參數(shù)資料
型號(hào)： AM79C901AJI
廠商： Advanced Micro Devices, Inc.
英文描述： HomePHY Single-Chip 1/10 Mbps Home Networking PHY
中文描述： HomePHY單芯片的1 / 10 Mbps的家庭網(wǎng)絡(luò)物理層
文件頁數(shù)： 41/90頁
文件大?。?/td> 714K
代理商： AM79C901AJI
Am79C901A
41
P R E L I M I N A R Y
Instruction Register and Decoding Logic
After the TAP FSM is reset, the IDCODE instruction is
always invoked. The decoding logic gives signals to con-
trol the data flow in the data registers according to the
current instruction.
Boundary Scan Register
Each Boundary Scan Register (BSR) cell has two
stages. A flip-flop and a latch are used for the Serial
Shift Stage and the Parallel Output Stage, respectively.
There are four possible operation modes in the BSR
cell shown in Table 13.
Other Data Registers
Other data registers are the following:
1. Bypass register (1 bit)
2. Device ID register (32 bits) (Table 14).
Boundary Scan Cells
In Boundary Scan, most of the chip input and output
latches are linked together to form a scan chain.
The main purpose of this is board-level testing. See
Table 15.
To force the output pins, use SAMPLE to load the
BSR cells via the TDI pin and EXTEST to force the
output. Program the output cells, and set the control
cells to enable the output, or clear the control cells to
float the output.
To sample the chip inputs and outputs, use a SAMPLE
command and cell values are shifted out through the
TDO pin. Check the values in the input cells. Both input
and output pins have input-type cells.
Table 15.
Boundary Scan Ring Order
Table 12.
IEEE 1149.1 Supported Instruction
Summary
Instruction
Name
EXTEST
Instruction
Code
0000
Description
External Test
ID Code
Inspection
Sample
Boundary
Force Tri-
State
Bypass Scan
Force Tri-
State
Bypass Scan
Mode
Test
Selected
Data
Register
BSR
IDCODE
0001
Normal
ID REG
SAMPLE
0010
Normal
BSR
TRI_ST
0011
Normal
Bypass
BYPASS
1111
Normal
Bypass
TRI_ST
0011
Normal
Bypass
BYPASS
1111
Normal
Bypass
Table 13.
BSR Mode Of Operation
1
2
3
4
Capture
Shift
Update
System Function
Table 14.
Device ID Register
Bits 31-28
Version
Bits 27-12
Part Number (1001 0000 0001 0000)
Manufacturer ID. The 11-bit manufacturer ID
code for AMD is 00000000001 in
accordance with JEDEC publication 106-A.
Always a logic 1
Bits 11-1
Bit 0
BSR Cell
No.
53
52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
Cell Name
XTAL_SEL_L
CRS
CRS
CRS_COL_OEN
COL
COL
TXD3_CSN
TXD2
TXD1_SDI
TXD0_TXDAT
TX_EN
TX_CLK_OEN
TX_CLK
TX_CLK
GM_MODE
RX_ER
RX_ER
PHY_SEL
RX_CLK
RX_CLK
RX_DV_RXEN
RX_DV_RXEN
RXD_OEN
RXD0_RXDAT
RXD0_RXDAT
RXD1
RXD1
RXD2
RXD2
RXD3
RXD3
LED_SPEED
LED_SPEED
LED_SPEED
LED_POWER
Cell
Type
1
IN
IN
OUT
CO
IN
OUT
IN
IN
IN
IN
IN
CO
IN
OUT
IN
IN
OUT
IN
IN
OUT
IN
OUT
CO
IN
OUT
IN
OUT
IN
OUT
IN
OUT
CO
IN
OUT
CO
Pin
No.
39
32
32
–
30
30
28
27
25
24
23
–
22
22
21
19
19
17
15
15
13
13
–
11
11
10
10
9
9
8
8
6
6
6
5
相關(guān)PDF資料
PDF描述
AM79C901AJIT HomePHY Single-Chip 1/10 Mbps Home Networking PHY
AM79C901AVC HomePHY Single-Chip 1/10 Mbps Home Networking PHY
AM79C901AVCT HomePHY Single-Chip 1/10 Mbps Home Networking PHY
AM79C901AVI HomePHY Single-Chip 1/10 Mbps Home Networking PHY
AM79C901AVIT HomePHY Single-Chip 1/10 Mbps Home Networking PHY
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AM79C901AJIT 制造商:AMD 制造商全稱:Advanced Micro Devices 功能描述:HomePHY Single-Chip 1/10 Mbps Home Networking PHY
AM79C901AVC 制造商:AMD 制造商全稱:Advanced Micro Devices 功能描述:HomePHY Single-Chip 1/10 Mbps Home Networking PHY
AM79C901AVC/w 制造商:Advanced Micro Devices 功能描述:79C901AVC/W
AM79C901AVC\\W 制造商:Advanced Micro Devices 功能描述:
AM79C901AVC\W 制造商:Advanced Micro Devices 功能描述:PHY 1-CH 1Mbps/10Mbps 80-Pin TQFP
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