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| 型號： | KSZ8863FLL-EVAL |
| 廠商： | Micrel Inc |
| 文件頁數(shù)： | 33/106頁 |
| 文件大?。?/td> | 0K |
| 描述： | BOARD EVALUATION FOR KSZ8863FLL |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 主要目的： | 接口，以太網(wǎng) PHY |
| 嵌入式： | 否 |
| 已用 IC / 零件： | KSZ8863FLL |
| 已供物品： | 板 |
| 相關(guān)產(chǎn)品： | 576-3750-ND - IC ETHERNET SWITCH 3PORT 48-LQFP 576-3576-ND - IC ETHERNET SW 3PORT 48-LQFP |
| 其它名稱： | 576-3866 |
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PIC16C72 Series
1998 Microchip Technology Inc.
Preliminary
DS39016A-page 31
6.0
TIMER2 MODULE
The Timer2 module timer has the following features:
8-bit timer (TMR2 register)
8-bit period register (PR2)
Readable and writable (Both registers)
Software programmable prescaler (1:1, 1:4, 1:16)
Software programmable postscaler (1:1 to 1:16)
Interrupt on TMR2 match of PR2
SSP module optional use of TMR2 output to gen-
erate clock shift
Timer2 has a control register, shown in Figure 6-2.
Timer2 can be shut off by clearing control bit TMR2ON
(T2CON<2>) to minimize power consumption.
Figure 6-1 is a simplied block diagram of the Timer2
module.
Additional information on timer modules is available in
the PICmicro Mid-Range MCU Reference Manual,
DS33023.
6.1
Timer2 Operation
Timer2 can be used as the PWM time-base for PWM
mode of the CCP module.
The TMR2 register is readable and writable, and is
cleared on any device reset.
The input clock (FOSC/4) has a prescale option of 1:1,
1:4
or
1:16,
selected
by
control
bits
T2CKPS1:T2CKPS0 (T2CON<1:0>).
The match output of TMR2 goes through a 4-bit
postscaler (which gives a 1:1 to 1:16 scaling inclusive)
to generate a TMR2 interrupt (latched in ag bit
TMR2IF, (PIR1<1>)).
The prescaler and postscaler counters are cleared
when any of the following occurs:
a write to the TMR2 register
a write to the T2CON register
any device reset (Power-on Reset, MCLR reset,
Watchdog Timer reset, or Brown-out Reset)
TMR2 is not cleared when T2CON is written.
6.2
Timer2 Interrupt
The Timer2 module has an 8-bit period register PR2.
Timer2 increments from 00h until it matches PR2 and
then resets to 00h on the next increment cycle. PR2 is
a readable and writable register. The PR2 register is ini-
tialized to FFh upon reset.
6.3
Output of TMR2
The output of TMR2 (before the postscaler) is fed to the
Synchronous Serial Port module which optionally uses
it to generate shift clock.
FIGURE 6-1:
TIMER2 BLOCK DIAGRAM
Comparator
TMR2
Sets ag
TMR2 reg
output (1)
Reset
Postscaler
Prescaler
PR2 reg
2
FOSC/4
1:1
1:16
1:1, 1:4, 1:16
EQ
4
bit TMR2IF
Note 1:
TMR2 register output can be software selected
by the SSP Module as a baud clock.
to
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| KSZ8863FLLI | 功能描述:以太網(wǎng) IC 3-Port 10/100 Ethernet Switch w/ 1x FX Port and 1x TX Port (Industrial Grade) RoHS:否 制造商:Micrel 產(chǎn)品:Ethernet Switches 收發(fā)器數(shù)量:2 數(shù)據(jù)速率:10 Mb/s, 100 Mb/s 電源電壓-最大:1.25 V, 3.45 V 電源電壓-最小:1.15 V, 3.15 V 最大工作溫度:+ 85 C 封裝 / 箱體:QFN-64 封裝:Tray |
| KSZ8863MLL | 功能描述:以太網(wǎng) IC 3-Port Copper 10/100 Ethernet Switch with 1x MII Interface (Lead Free) RoHS:否 制造商:Micrel 產(chǎn)品:Ethernet Switches 收發(fā)器數(shù)量:2 數(shù)據(jù)速率:10 Mb/s, 100 Mb/s 電源電壓-最大:1.25 V, 3.45 V 電源電壓-最小:1.15 V, 3.15 V 最大工作溫度:+ 85 C 封裝 / 箱體:QFN-64 封裝:Tray |
| KSZ8863MLL-EVAL | 功能描述:以太網(wǎng)開發(fā)工具 3-Port Copper 10/100 Ethernet Switch with 1x MII Interface - Evaluation Board RoHS:否 制造商:Micrel 產(chǎn)品:Evaluation Boards 類型:Ethernet Transceivers 工具用于評估:KSZ8873RLL 接口類型:RMII 工作電源電壓: |
| KSZ8863MLLI | 功能描述:以太網(wǎng) IC 3-Port Copper 10/100 Ethernet Switch w/ 1x MII Interface (Industrial Grade) RoHS:否 制造商:Micrel 產(chǎn)品:Ethernet Switches 收發(fā)器數(shù)量:2 數(shù)據(jù)速率:10 Mb/s, 100 Mb/s 電源電壓-最大:1.25 V, 3.45 V 電源電壓-最小:1.15 V, 3.15 V 最大工作溫度:+ 85 C 封裝 / 箱體:QFN-64 封裝:Tray |
| KSZ8863RLL | 功能描述:以太網(wǎng) IC 3-Port Copper 10/100 Ethernet Switch with 1x RMII Interface (Lead Free) RoHS:否 制造商:Micrel 產(chǎn)品:Ethernet Switches 收發(fā)器數(shù)量:2 數(shù)據(jù)速率:10 Mb/s, 100 Mb/s 電源電壓-最大:1.25 V, 3.45 V 電源電壓-最小:1.15 V, 3.15 V 最大工作溫度:+ 85 C 封裝 / 箱體:QFN-64 封裝:Tray |
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