STPCI01 STMicroelectronics, STPCI01 Datasheet - Page 34

• Manufacturer Part Number: STPCI01
• Description: STPC INDUSTRIAL - PC COMPATIBLE EMBEDED MICROPROC
• Manufacturer: STMicroelectronics

STRAP OPTION
3.1.5. STRAP REGISTER 4
Bits 5-0 of this register reflect the status of pins MD[53:48] respectively.
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Strap4
Bit Number Sampled
7
Bits 7-5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Rsv
6
This register defaults to the values sampled on MD[53:48] pins after reset
Mnemonic
MD52
MD51
MD50
MD49
MD48
Rsv
5
Issue 2.4 - February 11, 2002
Access = 0022h/0023h
Description
y.y V present on board. This bit reflects the value sampled on MD[52]
pin and is used to notify the Cardbus socket management unit if the y.y
V vcc voltage (where y.y is less than x.x) is present on board as follows
Setting to ’0’, y.y V Vcc voltage is not available.
Setting to ’1’: y.y V Vcc voltage is available.
x.x V present on board. This bit reflects the value sampled on MD[51]
pin and is used to notify the Cardbus socket management unit if the x.x
V vcc voltage (where x.x is less than 3.3) is present on board as follows:
Setting to ’0’, x.x V Vcc voltage is not available.
Setting to ’1’: x.x V Vcc voltage is available.
3.3 V present on board. This bit reflects the value sampled on MD[50]
pin and is used to notify the Cardbus socket management unit if the 3.3
V vcc voltage is present on board as follows:
Setting to ’0’, 3.3 V vcc voltage is not available.
Setting to ’1’, 3.3 V vcc voltage is available.
5 V present on board. This bit reflects the value sampled on MD[49]
pin and is used to notify the Cardbus socket management unit if the 5 V
vcc voltage is present on board as follows:
Setting to ’0’, 5 V vcc voltage is not available.
Setting to ’1’, 5 V vcc voltage is available.
This bit reflects the value sampled on MD[48] pin and is used to enable
the TFT controller outputs.
Reserved.
MD52
4
MD51
3
MD50
2
MD49
1
Regoffset = 03Dh
MD48
0