MIC2563A MICREL [Micrel Semiconductor], MIC2563A Datasheet - Page 10

• Manufacturer Part Number: MIC2563A
• Description: Dual Slot PCMCIA/CardBus Power Controller Preliminary Information
• Manufacturer: MICREL [Micrel Semiconductor]

MIC2563A
Figure 6. Interfacing the MIC2563A with a serial-output data controller. Pinouts shown are for the MIC2563A-1
and a three-wire serial controller.
Serial Control
Figure 6 shows conversion from a three-wire serial interface,
such as used by the Cirrus Logic CL-PD6730, to the standard
eight-line parallel interface used by the MIC2563A-1. This
interface requires three common, low cost 7400-series logic
ICs:
Either 3.3V or 5V logic devices may be used, depending upon
the control voltage employed by the slot logic controller. Pin
numbers in parenthesis refer to the MIC2563A-1BSM.
Gerber™ files for this P.C. board layout are available to Micrel
customers. Please contact Micrel directly.
Another serial-to-parallel solution for this application is the
74HC594, 8-bit shift register with output registers. This de-
vice contains the eight D flip-flops plus has latched outputs
suitable for this purpose.
• 74x574 Octal D Flip-Flop
• 74x175 Quad Flip-Flop with Latches (two needed)
SER_LATCH
SER_DATA
SER_CLK
RST#
2
3
4
5
6
7
8
9
11
74x574
D
D
D
D
D
D
D
D
V CC
20
Q
Q
Q
Q
Q
Q
Q
Q
19
18
17
16
15
14
13
12
10
1
2-56
Serial Control Adapter P.C. Board Layout
Component Key
U1 ............. MIC2563
U2, U3 ...... 74x175
U4 ............. 74x574
1 CLR
1 CLR
4
5
12
13
4
5
12
13
D
D
D
D
D
D
D
D
74x175
74x175
Q
Q
Q
Q
Q
Q
Q
Q
9 CLK
9 CLK
2
7
10
15
2
7
10
15
A_VPP_PGM (Pin 8)
A_VPP_VCC (Pin 7)
A_VCC5_EN (Pin 5)
A_VCC3_EN (Pin 6)
B_VPP_PGM (Pin 22)
B_VPP_VCC (Pin 21)
B_VCC3_EN (Pin 19)
B_VCC5_EN (Pin 20)
Micrel
1997