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参数资料
| 型号： | TFP501PZP |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 消费家电 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP100 |
| 封装： | 14 X 14 MM, 1 MM HEIGHT, 0.50 MM PITCH, GREEN, PLASTIC, HTQFP-100 |
| 文件页数： | 8/24页 |
| 文件大小： | 373K |
| 代理商： | TFP501PZP |
TFP501
PanelBus HDCP DIGITAL RECEIVER
SLDS127B JULY 2001 REVISED AUGUST 2002
16
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
TFP501 output driver configurations (continued)
Sync detect. The TFP501 offers an output, SCDT, to indicate link activity. The TFP501 monitors activity on DE
to determine if the link is active. When 1 million pixel clock periods pass without a transition on DE, the TFP501
considers the link inactive and SCDT is driven low. SCDT goes high immediately after the first eight transitions
on DE. SCDT again goes low when no more transitions are seen after 218 oscillator clocks.
SCDT can be used to signal a system power management circuit to initiate a system power down when the link
is considered inactive. The SCDT can also be tied directly to the TFP501 PDO input to power down the output
drivers when the link is inactive. It is not recommended to use the SCDT to drive the PD input since, once in
complete power down, the analog inputs are ignored and the SCDT state does not change. An external, system
power management circuit to drive PD is preferred.
HDCP register map
TFP501 is a standard I2C slave device. All the registers can be written and read through the I2C interface. The
I2C base address of TFP501 is dependent on pin 10 (A0) as shown below.
Pin 10
Write Address (Hex)
Read Address (Hex)
0
74
75
1
76
77
I2C register map
BKSV
Subaddress = 00
Read Only
7
6
5
4
3
2
1
0
BKSV[7:0]
Subaddress = 01
Read Only
7
6
5
4
3
2
1
0
BKSV[15:8]
Subaddress = 02
Read Only
7
6
5
4
3
2
1
0
BKSV[23:16]
Subaddress = 03
Read Only
7
6
5
4
3
2
1
0
BKSV[31:24]
Subaddress = 04
Read Only
7
6
5
4
3
2
1
0
BKSV[39:32]
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