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TS4
7 AK4319A-VM (MAIN ASSY (4/6): IC4002)
18 bit 2ch D/A
¶ Block Diagram
24
LRCK
4
Serial Input
BICK
5
Interface
SDATA
6
8x
PD
7
Interpolator
"H": ON
8x
SMUTE
11
Interpolator
"L": OFF
De-emphasis
DZF
23
15
12
7 73K321L-IH (MAIN ASSY (5/6): IC5001)
MODEM IC
¶ Block Diagram
DATA
4
AD0-AD7
BUS
11
BUFFER
CONTROL
RD
14
READ
WR
13
STATUS
WRITE
ALE
12
CONTROL
CS
20
LOGIC
25
RESET
STATUS
AND
INT
17
CONTROL
LOGIC
TXD
21
RXD
22
66
1
21
22
2
3
Voltage Reference
%Σ
SCF
Modulator
%Σ
SCF
Modulator
Control
Clock OSC/Divider
13
8
9
10
8-BIT
BUS
FOR
FSK
AND
MODULATOR/
DEMODULATOR
SMART
DIALING
&
DETECT
SERIAL
TESTS:
FUNCTIONS
PORT
ALB. DLB
FOR
RDLB
DATA
PATTERNS
CLOCK
GENERATOR
POWER
28
26
23
19
18
1
2
3
¶ Pin Assignment
DIF1
DVDD
20
VREF
DVSS
LRCK
19
AOUTL+
18
AOUTL–
BICK
SDATA
17
AOUTR+
16
AOUTR–
PD
XTI
XTO
CLKO
14
SMUTE
"L": CLK=256fs
"H": CLK=384fs
DEM0
DTMF &
TONE
GENERATORS
5
6
TRANSMIT
16
TXA
FILTER
7
RECEIVE
27
RXA
FILTER
8
9
10
11
15
24
(TOP VIEW)
1
2
3
4
5
6
7
8
9
10
11
12
¶ Pin Assignment
4
3
2
1
28
PLCC PINOUTS
ARE THE SAME AS
THE 28-PIN DIP
12
13
14
15
16
DIF0
24
DZF
23
AVSS
22
AVDD
21
VREF
20
AOUTL+
19
AOUTL–
18
AOUTR+
17
AOUTR–
16
TST
15
CKS
14
DEM1
13
27
26
25
24
23
22
21
20
19
17
18
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