DM562P
V.90 Integrated Data/ Fax/Voice/Speakerphone
Modem Device Single Chip with Memory Built in
Preliminary
5
Version: DM562P-DS-P02
February 28, 2001
DM6588 Pin Description
Pin No.
PCI internal
Pin No.
External
Pin Name
I/O
Description
11
Test4
I
Test pin 4
2~5,
9~12
UD0 - UD7
O
Modem Control Output, for external modem:
Memory address mapping of the controller is
E800H.
8
RxDCLK
I
Receive Data Rate Clock:(External)
This pin is used as reference clock of DSPRXD pin.
18
RD_SP2
I
Data Input Pin Of The Serial Port 2 (External)
The serial data is sampled at the falling edge of the
SCLK. The MSB is coming immediately after the
falling of FR_SP2 signal.
19
TXDCLK
I
Transmit Data Rate Clock:(External)
This pin is used as reference clock of DSPTXD pin.
21
DSPTxD
I
Modem Transmit Data (External)
Shifted into DM6581/DM6582 from EIA port
through this pin at the rising edge of TXDCLK.
28
RD_SP1
I
Data Input Pin Of The Serial Port 1 (External)
The serial data is sampled at the falling edge of the
SCLK. The MSB is coming immediately after the
falling of FR_SP1 signal.
6,20,37
50,80,89
107,118,123
6,20,37
50,80,89
107,118,123
GND
P
Ground
22~25
OUTP3~
OUTP0
O
Modem Control Output
For external modem, these pins are bit7~4 of the
modem control output. Memory address mapping
of the controller is C800H.
29~32
INP3~INP0
I
Modem Control Input
For external modem, these pins are bit3~0 of the
modem control input. Memory address mapping of
the controller is C800H.
13,33,45
67,94,113
128
13,33,45
67,94,113
128
VDD
P
+3.3V Power Supply
34
34
TEST2
I
Test pin 2,normal ground
35
35
TEST3
I
Test pin 3,normal ground
36
RESET
I
Reset:
An active high signal used to reset the DM6588.
42
42
XTAL1
I
Crystal Oscillator Input
43
43
XTAL2
O
Crystal Oscillator Output
46
46
/PWR
O
Controller Program Write Enable:
This pin is used to enable FLASH ROM
programming.
48
48
TD_SP1
O
Data Output Pin Of Serial Port 1
The serial data is clocked out through this pin
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