PXB4221EV34NP Lantiq, PXB4221EV34NP Datasheet - Page 29

• Manufacturer Part Number: PXB4221EV34NP
• Manufacturer: Lantiq

Specifications of PXB4221EV34NP

• Data Rate: 2.048Mbps
• Number Of Channels: 1
• Operating Supply Voltage (typ): 3.3V
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Lead Free Status / RoHS Status: Not Compliant

Table 5
Pin No.
E1
F3
L4
M2
M3
Data Sheet
Symbol
MPWR/
MPRW
MPRD/
MPTS
MPRDY
MPTA
MPIR1
MPIR2
Microprocessor Interface (cont’d)
Input (I)
Output (O)
I
I
O
Tri
O
PUB
O
PUB
29
Function
Microprocessor Write Enable (Intel Bus
Mode)
This signal is driven by the bus master to
indicate a write data transfer
Read/Write Enable (Motorola Bus Mode)
This three-state signal is driven by the bus
master to indicate the direction of the bus’s
data transfer
Microprocessor Read Enable (Intel Bus
Mode)
This signal is driven by the bus master to
indicate a read data transfer
Microprocessor Transfer Start (Motorola
Bus Mode)
This signal is asserted by the bus master to
indicate the start of a bus cycle that
transfers data to or from the device
Microprocessor Ready (Intel Bus Mode)
This three-state output indicates that the
device has accepted date from the master
(write) or has driven the data bus with valid
data (read)
Microprocessor Transfer Acknowledge
(Motorola Bus Mode)
This three-state output indicates that the
device has accepted date from the master
(write) or has driven the data bus with valid
data (read)
Microprocessor Interrupt Request 1
Main interrupt pin indicating a special event
in the IWE8.
Microprocessor Interrupt Request 2
This signal is generated by timer set 2 to
indicate that a counter expired
PXB 4219E, PXB 4220E, PXB 4221E
Pin Descriptions
IWE8, V3.4
2003-01-20