Z89175 Zilog., Z89175 Datasheet - Page 33

• Manufacturer Part Number: Z89175
• Description: Voice Processing Controllers
• Manufacturer: Zilog.

Zilog
DS97TAD0100
Group 15 (F) Control Registers
The upper nibble of the register file address
provided by the register pointer specifies
the active working-register group
Group 14 (E)
Group 13 (D)
Group 4 (4)
Group 3 (3)
Group 2 (2)
Group 1 (1)
Group 0 (0)
r7 r6 r5 r4
Figure 20. Register Pointer
P R E L I M I N A R Y
I/O Ports
Specified Working
Register Group
r3 r2 r1 r0
R255
R253
R240
R15
R239
R223
R79
R63
R47
R31
R3
R0
The upper nibble
of the register
file address
provided by the
instruction points
to the specified
working-register
group
Voice Processing Controllers
Z89175/Z89176
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