2 / 7 page
TP5208
64K SRAM ECHO PROCESSOR
Data Sheet - Version 1.1
Page 2 of 7
http://www.topro.com.tw
January 2005
Pin Description
Pin No.
Symbol
Pin Name
I/O
Description
1
VDD
Digital VDD
-
Supply voltage
2
XIN
Oscillator input
I
-
3
XOUT
Oscillator input
O
Connects to 2MHz ceramic filter
4
D1/REQ
Delay1/Request
I
Easy mode: inputs D1 data
U-COM mode: inputs request data
5
D2/SCK
Delay2/Shift clock
I
Easy mode: inputs D2 data
U-COM mode: inputs shift clock
6
D3/DATA
Delay3/Serial data
I
Easy mode: inputs D3 data
U-COM mode: inputs shift data
7
D4/IDSW
Delay4/ID switch
I
Easy mode: inputs D4 data
U-COM mode: controls ID code
8
TEST
Test
I
L = normal mode
9
EASY/U-COM
EASY/U-COM
I
H = Easy mode; L = U-COM mode
10
SLEEP
Sleep
I
H = sleep mode; L = normal mode
11
DGND
Digital GND
-
Connects to analog GND at one point
12
AGND
Analog GND
-
Connects to analog GND
13
LPF2 OUT
Low pass filter2 output
O
14
LPF2 IN
Low pass filter2 input
I
Forms low pass filter with external C, R
15
OP2 OUT
OP-AMP2 output
O
16
OP2 IN
OP-AMP2 input
I
Forms integrator with external C, R
17
CC2
Current control 2
-
-
18
CC1
Current control 1
-
-
19
REF
Reference
-
= 1/2 VCC
20
OP1 IN
OP-AMP1 input
I
21
OP1 OUT
OP-AMP1 output
O
Forms integrator with external C, R
22
LPF1 OUT
Low pass filter1 output
O
23
LPF1 IN
Low pass filter1 input
I
Forms low pass filter with external C, R
24
VCC
Analog VCC
-
Supply voltage
Functional Description
EASY Mode (EASY/U-COM = H)
D4
D3
D2
D1
fs
Td
L
L
L
L
666
12.3
L
L
L
H
666
24.6
L
L
H
L
666
36.9
L
L
H
H
666
49.2
L
H
L
L
666
61.4
L
H
L
H
666
73.7
L
H
H
L
666
86.0
L
H
H
H
666
98.3
H
L
L
L
333
110.6
H
L
L
H
333
122.9
H
L
H
L
333
135.2
H
L
H
H
333
147.5
H
H
L
L
333
159.7
H
H
L
H
333
172.0
H
H
H
L
333
184.3
H
H
H
H
333
196.6
NOTES:
f s: Sampling Frequency (KHz)
Td: Delay Time (msec)
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