EZ80F91NA050EC Zilog, EZ80F91NA050EC Datasheet - Page 304

• Manufacturer Part Number: EZ80F91NA050EC
• Description: IC ACCLAIM MCU 256KB 144-BGA
• Manufacturer: Zilog
• Series: eZ80® Acclaim!®r

Specifications of EZ80F91NA050EC

• Core Processor: Z8
• Core Size: 8-Bit
• Speed: 50MHz
• Connectivity: Ethernet, I²C, IrDA, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 32
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 16K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 105°C
• Package / Case: 144-LBGA
• Data Bus Width: 8 bit
• Maximum Clock Frequency: 50 MHz
• Number Of Programmable I/os: 32
• Number Of Timers: 16 bit
• Operating Supply Voltage: 3 V to 3.6 V
• Maximum Operating Temperature: + 105 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• For Use With: 269-4712 - KIT DEV ENCORE 32 SERIES269-4671 - BOARD ZDOTS SBC Z80ACCLAIM PLUS269-4561 - KIT DEV FOR EZ80F91 W/C-COMPILER269-4560 - KIT DEV FOR EZ80F91 W/C-COMPILER
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Data Converters: -
• Lead Free Status / Rohs Status: No
• Other names: 269-3250

Table 178. Transmit Descriptor Status
Table 179. Receive Descriptor Status
PS019215-0910
Bit
15
14
13
12
11
10
9
8
7
6
5
4
[3:0]
Bit
15
14
13
Name
TxOwner
TxAbort
TxBPA
TxHuge
TxLOOR
TxLCError
TxCrcError
TxPktDeferred
TxXsDfr
TxFifoUnderRun
TxLateCol
TxMaxCol
TxNumberOfCollisions
Name
RxOK
RxAlignError
RxCrcError
Description
0 = Host (eZ80
1 = Packet aborted (not transmitted).
1 = Back pressure applied.
1 = Packet size is very large (Pkt_Size > EmacMaxf).
1 = Type/Length field is out of range (larger than 1518 bytes).
1 = Type/Length field is not a Type field and it does not match the
actual data byte length of the Ethernet packet. The data byte length is
the number of bytes of data in the Ethernet packet between the Type/
Length field and the FCS.
1 = The packet contains an invalid FCS (CRC). This flag is set when
CRCEN = 0 and the last 4 bytes of the packet are not the valid FCS.
1 = Packet is deferred.
1 = Packet is excessively deferred. (> 6071 nibble times in 100 BaseT
or 24,287 bit times in 10 BaseT).
1 = TxFIFO experiences underrun. Check the TxAbort bit to see if the
packet is aborted or retried.
1 = A late collision occurs. Collision is detected at a byte count >
EmacCfg2[5:0]. Collisions detected before the byte count reaches
EmacCfg2[5:0] are early collisions and retried.
1 = The maximum number of collisions occurs. # Collisions >
EmacCfg3[3:0]. These packets are aborted.
This field contains the number of collisions that occur while transmitting
the packet.
Description
1 = Packet received intact.
1 = An odd number of nibbles is received.
1 = The CRC (FCS) is in error.
®
) owns, 1 = EMAC owns.
Ethernet Media Access Controller
Product Specification
295