DS33Z41 Maxim Integrated Products, DS33Z41 Datasheet - Page 17

• Manufacturer Part Number: DS33Z41
• Description: Network Controller & Processor ICs Quad Inverse-Multipl exing Ethernet Mappe
• Manufacturer: Maxim Integrated Products

Specifications of DS33Z41

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

MODEC[0]
MODEC[1]
DCEDTES
RMIIMIIS
WR/RW
NAME
RD/DS
RST
INT
PIN
A13
E1
E2
D8
D6
D7
C4
F3
TYPE
OZ
I
I
I
I
I
I
Read Data Strobe (Intel Mode). The DS33Z41 drives the data bus
(D0-D7) with the contents of the addressed register while RD and CS
are both low.
Data Strobe (Motorola Mode). Used to latch data through the
microprocessor interface. DS must be low during read and write
operations.
Write (Intel Mode). The DS33Z41 captures the contents of the data
bus (D0:D7) on the rising edge of WR and writes them to the addressed
register location. CS must be held low during write operations.
Read Write (Motorola Mode). Used to indicate read or write
operation. RW must be set high for a register read cycle and low for a
register write cycle.
Interrupt Output. Outputs a logic zero when an unmasked interrupt
event is detected. Outputs a logic zero when an unmasked interrupt
event is detected. INT is deasserted when all interrupts have been
acknowledged and serviced. Active low. Inactive state is programmable
in register GL.CR1. is deasserted when all interrupts have been
acknowledged and serviced. Active low. Inactive state is programmable
in register GL.CR1.
Reset. An active-low signal on this pin resets the internal registers and
logic. This pin should remain low until power, SYSCLKI, RX_CLK, and
TX_CLK are stable, then set high for normal operation. This input
requires a clean edge with a rise time of 25ns or less to properly reset
the device.
Mode Control
00 = Read/Write Strobe Used (Intel Mode)
01 = Data Strobe Used (Motorola Mode)
10 = Reserved. Do not use.
11 = Reserved. Do not use.
DCE or DTE Selection. The user must set this pin high for DCE Mode
selection or low for DTE Mode. In DCE Mode, the DS33Z41 MAC port
can be directly connected to another MAC. In DCE Mode, the Transmit
clock (TX_CLK) and Receive clock (RX_CLK) are output by the
DS33Z41. Note that there is no software bit selection of DCEDTES.
Note that DCE Mode is only relevant when the MAC interface is in MII
mode.
RMII or MII Selection. Set high to configure the MAC for RMII
interfacing. Set low for MII interfacing.
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