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+40V power is supplied to internal port via an on-board relay.+40 V power is not supplied to external port by turning off the relay.
+15V power generates +5V and +3.3V by the CD/CD converter, and supplies this card's internal circuit power.Figure 2.16 illustrates
power supply system.

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Table.11 shows the I/O port map of SH7020 and Table.12 shows that of eSAMSON.

Table.11 I/O port map of SH7020

Pin

Terminals

I/O

ACT

Terminals Contents

68

nIRQ3

I

L

Reserve (interrupt)

67

nIRQ2

I

L

Interrupt by BRI-IC(PSB21150)

66

nIRQ1

I

L

Interrupt for SAMSON (ASIC) (mainly DPRAM communication
interrupt for MPR)

65

nIRQ0

I

L

DC power down recovery detection inversion signal of LPR
inversion signal (L:recovery)

64

PA11

O

L

UART port for request to send [RTS0] (RS232C)

62

PA10

I

L

UART port for clear to send [CTS0] (RS232C)

61

PA9

-

-

Reserve (general-purpose I/O)

60

nBREQ

I

L

Bus request signal (bus arbitration)

58

nBACK

O

L

Bus acknowledge signal (bus arbitration)

57

nRD

O

L

Read signal (bus control)

56

nLBS

O

L

Low byte strobe signal (bus control)

55

nWR

O

L

Write signal (bus control)

54

nWAIT

O

L

Wait signal (bus control)

53

nCS6

O

L

Chip select 6 signal (bus control)

52

PA1

-

-

Reserve (Chip Select 5 signal)

51

PA0

-

-

Reserve (Chip Select 4 signal)

100

nIRQ7

-

-

Reserve (interrupt)

99

nIRQ6

-

-

Reserve (interrupt)

98

nIRQ5

-

-

Reserve (interrupt)

97

nIRQ4

-

-

Reserve (interrupt)

96

PB11

-

-

Reserve (general-purpose I/O)

95

PB10

-

-

Reserve (general-purpose I/O)

94

TxD0

O

H/L

UART port to send data [TxD0] (RS232C)

93

RxD0

I

H/L

UART port to receive data [RxD0] (RS232C)

91

PB7

-

-

Reserve (general-purpose I/O)

90

PB6

-

-

Reserve (general-purpose I/O)

89

PB5

I

L

For production test

87

PB4

I

L

For card single debugging (L:Fdebug mode)

86

PB3

I

L

Frash memory busy input (L:Fbusy)

85

PB2

I

L

Reserve (general-purpose I/O)

84

PB1

I

L

Reserve (general-purpose I/O)

83

PB0

I

H

LPR halt signal (H: Halt)

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Table.12  I/O port map of eSAMSON

Pin

Terminals

I/O

ACT

Terminals Contents

149

PO[7]

I

H/L

Reserve (Jumper setup)

148

PO[6]

I

H/L

Reserve (Jumper setup)

147

PO[5]

I

H/L

Reserve (Jumper setup)

146

PO[4]

I

H/L

Hardware version control bit2 (Jumper setup)

145

PO[3]

I

H/L

Hardware version control bit1 (Jumper setup)

144

PO[2]

I

H/L

Hardware version control bit0 (Jumper setup)

143

PO[1]

I

H/L

Number of lines info bit1 (Jumper setup)

142

PO[0]

I

H/L

Number of lines info bit0 (Jumper setup)

158

P1[7]

O

L

Line status LED port 8 Link status (L:ON)

157

P1[6]

O

L

Line status LED port 7 Link status (L:ON)

156

P1[5]

O

L

Line status LED port 6 Link status (L:ON)

155

P1[4]

O

L

Line status LED port 5 Link status (L:ON)

154

P1[3]

O

L

Line status LED port 4 Link status (L:ON)

153

P1[2]

O

L

Line status LED port 3 Link status (L:ON)

152

P1[1]

O

L

Line status LED port 2 Link status (L:ON)

151

P1[0]

O

L

Line status LED port 1 Link status (L:ON)

168

P2[7]

O

H

Line reference lost signal output (H: Reference lost)

167

P2[6]

O

H/L

Line master clock select 2bit

166

P2[5]

O

H/L

Line master clock select 1bit

165

P2[4]

O

H/L

Line master clock select 0 bit

164

P2[3]

O

L

Card Operating State Display LED Green (L:ON)

163

P2[2]

O

L

Card Operating State Display LED  Red (L:ON)

162

P2[1]

-

-

Reserve

161

P2[0]

-

-

Reserve

177

P3[7]

O

H/L

BRI port #8 mode Switch (L:LT-T, H:LT-S)

176

P3[6]

O

H/L

BRI port #7 mode Switch (L:LT-T, H:LT-S)

175

P3[5]

O

H/L

BRI port #6 mode Switch (L:LT-T, H:LT-S)

174

P3[4]

O

H/L

BRI port #5 mode Switch (L:LT-T, H:LT-S)

173

P3[3]

O

H/L

BRI port #4 mode Switch (L:LT-T, H:LT-S)

172

P3[2]

O

H/L

BRI port #3 mode Switch (L:LT-T, H:LT-S)

171

P3[1]

O

H/L

BRI port #2 mode Switch (L:LT-T, H:LT-S)

170

P3[0]

O

H/L

BRI port #1 mode Switch (L:LT-T, H:LT-S)

199

P4[7]

O

H/L

BRI port #8 mode Power supply control (H:Power supplied,
L:None)

198

P4[6]

O

H/L

BRI port #7 mode Power supply control (H:Power supplied,
L:None)

197

P4[5]

O

H/L

BRI port #6 mode Power supply control (H:Power supplied,
L:None)

196

P4[4]

O

H/L

BRI port #5 mode Power supply control (H:Power supplied,
L:None)

195

P4[3]

O

H/L

BRI port #4 mode Power supply control(H:Power supplied,
L:None)