ZL50022
Data Sheet
External Read/Write Address: 0001H
Reset Value: 0000H
15
0
14
0
13
0
12
0
11
0
10
0
9
0
8
7
6
5
4
3
2
1
0
STIO_
BDH
BDL
RBER
EN
TBER
EN
BPD
2
BPD
1
BPD
0
MBPS
PD_EN
Bit
Name
Description
Reserved. In normal functional mode, these bits MUST be set to zero.
15 - 9
8
Unused
STIO_PD_ STio Pull-down Enable
EN
When this bit is low, the pull-down resistors on all STio pads will be disabled.
When this bit is high, the pull-down resistors on all STio pads will be enabled.
7
BDH
Bi-directional Control for Streams 16-31
BDH
STio16 - 31 Operation
0
normal operation:
STi16-31 are inputs
STio16-31 are outputs
1
bi-directional operation:
STi16-31 tied low internally
STio16-31 are bi-directional
6
BDL
Bi-directional Control for Streams 0-15
BDL
STio0 - 15 Operation
0
normal operation:
STi0-15 are inputs
STio0-15 are outputs
1
bi-directional operation:
STi0-15 tied low internally
STio0-15 are bi-directional
5
4
RBEREN
TBEREN
BPD2 - 0
PRBS Receiver Enable
When this bit is low, all the BER receivers are disabled. To enable any BER receivers,
this bit MUST be high.
PRBS Transmitter Enable
When this bit is low, all the BER transmitters are disabled. To enable any BER
transmitters, this bit MUST be high.
3 - 1
Block Programming Data
These bits refer to the value to be loaded into the connection memory, whenever the
memory block programming feature is activated. After the MBPE bit in the Control
Register is set to high and the MBPS bit in this register is set to high, the contents of
the bits BPD2 - 0 are loaded into bits 2 - 0 of the Connection Memory Low. Bits 15 - 3
of the Connection Memory Low and bits 15 - 0 of Connection Memory High are
zeroed.
Table 18 - Internal Mode Selection Register (IMS) Bits
55
Zarlink Semiconductor Inc.
ZARLINK [ ZARLINK SEMICONDUCTOR INC ]
