DS21354/DS21554 3.3V/5V E1 Single-Chip Transceivers
ADDRESS
TYPE
REGISTER
NAME
B5
B6
B7
B8
B9
BA
BB
BC
BD
BE
BF
R/W
R/W
R/W
R/W
R/W
R/W
R/W
—
Interleave Bus Operation Register
Transmit HDLC Information Register
Transmit HDLC FIFO Register
Receive HDLC DS0 Control Register 1
Receive HDLC DS0 Control Register 2
Transmit HDLC DS0 Control Register 1
Transmit HDLC DS0 Control Register 2
Not used
IBO
THIR
THFR
RDC1
RDC2
TDC1
TDC2
(set to 00h)
(set to 00h)
(set to 00h)
(set to 00h)
—
Not used
—
Not used
—
Not used
Note 1:
Note 2:
Test Registers are used only by the factory. These registers must be cleared (set to all zeros) on power-up initialization to ensure
proper operation.
Register banks Cxh, Dxh, Exh, and Fxh are not accessible.
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