CPC5604 Datasheet, PDF (6/33 Pages) Clare, Inc. – Optical Data Access Arrangement I.C.

CPC5604
Table 2 -Package Pinout
1
VCC
2
TXF1
3
TX-
4
TX+
5
TX
6
NC
7
GND
8
OH
9
RING
10
CID
11
RX-
12
RX+
13
SNP+
14
SNP-
15
RXF
16
RX
BR-
32
TXF2
31
ZTX
30
ZNT
29
TXS
28
BR-
27
NTS
26
GAT
25
REF
24
DCS
23
DCF
22
ZDC
21
BR-
20
RPB
19
RXS
18
VDD
17
Pin #
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Name
V_CC
TXF1
TX -
TX+
TX
NC
GND
OH
RING
CID
RX-
RX+
SNP+
SNP-
RXF
RX
V_DD
RXS
RPB
BR-
ZDC
DCF
DCS
REF
GAT
NTS
BR-
TXS
ZNT
ZTX
TXF2
BR-
Function
Host power supply, +5 Volts +/-5%.
TX isolation amplifier output.
NEG differential transmit signal into DAA.
POS differential transmit signal into DAA.
TX differential amplifier input.
Not Connected.
Connect to host analog ground.
Driving this signal low asserts the off-hook condition.
Active low indicates an incoming half waved ring signal
pulsed High to Low at the ring frequency-typically 20Hz.
Driving this signal low places the Caller ID information
on the RX pins when the DAA is on hook (OH is
deasserted).
NEG differential analog receive signal from the tele-
phone line and must be AC coupled with a 0.1 uF
capacitor.
POS differential analog receive signal from the tele-
phone line and must be AC coupled with a 0.1 uF
capacitor.
One of two differential snoop inputs.
One of two differential snoop inputs.
Receive photodiode amplifier output.
Receive photoamplifier summing junction.
Power supply for line side portion of CPC5604.
Receive photodiode servo input.
Sets receive LED prebias current.
Return to bridge rectifier negative output.
Sets electronic inductor DCR/Current Limit.
DC Filter Point.
VI slope control via external resistor.
1.25V internal voltage reference.
Depletion MOSFET gate control.
Receive signal input path via Tip and Ring.
Return to bridge rectifier negative output.
Receive photodiode amplifier input.
Sets DAA impedance via external passive network.
Transmit Transconductance gain setting pin.
Receive photodiode amplifier output.
Return to bridge rectifier negative output.
6
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