EZ80F91NA050SG Zilog, EZ80F91NA050SG Datasheet - Page 305
![IC ACCLAIM MCU 256KB 144-BGA](/photos/12/15/121558/269-144-bga_sml.jpg)
EZ80F91NA050SG
Manufacturer Part Number
EZ80F91NA050SG
Description
IC ACCLAIM MCU 256KB 144-BGA
Manufacturer
Zilog
Series
eZ80® Acclaim!®r
Specifications of EZ80F91NA050SG
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
0°C ~ 70°C
Package / Case
144-LBGA
Processor Series
EZ80F91x
Core
eZ80
Data Bus Width
8 bit
Data Ram Size
16 KB
Maximum Clock Frequency
50 MHz
Number Of Programmable I/os
32
Operating Supply Voltage
3 V to 3.6 V
Maximum Operating Temperature
+ 70 C
Mounting Style
SMD/SMT
Development Tools By Supplier
eZ80F910300ZCOG
Minimum Operating Temperature
0 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
Lead free / RoHS Compliant
Eeprom Size
-
Data Converters
-
Lead Free Status / Rohs Status
Details
Other names
269-3870
EZ80F91NA050SG
EZ80F91NA050SG
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
EZ80F91NA050SG
Manufacturer:
ZILOG
Quantity:
20 000
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Table 179. Receive Descriptor Status (Continued)
PS019215-0910
Bit
12
11
10
9
8
7
6
5
4
3
2
1
0
Name
RxLongEvent
RxPCF
RxCF
RxMcPkt
RxBcPkt
RxVLAN
RxUOpCode
RxLOOR
RxLCError
RxCodeV
RxCEvent
RxDvEvent
RxOVR
EMAC and the System Clock
Effective Ethernet throughput in any given system is dependent upon factors such as sys-
tem clock speed, network protocol overhead, application complexity, and network traffic
conditions at any given moment. The following information provides a general guideline
about the effects of system clock speed on Ethernet operation.
The eZ80F91 MCU's EMAC block performs a synchronous function that is designed to
operate over a wide range of system clock frequencies. To understand its maximum data
1 = A Long or Dropped Event occurs. A Long Event is when a packet
1 = The 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
1 = A code violation is detected. The PHY asserts Rx error (RxER).
Description
over 50,000 bit times occurs. A Dropped Packet occurs if the minimum
interpacket gap is not met, the preamble is not pure, and the
EmacCfg3[PUREP] bit is set, or if a preamble over 11 bytes in length is
detected and the EmacCfg3[LONGP] bit is set to 1.
1 = The packet is a pause control frame.
1 = The packet is a control frame.
1 = The packet contains a multicast address.
1 = The packet contains a broadcast address.
1 = The packet is a VLAN packet.
1 = An unsupported opcode is indicated in the opcode field of the
Ethernet packet.
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 = A carrier event is previously seen. This event is defined as Rx error
RxER = 1, receive data valid (RxDV) = 0 and receive data (RxD) = Eh.
1 = A receive data (RxDV) event is previously seen. Indicates that the
last Receive event is not long enough to be a valid packet.
1 = A Receive overrun occurs in this packet. An overrun occurs when
all of the EMAC Receive buffers are in use and the Receive FIFO is full.
The hardware ignores all incoming packets until the EmacIStat
Register [Rx_Ovr] bit is cleared by the software. There is no indication
as to how many packets are ignored.
Ethernet Media Access Controller
Product Specification
296
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