參數(shù)資料
型號(hào): PIC16C662T-10/L
廠商: Microchip Technology
文件頁數(shù): 59/125頁
文件大小: 0K
描述: IC MCU OTP 4KX14 COMP 44PLCC
標(biāo)準(zhǔn)包裝: 500
系列: PIC® 16C
核心處理器: PIC
芯體尺寸: 8-位
速度: 10MHz
外圍設(shè)備: 欠壓檢測(cè)/復(fù)位,LED,POR,WDT
輸入/輸出數(shù): 33
程序存儲(chǔ)器容量: 7KB(4K x 14)
程序存儲(chǔ)器類型: OTP
RAM 容量: 176 x 8
電壓 - 電源 (Vcc/Vdd): 4 V ~ 6 V
振蕩器型: 外部
工作溫度: 0°C ~ 70°C
封裝/外殼: 44-LCC(J 形引線)
包裝: 帶卷 (TR)
Micrel, Inc.
KSZ8862-16/32MQL
April 2007
39
M9999-040407-3.0
The transmit Byte Count specifies the total number of bytes to be transmitted from the TXQ. Its format is given in Table 5.
Bit
Description
15-11
Reserved
10-0
TXBC Transmit Byte Count
Transmit Byte Count. Hardware uses the byte count information to conserve the TX buffer
memory for better utilization of the packet memory.
Note: The hardware behavior is unknown if an incorrect byte count information is written to
this field. Writing a 0 value to this field is not permitted.
Table 5. Transmit Byte Count Format
The data area contains six bytes of Destination Address (DA) followed by six bytes of Source Address (SA), followed by a
variable-length number of bytes. On transmit, all bytes are provided by the CPU, including the source address. The
KSZ8862M does not insert its own source address. The 802.3 Frame Length word (Frame Type in Ethernet) is not
interpreted by the KSZ8862M. It is treated transparently as data for transmit operations.
Receive Queue (RXQ) Frame Format
The frame format for the receive queue is shown in Table 6. The first word contains the status information for the frame
received. The second word is the total number of bytes of the RX frame. Following that is the packet data area. The
packet data area holds the frame itself. It may or may not include the CRC checksum depending on whether hardware
CRC stripping is enabled.
Packet Memory
Address Offset
Bit 15
Bit 0
2
nd Byte
1
st Byte
0
Status Word
2
Byte Count
4 - up
Packet Data
(maximum size is 1916)
Table 6. Receive Queue Frame Format
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