RCV56HCF PCI/CardBus Modem Designer’s Guide

 

 

 

Table 3-2. Bus Interface Pin Signal Definitions (Cont’d)

 

 

 

 

Label

I/O Type

 

Signal Name/Description

 

 

 

MDP INTERFACE

DA0-DA4

Ot2

 

Device Bus Address Lines 0-4.Connect to the MDP RS0-RA4 pins, respectively.

DD0-DD7

It/Ot12

 

Device Bus Data Line 0-7.Connect to the MDP D0-D7 pins, respectively.

DRD#

Ot2

 

Device Bus Read Enable. Connect to the MDP READ# pin.

DWR#

Ot2

 

Device Bus Write Enable. Connect to the MDP WRITE# pin.

DRESET#

Ot2

 

External Device Active Low Reset. Connect to the MDP RESET1# and RESET2# pins.

WKRES#

Ot12

 

Wakeup Reset. Active low wake input. Connect to the MDP WKRES# pin.

MODEM_CS#

Ot2

 

MDP Data Pump Chip Select. MODEM_CS# output low selects the MDP. Connect to the MDP CS# pin.

MODEM_IRQ

It

 

MDP Interrupt Request. MODEM_IRQ is the active low interrupt request from the MDP. Connect to the

 

 

 

MDP IRQ pin.

 

 

 

 

MODEM_CLK

Ot2

 

Modem Clock. Output clock for MDP. Connect to MDP XTLI pin.

M_TXCLK

It

 

Modem Transmit Clock. Connect to MDP M_TXCLK pin.

M_TX

Ot2

 

Modem Transmit Data. Connect to MDP M_TX pin.

M_RXCLK

It

 

Modem Receive Clock. Connect to MDP M_RXCLK pin.

M_RX

It

 

Modem Receive Data. Connect to MDP M_RX pin.

SI_FRAME

It/Ot

 

SI Frame. 8 kHz frame sync; rising edge starts frame. Connect to MDP SI_FRAME pin.

SI_CLK

It/Ot

 

SI Clock. Connect to MDP SI_CLK pin.

SI_DD

It

 

SI Data Downstream. Connect to MDP SI_DD pin.

SI_DU

Ot2

 

SI Data Upstream. Connect to MDP SI_DU pin.

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ROCKWELL PROPRIETARY INFORMATION

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Hayes Microcomputer Products RCV56HCF manual MDP Interface