73M2901-32I-3 데이터 시트보기 (PDF) - TDK Corporation
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73M2901-32I-3 Datasheet PDF : 17 Pages
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73M2901/3.3V
Advanced Single
Chip Modem
PIN DESCRIPTIONS (continued)
OSCILLATOR PIN DESCRIPTION
PIN NAME
OSCIN
OSCOUT
32-PIN
24
23
44-PIN
26
25
TYPE
I
O
DESCRIPTION
Crystal input for internal oscillator, also input for external
source.
Crystal oscillator output.
DIGITAL INTERFACE PIN DESCRIPTION
PIN NAME
RESET
RXCLK
RXD
TXCLK
TXD
USR10
USR11
RTS (USR12)
CTS (USR13)
DSR (USR14)
DCD (USR15)
RI (USR16)
RELAY (USR17)
32-PIN
13
31
30
28
27
12
11
10
9
8
7
4
3
44-PIN
9
36
35
31
30
8
7
6
5
4
3
43
40
TYPE
I
O
O
O
I
I/O
I/O
I
O
O
O
O
O
DESCRIPTION
Resets 73M2901/3.3V
Receive Data Synchronous Clock
Serial output to DTE.
Transmit Data Synchronous Clock
Serial data input from DTE.
This pin can optionally be configured as an active low detect
pin. This can be used to implement such functions as “parallel-
pick-up”, “line-in-use”, or “seize” detect.
Programmable I/O port. This pin can ooptionnaly be used to
control an external switch for Caller ID decoding operations.
Request to Send
Clear to Send
Data Set Ready
Data Carrier Detect
Ring Indicator
Relay driver output
4
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