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RCV56HCF PCI/CardBus Modem Designer’s Guide
1129
ROCKWELL PROPRIETARY INFORMATION
3-15
Table 3-4. MDP Pin Signal Definitions
Label I/O Type Signal/Definition
OVERHEAD SIGNALS
XTLI I
Crystal Int.
Connect the BIF MODEMCLK pin through a 33
Ω
resistor.
XTLO O
Crystal Out.
Leave open.
VDD,
AVDD
PWR
Digital Power Supply.
To +3.3V and digital circuits power supply filter.
AVAA PWR
Analog Power Supply.
To +3.3V and analog circuits power supply filter.
GND GND
Digital Ground.
Connect to digital ground.
AGND GND
Analog Ground.
Connect to analog ground.
SET3V# IA
Set 3.3V Analog Reference.
Connect to digital ground.
BIF TO MDP INTERFACE
RS0–RS4 IA
Address Lines 0-4.
Connect to the BIF DA0–DA4 pins, respectively.
D0-D7 IA/OA
Data Line 0-7.
Connect to the BIF DD0-DD7 pins, respectively.
READ# IA
Read Enable.
Connect to BIF DRD# pin.
WRITE# IA
Write Enable.
Connect to BIF DWR# pin.
RESET1#,
RESET2#
IA
External Device Active Low Reset.
Connect to the BIF DRESET# pin.
WKRES# OA
Wakeup Reset.
Active low wake-up output.
Connect to the BIF WKRES# pin.
CS# IA
Chip Select.
CS# output low selects the MDP. Connect to the BIIF MODEM_CS# pin.
IRQ OA
Interrupt Request.
MODEM_IRQ is the active low interrupt request from the MDP. Connect to the BIF
MODEM_IRQ pin.
M_TXCLK OA
Modem Transmit Clock.
Connect to BIF M_TXCLK pin.
M_TX IA
Modem Transmit Data.
Connect to BIF M_TX pin.
M_RXCLK OA
Modem Receive Clock.
Connect to BIF M_RXCLK pin.
M_RX OA
Modem Receive Data.
Connect to BIF M_RX pin.
SI_FRAME IA/OB
ISDN Frame.
8 kHz frame sync; rising edge starts frame. Connect to BIF SI_FRAME pin.
SI_CLK IA/OB
ISDN Clock.
1.536 MHz clock. Connect to BIF SI_CLK pin.
SI_DD OA
ISDN Data Downstream.
Connect to BIF SI_DD pin.
SI_DU IA
ISDN Data Upstream.
Connect to BIF SI_DU pin.
MDP TO SIEMENS PSB2186 S/T INTERFACE
IOM_FRAME IA/OB
ISDN Frame Synchronization Clock.
8 kHz frame sync; rising edge starts frame. The start of the B1
channel in time-slot 0 is marked. Connect to the ISDN device FSC pin.
IOM_CLK IA/OB
ISDN Clock.
1.536 MHz clock. Connect to the ISDN device DCL pin.
IOM_DD IA
ISDN Data Downstream.
IOM data input synchronous to IOM_CLK. Connect to the ISDN device DOUT pin.
IOM_DU OA
ISDN Data Upstream.
IOM data output synchronous to IOM_CLK. Connect to the ISDN device DIN pin.
MDP TO SIEMENS PSB21910 U INTERFACE
IOM_FRAME IA/OB
ISDN Frame Synchronization Clock.
8 kHz frame sync; rising edge starts frame. The start of the B1
channel in time-slot 0 is marked. Connect to the ISDN device FSC pin.
IOM_CLK IA/OB
ISDN Clock.
1.536 MHz clock. Connect to the ISDN device DCL pin.
IOM_DD IA
ISDN Data Downstream.
IOM data input synchronous to IOM_CLK. Connect to the ISDN device DOUT pin.
IOM_DU OA
ISDN Data Upstream.
IOM data output synchronous to IOM_CLK. Connect to the ISDN device DIN pin.