DS2790 Maxim Integrated Products, DS2790 Datasheet - Page 15

• Manufacturer Part Number: DS2790
• Description: Programmable 1-Cell Li-Ion Fuel Gauge and Protector
• Manufacturer: Maxim Integrated Products

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REGISTER SET
Most functions of the device are controlled by sets of registers. These registers provide a working space for
memory operations as well as configuring and addressing peripheral registers on the device. Registers are divided
into two major types: system registers and peripheral registers. The common register set, also known as the
system registers, includes the ALU, accumulator registers, data pointers, interrupt vectors and control, and stack
pointer. The peripheral registers define additional functionality that may be included by different products based on
the MAXQ20 architecture. This functionality is broken up into discrete modules so that only the features required
for a given product need to be included. Table 1 shows the DS2790 register set.
Table 1. System Register Map
Note: Names that appear in italics indicate that all bits of a register are read-only. Names that appear in bold indicate that a register is 16 bits
wide. Registers in module AP are bit addressable.
REGISTER
4
INDEX
0Ah
0Bh
0Ch
0Dh
0Eh
00h
01h
02h
03h
04h
05h
06h
07h
08h
09h
0Fh
AP (8h)
WDCN
CKCN
APC
PSF
IMR
SC
AP
IIR
—
—
IC
—
—
—
—
—
A (9h)
A[10]
A[11]
A[12]
A[13]
A[14]
A[15]
A[0]
A[1]
A[2]
A[3]
A[4]
A[5]
A[6]
A[7]
A[8]
A[9]
PFX (Bh)
PFX
MODULE NAME (BASE SPECIFIER)
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
DS2790 Programmable 1-Cell Li-Ion Fuel Gauge and Protector
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IP (Ch)
IP
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
SP (Dh)
LC0
LC1
SP
—
IV
—
—
—
—
—
—
—
—
—
—
—
DPC (Eh)
GRXL
GRH
DPC
GRL
GRS
Offs
GR
BP
FP
—
—
—
—
—
—
—
DP (Fh)
DP0
DP1
—
—
—
—
—
—
—
—
—
—
—
—
—
—