参数资料
型号: MCP4341T-103E/ML
厂商: Microchip Technology
文件页数: 28/59页
文件大小: 0K
描述: IC DGTL POT QUAD 10K 20QFN
标准包装: 3,300
系列: WiperLock™
接片: 129
电阻(欧姆): 10k
电路数: 4
温度系数: 标准值 150 ppm/°C
存储器类型: 非易失
接口: 4 线 SPI(芯片选择)
电源电压: 2.7 V ~ 5.5 V
工作温度: -40°C ~ 125°C
安装类型: 表面贴装
封装/外壳: 20-VFQFN 裸露焊盘
供应商设备封装: 20-QFN 裸露焊盘(4x4)
包装: 带卷 (TR)
Micrel, Inc.
KSZ9021GQ
September 2010
34
M9999-091010-1.2
Register Map
The IEEE 802.3 Specification provides a 32 register address space for the PHY. Registers 0 thru 15 are standard PHY
registers, defined per the specification. Registers 16 thru 31 are vendor specific registers.
The KSZ9021GQ uses the IEEE provided register space for IEEE Defined Registers and Vendor Specific Registers, and
uses the following registers to access Extended Registers:
Register 11 (Bh) for Extended Register – Control
Register 12 (Ch) for Extended Register – Data Write
Register 13 (Dh) for Extended Register – Data Read
Examples:
Extended Register Read
// Read from Operation Mode Strap Status Register
1. Write register 11 (Bh) with 0103h
// Set register 259 (103h) for read
2. Read register 13 (Dh)
// Read register value
Extended Register Write
// Write to Operation Mode Strap Override Register
1. Write register 11 (Bh) with 8102h
// Set register 258 (102h) for write
2. Write register 12 (Ch) with 0010h
// Write 0010h value to register to set NAND Tree mode
Register Number (Hex)
Description
IEEE Defined Registers
0 (0h)
Basic Control
1 (1h)
Basic Status
2 (2h)
PHY Identifier 1
3 (3h)
PHY Identifier 2
4 (4h)
Auto-Negotiation Advertisement
5 (5h)
Auto-Negotiation Link Partner Ability
6 (6h)
Auto-Negotiation Expansion
7 (7h)
Auto-Negotiation Next Page
8 (8h)
Auto-Negotiation Link Partner Next Page Ability
9 (9h)
1000Base-T Control
10 (Ah)
1000Base-T Status
11 (Bh)
Extended Register – Control
12 (Ch)
Extended Register – Data Write
13 (Dh)
Extended Register – Data Read
14 (Eh)
Reserved
15 (Fh)
Extended – MII Status
Vendor Specific Registers
16 (10h)
Reserved
17 (11h)
Remote Loopback, LED Mode
18 (12h)
LinkMD
– Cable Diagnostic
19 (13h)
Digital PMA/PCS Status
20 (14h)
Reserved
21 (15h)
RXER Counter
22 (16h) – 26 (1Ah)
Reserved
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