KX-NCP1104XJ (serv.man2) - Panasonic PBX Service Manual (repair manual). Page 43

43

258

5

C2

EROM#

I

Iu

External Boot ROM. Used to enable external Boot ROM.
Internal pull-up.

259

6

B20

IRAMBOOT#

I

Iu/Ot4

IRAM Boot. Used to select device configuration. Internal pull-
up. Leave open.

260

7

C22

PLLBYPASS#

I

Iu

PLL Bypass. Used for factory device test only. Internal pull-
up. Leave open.

261

8

Y21

BSCANMODE#

I

Iu

Boundary Scan Mode. Low input configures the JTAG port
for boundary scan. High input configures the JTAG port as a
debug port. Internal pull-up.
NOTE: For normal operation, BSCANMODE# must be high
(default state due to internal pull-up).

262

9

W21

BISR#

I

Iu

Built In Self Repair Enable. Used for factory device test only.
Internal pull-up. Leave open.

263

10

B2

FUSE

I

Iu

Fuse Usage Enable. Used for factory device test only. Inter-
nal pull-up. Leave open.

264

11

A22

TRISTATE#

I

Iu

Three-state All Outputs. Low input three-states all outputs.
High input enables normal output drive states. May be used
for board manufacturing test. Internal pull-up.

265

1

T4

Reserved

I

Iu/Ots8 Reserved. Internal pull-up. Leave open.

266

2

T2

Reserved

I

Iu/Ots8 Reserved. Internal pull-up. Leave open.

267

3

T3

Reserved

I

Iu/Ots8 Reserved. Internal pull-up. Leave open.

268

4

T1

Reserved

O

Iu/Ots8 Reserved. Output. Leave open.

Extra GPIO Mode

269

1

D21

Reserved

GPIO18

I

I/Ots8

General Purpose I/O. Connect to pull-up if not used.

270

2

D1

Reserved

Reserved

I/O

USB

Reserved. Connect to 15k

Ω pull-down to GND.

271

3

C1

Reserved

Reserved

I/O

USB

Reserved. Connect to 15k

Ω pull-down to GND.

272

4

D22

Reserved

GPIO19

I

I/Ots8

General Purpose I/O. Connect to pull-up if not used.

273

5

E3

Reserved

Reserved

I/O

USB

Reserved. Connect to 15k

Ω pull-down to GND.

274

6

D2

Reserved

Reserved

I/O

USB

Reserved. Connect to 15k

Ω pull-down to GND.

Total 

Signals

Interface 

Signals

Pin

SPI Bus & Extra GPIO Interface Signal 

Name

Signal 

Type

I/O Type

Signal Description

Pin Compatible 

Mode

Enhanced 

Feature Mode

Software 
Selected 
Features

275

1

Y1

Reserved

SPI_SCLK

SPI_SCLK

I/O

I/Ots8

Reserved:
SPI_SCLK: SPI Serial Clock Output

276

2

V4

Reserved

PCI_GNT4#

SPI_TXD

I/O

I/Ots8

Reserved.
PCI_GNT4#: Grant. GNT# is used to indicate to the
agent that access to the bus has been granted. Con-
nect to PCI Bus: GNT#.
SPI_TXD: SPI Transmit Data Output.

277

3

V2

Reserved

PCI_REQ4#

SPI_RXD

I/O

I/Ots8

Reserved.
PCI_REQ4#: Request. REQ# is used to indicate to the
arbiter that this agent desires use of the bus. Connect
to PCI Bus: REQ#.
SPI_RXD: SPI Receive Data Input

278

4

V3

Reserved

GPIO12

SPI_SS0#

I/O

I/Ots8

Reserved.
GPIO12: General Purpose I/O 12. Connect to pull-up
if not used.
SPI_SS0#: SPI Slave Select 0 Output can be used
directly as a Chip Select, or SS[3:0] can be decoded
to create 16 Chip Selects.

279

5

V1

Reserved

GPIO13

SPI_SS1#

I/O

I/Ots8

Reserved.
GPIO13: General Purpose I/O 13
Connect to pull-up if not used.
SPI_SS1#: SPI Slave Select 1 Output can be used
directly as a Chip Select, or SS[3:0] can be decoded
to create 16 Chip Selects.

Total 

Signals

Interface 

Signals

Pin

GPIO, JTAG, Configuration, PLL, and 

Test Interface Signal Name

Signal 

Type

I/O Type

Signal Description

Pin Compatible & 

Enhanced Feature 

Modes

Software Selected 

Features