
PC7 21
U4
MC145407
GND Vss
2
4
20
10µF
C26
Figure 2. Microcontroller and RS-232 Interface
DCD 8
7
Sub-D
25 Pin
DS74DB43
33
Share Link: 