DS2174 MAXIM [Maxim Integrated Products], DS2174 Datasheet - Page 10

• Manufacturer Part Number: DS2174
• Description: EBERT
• Manufacturer: MAXIM [Maxim Integrated Products]

2. PARALLEL CONTROL INTERFACE
Access to the registers is provided through a nonmultiplexed parallel port. The data bus is 8 bits wide; the
address bus is 4 bits wide. Control registers are accessed directly; memory for long repetitive patterns is
accessed indirectly. RCLK and TCLK are used to update counters and for all rising edge bits in the
register map (RSYNC, LC, TL, SBE). At slow clock rates, sufficient time must be allowed for these port
operations.
Table 2-1. REGISTER MAP
ADDRESS
0A
0C
0D
0B
0E
0F
00
01
02
03
04
05
06
07
08
09
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R
R
R
R
R
R
R
REGISTER NAME
Tap/Seed Register 0
Tap/Seed Register 1
Tap/Seed Register 2
Tap/Seed Register 3
Control Register 1
Control Register 2
Control Register 3
Control Register 4
Count Register 0
Count Register 1
Count Register 2
Count Register 3
Count Register 4
Count Register 5
Status Register
TEST Register
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DS2174