Datasheet
LM97593
www.ti.com
SNWS019B –JULY 2007–REVISED APRIL 2013
PIN DESCRIPTIONS AND EQUIVALENT CIRCUITS (continued)
Pin No. Symbol Equivalent Circuit Description
CHIP ENABLE. Active low
This control strobe enables the read or write operation. The contents of
60 CE Input the register selected by A[7:0] will be output on D[7:0] when RD is low
and CE is low. If WR is low and CE is low, then the selected register will
be loaded with the contents of D[7:0].
116 TDO Output TEST DATA OUT. Active high
117 TDI Input TEST DATA IN. Active high with pull-up
118 TMS Input TEST MODE SELECT. Active high with pull-up
119 TCK Input TEST CLOCK. Active high. Tie low if JTAG is not used.
TEST RESET. Active low with pull-up
121 TRST Input Asynchronous reset for TAP controller. Tie low or to MR if JTAG is not
used.
SCAN ENABLE. Active low with pull-up
122 SCAN_EN Input Enables access to internal scan registers. Tie high. Used for
manufacturing test only!
Digital Power Supplies
38, 39, 64,
79, 92, 102, V
DR
DDC Output Driver Power I/O Power Supply, 3.3V nominal. Quantity 8.
107, 128
1, 47, 61, 68,
83, 89, 98, DRGND DDC Output Driver Ground I/O Ground Return. Quantity 8.
110
49, 74, 85,
V
D18
DDC Core Power DSP Digital Core Power Supply, 1.8V nominal. Quantity 5.
115, 123
49, 74, 85,
V
D18
DDC Core Power DSP Digital Core Power Supply, 1.8V nominal. Quantity 5.
115, 123
44, 51, 65,
66, 76, 103, D18GND DDC Core Ground DSP Digital Core Ground Return. Quantity 7.
120
4, 6, 31, 34 V
D
ADC Digital Power ADC Digital Logic Power Supply, 3.3V nominal. Quantity 4.
5, 7, 32, 33 DGND ADC Digital Ground ADC Digital Logic Ground Return. Quantity 4.
Analog Power Supplies
10, 11, 19,
V
A
ADC Analog Power ADC Analog Power Supply, 3.3V nominal. Quantity 5.
25, 29
2, 9, 12, 18,
AGND ADC Analog Ground ADC Analog Ground Return. Quantity 6.
20, 28
Unconnected Pins
3, 35, 36, 67,
NC NC Not Connected. These pins should be left floating.
100, 101
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