9 read register 15, Read register 15 – Zilog Z16C35 User Manual

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Figure 5–53. Read Register 13

5.5.9 Read Register 15

RR15 reflects the value stored in WR15, the External/Status IE bits. The two unused bits
are always returned as “0s”. Figure 5-25 shows the bits positions for RR15.

Figure 5–54. Read Register 15

Read Register 13

D5 D4 D3 D2 D1 D0

TC8

TC9

TC10

TC11

TC12

TC13

TC14

TC15

Upper
Byte of
Time
Constant

Read Register 15

D5 D4 D3 D2 D1 D0

Zero Count IE

DCD IE

Sync/Hunt IE

CTS IE

Tx Underrun/EOM IE

Break/Abort IE

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